- inelastic_modelsThe material objects to use to calculate stress and inelastic strains. Note: specify creep models first and plasticity models second.
C++ Type:std::vector
Description:The material objects to use to calculate stress and inelastic strains. Note: specify creep models first and plasticity models second.
Compute Multiple Inelastic Stress
Compute state (stress and internal parameters such as plastic strains and internal parameters) using an iterative process. Combinations of creep models and plastic models may be used.
Description
ComputeMultipleInelasticStress computes the stress, the consistent tangent operator (or an approximation), and a decomposition of the strain into elastic and inelastic components for a series of different inelastic material models (e.g. creep and plasticity) which inherit from StressUpdateBase. By default finite strains are assumed. The elastic strain is calculated by subtracting the computed inelastic strain increment tensor from the mechanical strain increment tensor. (1) Mechanical strain, , is considered to be the sum of the elastic and inelastic (e.g. plastic and creep) strains.
note:Default Finite Strain Formulation
This class uses the finite incremental strain formulation as a default. Users may elect to use a small incremental strain formulation and set perform_finite_strain_rotations = false if the simulation will only ever use small strains. This class is not intended for use with a total small linearize strain formulation.
ComputeMultipleInelasticStress is designed to be used in conjunction with a separate model or set of models that computes the inelastic strain for a given stress state. These inelastic models must derive from the StressUpdateBase class. The Tensor Mechanics module contains a wide variety of such models, including
MultiParameterPlasticityStressUpdate
note:Compatible Inelastic
StressUpdate Material ModelsAll of the inelastic material models that are compatible with ComputeMultipleInelasicStress follow the nomenclature convention of StressUpdate as a suffix to the class name.
ComputeMultipleInelasticStress can accomodate as few as zero inelastic models (in which case the algorithm from ComputeFiniteStrainElasticStress is applied) to as many inelastic material models as is required by the physics. If more than one inelastic material model is supplied to ComputeMultipleInelasticStress, it is recommended that all of the inelastic models inherit from the same base class.
Multiple Inelastic Models
Figure 1: The ComputeMultipleInelasticStress algorithm for calculating the strains and stresses for multiple inelastic material models.
The algorithm used to compute the stress for multiple inelastic models is shown in Figure 1.
When multiple inelastic models are given, ComputeMultipleInelasticStress iterates over the specified inelastic models until the change in stress is within a user-specified tolerance.
Inner Iteration over Inelastic Models
The inner iteration over the multiple inelastic material models is shown in the green components in Figure 1.
When each inelastic model is evaluated, a trial stress is computed using the current elastic strain, which is the total mechanical strain minus the current summation of inelastic strain for all inelastic models. This trial stress can be expressed as (2) where is the elasticity tensor for the material.
The inelastic material model, represented by the blue element Figure 1, is then called. The inelastic material model calculates the inelastic strain increment necessary to produce an admissible stress, as a function of the trial stress. The total inelastic strain increment is updated for each model's contribution. The details of this calculation vary by model and can include the effects of plasticity or creep.
The elastic and inelastic strain increments, stress, and, optionally, the consistent tangent operator are returned to ComputeMultipleInelasticStress from the inelastic material model.
Outer Iteration over Stress Difference
After each inelastic model is called to compute an update to the stress tensor, the minimum and maximum values of each component of the stress tensor, over the course of those iterations, are stored to two tensors denoted as and , respectively. An norm of the difference of these two tensors is then computed as (3) The norm of the stress difference is compared to the absolute and relative tolerances to determine if the solution from the combined inelastic material models is converged (4) where is the norm from the very first outer iteration over all of the inelastic material models. The solution will not converge if the outer iteration loop, shown in the top half of Figure 1, exceeds the maximum number of iterations set by the user.
Finalize Strains and the Jacobian Multiplier
Once convergence on the stress is obtained, the calculation of the inelastic strains is finalized by by applying a weighting factor, as shown in Figure 1. This weighting factor has a default value of unity.
Jacobian Multiplier and the Consistent Tangent Operator
The Jacobian multiplier, which is used in the StressDivergenceTensors kernel to condition the Jacobian calculation, must be calculated from the combination of all the different inelastic material models. There are three options used to calculate the combined Jacobian multiplier: Elastic, Partial, and Nonlinear, which are set by the individual elastic material models. (5) where is the Jacobian multiplier, is the elasticity tensor, is the Rank-4 identity tensor, and is the consistent tangent operator.
The consistent tangent operator, defined in Eq. (6) provides the information on how the stress changes with respect to changes in the displacement variables. (6) where is an arbitrary change in the total strain (which occurs because the displacements are changed) and is the resulting change in the stress. In a purely elastic situation (the elasticity tensor), but the inelastic mapping of changes in the stress as a result of changes in the displacement variables is more complicated. In a plastic material model, the proposed values of displacements for the current time step where used to calculate a trial inadmissible stress, , Eq. (2), that was brought back to the yield surface through a radial return algorithm. A slight change in the proposed displacement variables will produce a slightly different trial stress and so on. Other inelastic material models follow a similar pattern.
The user can chose to force all of the inelastic material models to use the elasticity tensor as the consistent tangent operator by setting tangent_operator = elastic. This setting will reduce the computational load of the inelastic material models but may hamper the convergence of the simulation. By default, the inelastic material models are allowed to compute the consistent tangent operator implemented in each individual inelastic model with the tangent_operator = nonlinear option.
Material Time Step Size Limitations
Prior to calculating the final strain values, the algorithm checks the size of the current time step against any limitations on the size of the time step as optionally defined by the inelastic material models. As described in the Material Time Step Limiter section, the time step size involves a post processor to ensure that the current time step size is reasonable for each of the inelastic material models used in the simulation.
At the end of the algorithm, the final value of the elastic and inelastic strain tensors are calculated as shown in the last element of Figure 1.
Single Inelastic Model
ComputeMultipleInelasticStress can also be used to calculate the inelastic strain and the stress when only a single inelastic material model is provided.
Figure 2: The optimized algorithm for calculating the strains and stress in the case when only a single inelastic material model is specified.
The algorithm, shown in Figure 2, used for a single inelastic material model is an optimized version of the multiple materials algorithm. With no need to iterate over multiple inelastic models, both the inner and outer iterations from Figure 1 are removed from the algorithm in Figure 2.
The initial elastic strain increment guess is assumed to be the initial mechanical strain increment, and the trial stress for the single inelastic model is calculated from that elastic strain increment as in Eq. (2). These stress and strain values are passed directly to the inelastic material model.
The material model computes the admissible stress and strain states, as indicated by the blue element in Figure 2. An optional consistent tangent operator matrix is also returned by the inelastic material model. As in the multiple inelastic models algorithm, the user may force the use of the Elastic option by setting tangent_operator = elastic. By default, the inelastic material model is allowed to compute the consistent tangent operator implemented in each individual inelastic model with the tangent_operator = nonlinear option.
The consistent tangent operator is then used to find the Jacobian multiplier with (7) where is the Jacobian multiplier, is the elasticity tensor, is the Rank-4 identity tensor, and is the consistent tangent operator, as discussed in the multiple inelastic material models section.
The maximum size of the allowable time step is then optionally calculated by the inelastic material model, as described in the section below on the Material Time Step Limiter. At the conclusion of the algorithm, the value of the elastic and inelastic strain states are updated as shown in Figure 2.
Cycle Through One Inelastic Model per Time Step
ComputeMultipleInelasticStress also includes an option to run a series of inelastic models in a rotating fashion such that only a single inelastic model is run on a timestep. This option uses the same algorithm as in Figure 2 to determine the strains and stress value based on the rotated single inelastic model. A separate method is then employed to propagate the strain and stress values to the other inelastic material models for storage as old material property values.
Other Calculations Performed by StressUpdate Materials
The ComputeMultipleInelasticStress material relies on two helper calculations to aid the simulation in converging. These helper computations are defined within the specific inelastic models, and only a brief overview is given here. These methods are represented within the blue inelastic material model boxes in Figure 1 and Figure 2. For specific details of the implementations, see the documentation pages for the individual inelastic StressUpdate materials.
The first helper computation, the consistent tangent operator, is an optional feature which is implemented for only certain inelastic stress material models, and the material time step limiter is implemented in the models which use the Radial Return Stress Update algorithm.
Consistent Tangent Operator
The consistent tangent operator is used to improve the convergence of mechanics problems (see a reference such as Simo and Taylor (1985) for an introduction to consistent tangent operators). The Jacobian matrix, Eq. (5) and Eq. (7), is used to capture how the change in the residual calculation changes with respect to changes in the displacement variables. To calculate the Jacobian, MOOSE relies on knowing how the stress changes with respect to changes in the displacement variables.
Because the change of the stress with respect to the change in displacements is material specific, the value of the consistent tangent operator is computed in each inelastic material model. By default the consistent tangent operator is set equal to the elasticity tensor (the option Elastic in Eq. (5) and Eq. (7)). Inelastic material models which use either the Partial or Nonlinear options in Eq. (5) or Eq. (7) define a material specific consistent tangent operator.
Generally Partial consistent tangent operators should be implemented for non-yielding materials (e.g. volumetric swelling) and Full consistent tangent operators should be implemented for yielding material models (e.g. plasticity).
Include Damage Model Optionally, the effect of damage on the stress calculation can be included in the model. Another material that defines the evolution of damage should be coupled using parameter damage_model. Here, first the inelastic strains and corresponding effective stresses are calculated based on the undamaged properties. Afterwards, the damage index is applied on the effective stress to calculate the damaged stress. This captures the effect of damage in a material undergoing creep or plastic deformation.
Material Time Step Limiter
In some cases, particularly in creep, limits on the time step are required by the material model formulation. Each inelastic material model is responsible for calculating the maximum time step allowable for that material model. The MaterialTimeStepPostprocessor finds the minimum time step size limits from the entire simulation domain. The postprocessor then interfaces with the IterationAdaptiveDT to restrict the time step size based on the limit calculated in the previous time step. When the damage model is included, the timestep is limited by the minimum timestep between the inelastic models and the damage model.
Example Input Files
The input settings for multiple inelastic material models and a single inelastic model are similar, and examples of both are shown below.
Multiple Inelastic Models
For multiple inelastic models, all of the inelastic material model names must be listed as arguments to the inelastic_models parameter. The inelastic material blocks must also be present.
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
youngs_modulus = 1e3
poissons_ratio = 0.3
[../]
[./creep_plas]
type = ComputeMultipleInelasticStress
block = 0
tangent_operator = elastic
inelastic_models = 'creep plas'
max_iterations = 50
absolute_tolerance = 1e-05
combined_inelastic_strain_weights = '0.0 1.0'
[../]
[./creep]
type = PowerLawCreepStressUpdate
block = 0
coefficient = 0.5e-7
n_exponent = 5
m_exponent = -0.5
activation_energy = 0
[../]
[./plas]
type = IsotropicPlasticityStressUpdate
block = 0
hardening_constant = 100
yield_stress = 20
[../]
[]
/opt/civet/build_0/moose/modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_creep_plasticity.i
#
# This test is Example 2 from "A Consistent Formulation for the Integration
# of Combined Plasticity and Creep" by P. Duxbury, et al., Int J Numerical
# Methods in Engineering, Vol. 37, pp. 1277-1295, 1994.
#
# The problem is a one-dimensional bar which is loaded from yield to a value of twice
# the initial yield stress and then unloaded to return to the original stress. The
# bar must harden to the required yield stress during the load ramp, with no
# further yielding during unloading. The initial yield stress (sigma_0) is prescribed
# as 20 with a plastic strain hardening of 100. The mesh is a 1x1x1 cube with symmetry
# boundary conditions on three planes to provide a uniaxial stress field.
#
# In the PowerLawCreep model, the creep strain rate is defined by:
#
# edot = A(sigma)**n * exp(-Q/(RT)) * t**m
#
# The creep law specified in the paper, however, defines the creep strain rate as:
#
# edot = Ao * mo * (sigma)**n * t**(mo-1)
# with the creep parameters given by
# Ao = 1e-7
# mo = 0.5
# n = 5
#
# thus, input parameters for the test were specified as:
# A = Ao * mo = 1e-7 * 0.5 = 0.5e-7
# m = mo-1 = -0.5
# n = 5
# Q = 0
#
# The variation of load P with time is:
# P = 20 + 20t 0 < t < 1
# P = 40 - 40(t-1) 1 < t 1.5
#
# The analytic solution for total strain during the loading period 0 < t < 1 is:
#
# e_tot = (sigma_0 + 20*t)/E + 0.2*t + A * t**0.5 * sigma_0**n * [ 1 + (5/3)*t +
# + 2*t**2 + (10/7)*t**3 + (5/9)**t**4 + (1/11)*t**5 ]
#
# and during the unloading period 1 < t < 1.5:
#
# e_tot = (sigma_1 - 40*(t-1))/E + 0.2 + (4672/693) * A * sigma_0**n +
# A * sigma_0**n * [ t**0.5 * ( 32 - (80/3)*t + 16*t**2 - (40/7)*t**3
# + (10/9)*t**4 - (1/11)*t**5 ) - (11531/693) ]
#
# where sigma_1 is the stress at time t = 1.
#
# Assuming a Young's modulus (E) of 1000 and using the parameters defined above:
#
# e_tot(1) = 2.39734
# e_tot(1.5) = 3.16813
#
#
# The numerically computed solution is:
#
# e_tot(1) = 2.39718 (~0.006% error)
# e_tot(1.5) = 3.15555 (~0.40% error)
#
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy elastic_strain_yy creep_strain_yy plastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = ' 0 1 1.5'
y = '-20 -40 -20'
[../]
[./dts]
type = PiecewiseLinear
x = '0 0.5 1.0 1.5'
y = '0.015 0.015 0.005 0.005'
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = 1
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
youngs_modulus = 1e3
poissons_ratio = 0.3
[../]
[./creep_plas]
type = ComputeMultipleInelasticStress
block = 0
tangent_operator = elastic
inelastic_models = 'creep plas'
max_iterations = 50
absolute_tolerance = 1e-05
combined_inelastic_strain_weights = '0.0 1.0'
[../]
[./creep]
type = PowerLawCreepStressUpdate
block = 0
coefficient = 0.5e-7
n_exponent = 5
m_exponent = -0.5
activation_energy = 0
[../]
[./plas]
type = IsotropicPlasticityStressUpdate
block = 0
hardening_constant = 100
yield_stress = 20
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 6
nl_rel_tol = 1e-6
nl_abs_tol = 1e-10
l_tol = 1e-5
start_time = 0.0
end_time = 1.5
[./TimeStepper]
type = FunctionDT
function = dts
[../]
[]
[Outputs]
exodus = true
[]
Single Inelastic Model
For a single inelastic material model the input syntax is simply condensed
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = 1
[../]
/opt/civet/build_0/moose/modules/tensor_mechanics/test/tests/material_limit_time_step/elas_plas/nafems_nl1_lim.i
#
# Tests material model IsotropicPlasticity with material based time stepper
# Boundary conditions from NAFEMS test NL1
#
[GlobalParams]
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]#Comment
file = one_elem2.e
[] # Mesh
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[] # Variables
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_eff]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[] # AuxVariables
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
execute_on = timestep_end
[../]
[./elastic_strain_yy]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
[../]
[./plastic_strain_eff]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_eff
[../]
[./tot_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_yy
index_i = 1
index_j = 1
[../]
[] # AuxKernels
[Functions]
[./appl_dispx]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
y = '0.0 0.25e-4 0.50e-4 0.50e-4 0.50e-4 0.25e-4 0.0 0.0 0.0'
[../]
[./appl_dispy]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
y = '0.0 0.0 0.0 0.25e-4 0.50e-4 0.50e-4 0.50e-4 0.25e-4 0.0 '
[../]
[]
[BCs]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 101
value = 0.0
[../]
[./origin_x]
type = DirichletBC
variable = disp_x
boundary = 103
value = 0.0
[../]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 102
value = 0.0
[../]
[./origin_y]
type = DirichletBC
variable = disp_y
boundary = 103
value = 0.0
[../]
[./top_y]
type = FunctionDirichletBC
variable = disp_y
boundary = 1
function = appl_dispy
[../]
[./right_x]
type = FunctionDirichletBC
variable = disp_x
boundary = 2
function = appl_dispx
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 250e9
poissons_ratio = 0.25
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = 1
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 5e6
hardening_constant = 0.0
relative_tolerance = 1e-20
absolute_tolerance = 1e-8
max_inelastic_increment = 0.000001
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-4
l_max_its = 100
nl_max_its = 20
[./TimeStepper]
type = IterationAdaptiveDT
dt = 0.1
time_t = '1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
time_dt = '0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1'
optimal_iterations = 30
iteration_window = 9
growth_factor = 2.0
cutback_factor = 0.5
timestep_limiting_postprocessor = matl_ts_min
[../]
start_time = 0.0
num_steps = 1000
end_time = 8.0
[] # Executioner
[Postprocessors]
[./matl_ts_min]
type = MaterialTimeStepPostprocessor
[../]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./stress_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./el_strain_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./plas_strain_eff]
type = ElementAverageValue
variable = plastic_strain_eff
[../]
[./tot_strain_yy]
type = ElementAverageValue
variable = tot_strain_yy
[../]
[./disp_x1]
type = NodalVariableValue
nodeid = 0
variable = disp_x
[../]
[./disp_x4]
type = NodalVariableValue
nodeid = 3
variable = disp_x
[../]
[./disp_y1]
type = NodalVariableValue
nodeid = 0
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
csv = true
[./console]
type = Console
output_linear = true
[../]
[] # Outputs
and only a single inelastic material model is included in the input. This example includes the max_inelastic_increment parameter which is used to limit the time step size.
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 5e6
hardening_constant = 0.0
relative_tolerance = 1e-20
absolute_tolerance = 1e-8
max_inelastic_increment = 0.000001
[../]
/opt/civet/build_0/moose/modules/tensor_mechanics/test/tests/material_limit_time_step/elas_plas/nafems_nl1_lim.i
#
# Tests material model IsotropicPlasticity with material based time stepper
# Boundary conditions from NAFEMS test NL1
#
[GlobalParams]
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]#Comment
file = one_elem2.e
[] # Mesh
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[] # Variables
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_eff]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[] # AuxVariables
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
execute_on = timestep_end
[../]
[./elastic_strain_yy]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
[../]
[./plastic_strain_eff]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_eff
[../]
[./tot_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_yy
index_i = 1
index_j = 1
[../]
[] # AuxKernels
[Functions]
[./appl_dispx]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
y = '0.0 0.25e-4 0.50e-4 0.50e-4 0.50e-4 0.25e-4 0.0 0.0 0.0'
[../]
[./appl_dispy]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
y = '0.0 0.0 0.0 0.25e-4 0.50e-4 0.50e-4 0.50e-4 0.25e-4 0.0 '
[../]
[]
[BCs]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 101
value = 0.0
[../]
[./origin_x]
type = DirichletBC
variable = disp_x
boundary = 103
value = 0.0
[../]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 102
value = 0.0
[../]
[./origin_y]
type = DirichletBC
variable = disp_y
boundary = 103
value = 0.0
[../]
[./top_y]
type = FunctionDirichletBC
variable = disp_y
boundary = 1
function = appl_dispy
[../]
[./right_x]
type = FunctionDirichletBC
variable = disp_x
boundary = 2
function = appl_dispx
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 250e9
poissons_ratio = 0.25
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = 1
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 5e6
hardening_constant = 0.0
relative_tolerance = 1e-20
absolute_tolerance = 1e-8
max_inelastic_increment = 0.000001
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-4
l_max_its = 100
nl_max_its = 20
[./TimeStepper]
type = IterationAdaptiveDT
dt = 0.1
time_t = '1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
time_dt = '0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1'
optimal_iterations = 30
iteration_window = 9
growth_factor = 2.0
cutback_factor = 0.5
timestep_limiting_postprocessor = matl_ts_min
[../]
start_time = 0.0
num_steps = 1000
end_time = 8.0
[] # Executioner
[Postprocessors]
[./matl_ts_min]
type = MaterialTimeStepPostprocessor
[../]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./stress_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./el_strain_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./plas_strain_eff]
type = ElementAverageValue
variable = plastic_strain_eff
[../]
[./tot_strain_yy]
type = ElementAverageValue
variable = tot_strain_yy
[../]
[./disp_x1]
type = NodalVariableValue
nodeid = 0
variable = disp_x
[../]
[./disp_x4]
type = NodalVariableValue
nodeid = 3
variable = disp_x
[../]
[./disp_y1]
type = NodalVariableValue
nodeid = 0
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
csv = true
[./console]
type = Console
output_linear = true
[../]
[] # Outputs
Input Parameters
- absolute_tolerance1e-05Absolute convergence tolerance for the stress update iterations over the stress change after all update materials are called
Default:1e-05
C++ Type:double
Options:
Description:Absolute convergence tolerance for the stress update iterations over the stress change after all update materials are called
- base_nameOptional parameter that allows the user to define multiple mechanics material systems on the same block, i.e. for multiple phases
C++ Type:std::string
Options:
Description:Optional parameter that allows the user to define multiple mechanics material systems on the same block, i.e. for multiple phases
- blockThe list of block ids (SubdomainID) that this object will be applied
C++ Type:std::vector
Options:
Description:The list of block ids (SubdomainID) that this object will be applied
- boundaryThe list of boundary IDs from the mesh where this boundary condition applies
C++ Type:std::vector
Options:
Description:The list of boundary IDs from the mesh where this boundary condition applies
- combined_inelastic_strain_weightsThe combined_inelastic_strain Material Property is a weighted sum of the model inelastic strains. This parameter is a vector of weights, of the same length as inelastic_models. Default = '1 1 ... 1'. This parameter is set to 1 if the number of models = 1
C++ Type:std::vector
Options:
Description:The combined_inelastic_strain Material Property is a weighted sum of the model inelastic strains. This parameter is a vector of weights, of the same length as inelastic_models. Default = '1 1 ... 1'. This parameter is set to 1 if the number of models = 1
- computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
Default:True
C++ Type:bool
Options:
Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
- constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
Default:NONE
C++ Type:MooseEnum
Options:NONE ELEMENT SUBDOMAIN
Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
- cycle_modelsFalseAt timestep N use only inelastic model N % num_models.
Default:False
C++ Type:bool
Options:
Description:At timestep N use only inelastic model N % num_models.
- damage_modelName of the damage model
C++ Type:MaterialName
Options:
Description:Name of the damage model
- internal_solve_full_iteration_historyFalseSet to true to output stress update iteration information over the stress change
Default:False
C++ Type:bool
Options:
Description:Set to true to output stress update iteration information over the stress change
- max_iterations30Maximum number of the stress update iterations over the stress change after all update materials are called
Default:30
C++ Type:unsigned int
Options:
Description:Maximum number of the stress update iterations over the stress change after all update materials are called
- perform_finite_strain_rotationsTrueTensors are correctly rotated in finite-strain simulations. For optimal performance you can set this to 'false' if you are only ever using small strains
Default:True
C++ Type:bool
Options:
Description:Tensors are correctly rotated in finite-strain simulations. For optimal performance you can set this to 'false' if you are only ever using small strains
- relative_tolerance1e-05Relative convergence tolerance for the stress update iterations over the stress change after all update materials are called
Default:1e-05
C++ Type:double
Options:
Description:Relative convergence tolerance for the stress update iterations over the stress change after all update materials are called
- tangent_operatornonlinearType of tangent operator to return. 'elastic': return the elasticity tensor. 'nonlinear': return the full, general consistent tangent operator.
Default:nonlinear
C++ Type:MooseEnum
Options:elastic nonlinear
Description:Type of tangent operator to return. 'elastic': return the elasticity tensor. 'nonlinear': return the full, general consistent tangent operator.
Optional Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
Description:Set the enabled status of the MooseObject.
- implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Options:
Description:Determines whether this object is calculated using an implicit or explicit form
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Options:
Description:The seed for the master random number generator
Advanced Parameters
- output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector
Options:
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
- outputsnone Vector of output names were you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector
Options:
Description:Vector of output names were you would like to restrict the output of variables(s) associated with this object
Outputs Parameters
Input Files
- modules/tensor_mechanics/test/tests/recompute_radial_return/isotropic_plasticity_finite_strain.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random1.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_native.i
- modules/tensor_mechanics/test/tests/tensile/small_deform8_update_version.i
- modules/combined/test/tests/inelastic_strain/elas_plas/elas_plas_nl1_cycle.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update6.i
- modules/tensor_mechanics/test/tests/jacobian/cwp02.i
- modules/tensor_mechanics/test/tests/jacobian/cto27.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update2.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random4.i
- modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_stress_prescribed.i
- modules/tensor_mechanics/test/tests/notched_plastic_block/biaxial_smooth.i
- modules/combined/test/tests/solid_mechanics/LinearStrainHardening/LinearStrainHardeningRestart2.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update1.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform21.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform11.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform25.i
- modules/combined/test/tests/inelastic_strain/elas_plas/elas_plas_nl1.i
- modules/porous_flow/test/tests/plastic_heating/compressive01.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update15.i
- modules/tensor_mechanics/test/tests/visco/gen_maxwell_relax.i
- modules/tensor_mechanics/test/tests/jacobian/cwp07.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update5.i
- modules/combined/test/tests/combined_plasticity_temperature/plasticity_temperature_dep_yield.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform6.i
- modules/tensor_mechanics/test/tests/material_limit_time_step/elas_plas/nafems_nl1_lim.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform8.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform9.i
- modules/tensor_mechanics/test/tests/tensile/small_deform9_update_version.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update3.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update8.i
- modules/combined/test/tests/solid_mechanics/LinearStrainHardening/lsh_pressure.i
- modules/tensor_mechanics/test/tests/jacobian/cwp08.i
- modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_creep_plasticity_start_time.i
- modules/combined/test/tests/solid_mechanics/LinearStrainHardening/LinearStrainHardeningRestart1.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform_inclined3.i
- modules/tensor_mechanics/test/tests/material_limit_time_step/creep/nafems_test5a_lim.i
- modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_stress_relaxation.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update8.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform24.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update3.i
- modules/tensor_mechanics/test/tests/recompute_radial_return/isotropic_plasticity_errors.i
- modules/combined/test/tests/inelastic_strain/creep/creep_nl1.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update6.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update2.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update16.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform2.i
- modules/tensor_mechanics/test/tests/recompute_radial_return/affine_plasticity.i
- modules/tensor_mechanics/test/tests/notched_plastic_block/cmc_smooth.i
- modules/tensor_mechanics/test/tests/tensile/small_deform1_update_version.i
- modules/tensor_mechanics/test/tests/visco/gen_maxwell_driving.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform7.i
- modules/tensor_mechanics/test/tests/jacobian/cwp05.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform13.i
- modules/tensor_mechanics/test/tests/multiple_two_parameter_plasticity/dp_and_wp.i
- modules/porous_flow/test/tests/plastic_heating/tensile01.i
- modules/combined/test/tests/power_law_creep/power_law_creep_restart2.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform_inclined2.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_lode_zero.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update34.i
- modules/tensor_mechanics/test/tests/recompute_radial_return/uniaxial_viscoplasticity_incrementalstrain.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform1.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update33.i
- modules/tensor_mechanics/test/tests/jacobian/phe01.i
- modules/tensor_mechanics/test/tests/scalar_material_damage/scalar_material_damage_creep.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform18.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_native.i
- modules/porous_flow/test/tests/dirackernels/injection_with_plasticity.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_outer_tip.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform3.i
- modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_creep_plasticity.i
- modules/tensor_mechanics/test/tests/multiple_two_parameter_plasticity/dp_then_wp.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform6.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update24.i
- modules/tensor_mechanics/test/tests/jacobian/cto25.i
- modules/combined/test/tests/power_law_creep/power_law_creep.i
- modules/tensor_mechanics/test/tests/jacobian/cwp03.i
- modules/tensor_mechanics/test/tests/tensile/small_deform6_update_version.i
- modules/tensor_mechanics/test/tests/tensile/random_update.i
- modules/combined/test/tests/power_law_hardening/PowerLawHardening.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform3.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform5.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/random.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update23.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/except6.i
- modules/tensor_mechanics/test/tests/tensile/small_deform_hard3_update_version.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random3.i
- modules/porous_flow/test/tests/jacobian/phe01.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update17.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update11.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform9.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform_inclined5.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update4.i
- modules/tensor_mechanics/test/tests/tensile/small_deform3_update_version.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/pull_push.i
- modules/tensor_mechanics/test/tests/visco/gen_kv_driving.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform17.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_outer_tip.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/pull_and_shear.i
- modules/tensor_mechanics/test/tests/multiple_two_parameter_plasticity/cycled_dp_then_wp.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform2.i
- modules/tensor_mechanics/test/tests/jacobian/cto26.i
- modules/tensor_mechanics/test/tests/jacobian/cwp04.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/throw_test.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/pull_and_shear_1step.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random5.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/beam.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/except1.i
- modules/tensor_mechanics/test/tests/jacobian/cwp01.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/except3.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_inner_tip.i
- modules/tensor_mechanics/test/tests/visco/visco_finite_strain.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update7.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_lode_zero.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform19.i
- modules/combined/test/tests/phase_field_fracture/crack2d_computeCrackedStress_finitestrain_plastic.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/except5.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform12.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update22.i
- modules/combined/test/tests/solid_mechanics/LinearStrainHardening/LinearStrainHardening_test.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update14.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update12.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform10.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard13.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_inner_tip.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard3.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update4.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform7.i
- modules/tensor_mechanics/test/tests/visco/gen_kv_creep.i
- modules/tensor_mechanics/test/tests/jacobian/cwp11.i
- modules/combined/test/tests/exception/nonad.i
- modules/tensor_mechanics/test/tests/jacobian/cto24.i
- modules/tensor_mechanics/test/tests/jacobian/cwp09.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform16.i
- modules/tensor_mechanics/test/tests/strain_energy_density/incr_model_elas_plas.i
- modules/tensor_mechanics/test/tests/recompute_radial_return/isotropic_plasticity_incremental_strain.i
- modules/tensor_mechanics/test/tests/jacobian/cwp06.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update13.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_inner_edge.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update5.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform22.i
- modules/tensor_mechanics/test/tests/tensile/small_deform2_update_version.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard22.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/push_and_shear.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform1.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform4.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard21.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update18.i
- modules/tensor_mechanics/test/tests/jacobian/tensile_update7.i
- modules/combined/test/tests/power_law_creep/power_law_creep_smallstrain.i
- modules/combined/test/tests/power_law_creep/power_law_creep_restart1.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform15.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform23.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/except4.i
- modules/tensor_mechanics/test/tests/jacobian/cto28.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update1.i
- modules/tensor_mechanics/test/tests/visco/burgers_creep.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/pull_push_h.i
- modules/tensor_mechanics/test/tests/temperature_dependent_hardening/temp_dep_hardening.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/except2.i
- modules/tensor_mechanics/test/tests/jacobian/mc_update21.i
- modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_inner_edge.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform11.i
- modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random2.i
- modules/tensor_mechanics/test/tests/material_limit_time_step/mult_inelastic/no_inelastic_model_timestep_limit.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform5.i
- modules/tensor_mechanics/test/tests/tensile/small_deform5_update_version.i
- modules/tensor_mechanics/test/tests/jacobian/cwp10.i
- modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform8.i
- modules/porous_flow/test/tests/plastic_heating/shear01.i
- modules/tensor_mechanics/test/tests/creep_tangent_operator/creep.i
modules/tensor_mechanics/test/tests/recompute_radial_return/isotropic_plasticity_finite_strain.i
# This simulation uses the piece-wise linear strain hardening model
# with the incremental small strain formulation; incremental small strain
# is required to produce the strain_increment for the DiscreteRadialReturnStressIncrement
# class, which handles the calculation of the stress increment to return
# to the yield surface in a J2 (isotropic) plasticity problem.
#
# This test assumes a Poissons ratio of 0.3 and applies a displacement loading
# condition on the top in the y direction.
#
# An identical problem was run in Abaqus on a similar 1 element mesh and was used
# to verify the SolidMechanics solution; this TensorMechanics code matches the
# SolidMechanics solution.
#
# Mechanical strain is the sum of the elastic and plastic strains but is different
# from total strain in cases with eigen strains, e.g. thermal strain.
[Mesh]
file = 1x1x1cube.e
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t*(0.0625)
[../]
[./hf]
type = PiecewiseLinear
x = '0 0.001 0.003 0.023'
y = '50 52 54 56'
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
add_variables = true
generate_output = 'stress_yy plastic_strain_xx plastic_strain_yy plastic_strain_zz'
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = 5
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = 4
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = 3
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = 2
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2.1e5
poissons_ratio = 0.3
[../]
[./isotropic_plasticity]
type = IsotropicPlasticityStressUpdate
yield_stress = 50.0
hardening_function = hf
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'isotropic_plasticity'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 50
nl_max_its = 50
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
end_time = 0.075
dt = 0.00125
dtmin = 0.0001
[]
[Outputs]
[./out]
type = Exodus
elemental_as_nodal = true
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random1.i
# Using CappedMohrCoulomb with tensile failure only
# Plasticity models:
# Tensile strength = 1MPa
#
# Lame lambda = 1GPa. Lame mu = 1.3GPa
#
# A line of elements is perturbed randomly, and return to the yield surface at each quadpoint is checked
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1000
ny = 1234
nz = 1
xmin = 0
xmax = 1000
ymin = 0
ymax = 1234
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./int0]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./int0]
type = MaterialStdVectorAux
property = plastic_internal_parameter
factor = 1E6
index = 0
variable = int0
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[]
[Postprocessors]
[./tot_iters]
type = ElementIntegralMaterialProperty
mat_prop = plastic_NR_iterations
outputs = console
[../]
[./raw_f0]
type = ElementExtremeValue
variable = f0
outputs = console
[../]
[./raw_f1]
type = ElementExtremeValue
variable = f1
outputs = console
[../]
[./raw_f2]
type = ElementExtremeValue
variable = f2
outputs = console
[../]
[./iter]
type = ElementExtremeValue
variable = iter
outputs = console
[../]
[./f0]
type = FunctionValuePostprocessor
function = should_be_zero0_fcn
[../]
[./f1]
type = FunctionValuePostprocessor
function = should_be_zero1_fcn
[../]
[./f2]
type = FunctionValuePostprocessor
function = should_be_zero2_fcn
[../]
[]
[Functions]
[./should_be_zero0_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f0'
[../]
[./should_be_zero1_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f1'
[../]
[./should_be_zero2_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f2'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1E6
value_residual = 0
internal_limit = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '1E9 1.3E9'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 1E5
max_NR_iterations = 100
yield_function_tol = 1.0E-1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = random1
csv = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_native.i
# apply repeated stretches in x z directions, and smaller stretches along the y direction,
# so that sigma_I = sigma_II,
# which means that lode angle = 30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-1.35E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = native
yield_function_tolerance = 1 # irrelevant here
internal_constraint_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 8
smoothing_tol = 1E-7
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3_native
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/tensile/small_deform8_update_version.i
# A single unit element is stretched by 1E-6m in z direction.
# with Lame lambda = 0.6E6 and Lame mu (shear) = 1E6
# stress_zz = 2.6 Pa
# stress_xx = 0.6 Pa
# stress_yy = 0.6 Pa
# tensile_strength is set to 0.5Pa
#
# stress_zz = 0.5
# plastic multiplier = 2.1/2.6 E-6
# stress_xx = 0.6 - (2.1/2.6*0.6) = 0.115
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1.0E-6*z'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = f0
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = f1
[../]
[./f2]
type = PointValue
point = '0 0 0'
variable = f2
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.6E6 1E6'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform8_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/combined/test/tests/inelastic_strain/elas_plas/elas_plas_nl1_cycle.i
#
# Test for effective strain calculation.
# Boundary conditions from NAFEMS test NL1
#
#
# This is not a verification test. The boundary conditions are applied such
# that the first step generates only elastic stresses. The rest of the load
# steps generate cycles of tension and compression in the axial (i.e., y-axis)
# direction. The axial stresses and strains also cycle, however the effective
# plastic strain increases in value throughout the analysis.
#
[GlobalParams]
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]
file = one_elem2.e
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./pressure]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./eff_plastic_strain]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
execute_on = timestep_end
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
execute_on = timestep_end
[../]
[./pressure]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = pressure
scalar_type = Hydrostatic
execute_on = timestep_end
[../]
[./elastic_strain_xx]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./elastic_strain_yy]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./elastic_strain_zz]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./tot_strain_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./tot_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./tot_strain_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./eff_plastic_strain]
type = MaterialRealAux
property = effective_plastic_strain
variable = eff_plastic_strain
[../]
[]
[Functions]
[./appl_dispy]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0'
y = '0.0 0.208e-4 0.50e-4 1.00e-4 0.784e-4 0.50e-4 0.0 0.216e-4 0.5e-4 1.0e-4 0.785e-4 0.50e-4 0.0'
[../]
[]
[BCs]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 101
value = 0.0
[../]
[./origin_x]
type = DirichletBC
variable = disp_x
boundary = 103
value = 0.0
[../]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 102
value = 0.0
[../]
[./origin_y]
type = DirichletBC
variable = disp_y
boundary = 103
value = 0.0
[../]
[./top_y]
type = FunctionDirichletBC
variable = disp_y
boundary = 1
function = appl_dispy
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 250e9
poissons_ratio = 0.25
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = 1
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 5e6
hardening_constant = 0.0
relative_tolerance = 1e-20
absolute_tolerance = 1e-8
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-4
l_max_its = 100
nl_max_its = 20
dt = 1.0
start_time = 0.0
num_steps = 100
end_time = 12.0
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./stress_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./stress_xy]
type = ElementAverageValue
variable = stress_xy
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./pressure]
type = ElementAverageValue
variable = pressure
[../]
[./el_strain_xx]
type = ElementAverageValue
variable = elastic_strain_xx
[../]
[./el_strain_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./el_strain_zz]
type = ElementAverageValue
variable = elastic_strain_zz
[../]
[./pl_strain_xx]
type = ElementAverageValue
variable = plastic_strain_xx
[../]
[./pl_strain_yy]
type = ElementAverageValue
variable = plastic_strain_yy
[../]
[./pl_strain_zz]
type = ElementAverageValue
variable = plastic_strain_zz
[../]
[./eff_plastic_strain]
type = ElementAverageValue
variable = eff_plastic_strain
[../]
[./tot_strain_xx]
type = ElementAverageValue
variable = tot_strain_xx
[../]
[./tot_strain_yy]
type = ElementAverageValue
variable = tot_strain_yy
[../]
[./tot_strain_zz]
type = ElementAverageValue
variable = tot_strain_zz
[../]
[./disp_x1]
type = NodalVariableValue
nodeid = 0
variable = disp_x
[../]
[./disp_x4]
type = NodalVariableValue
nodeid = 3
variable = disp_x
[../]
[./disp_y1]
type = NodalVariableValue
nodeid = 0
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
csv = true
[./console]
type = Console
output_linear = true
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update6.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to the plane of tensile yield
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.5E3
shear_modulus = 1.0E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-1 0.1 0.2 0.1 15 -0.3 0.2 -0.3 0'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/cwp02.i
# Capped weak-plane plasticity
# checking jacobian for tensile failure
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 0 0 0 0 0 0 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 1
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
#petsc_options = '-snes_test_display'
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/cto27.i
# CappedDruckerPrager and CappedWeakPlane, both with all parameters softening/hardening.
# With large tolerance in ComputeMultipleInelasticStress so that only 1 iteration is performed
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 2
internal_limit = 100
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 5
value_residual = 3
internal_limit = 100
[../]
[./mc_coh]
type = TensorMechanicsHardeningCubic
value_0 = 10
value_residual = 1
internal_limit = 100
[../]
[./phi]
type = TensorMechanicsHardeningCubic
value_0 = 0.8
value_residual = 0.4
internal_limit = 50
[../]
[./psi]
type = TensorMechanicsHardeningCubic
value_0 = 0.4
value_residual = 0
internal_limit = 10
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPragerHyperbolic
mc_cohesion = mc_coh
mc_friction_angle = phi
mc_dilation_angle = psi
yield_function_tolerance = 1E-11 # irrelevant here
internal_constraint_tolerance = 1E-9 # irrelevant here
[../]
[./wp_ts]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./wp_cs]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_0 = -2
internal_limit = 0
[../]
[./wp_coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./wp_tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./wp_tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 3
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
lambda = 0.1
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '6 5 4 5 7 2 4 2 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = 'dp wp'
relative_tolerance = 1E4
absolute_tolerance = 2
tangent_operator = nonlinear
[../]
[./dp]
type = CappedDruckerPragerStressUpdate
base_name = cdp
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-11
tip_smoother = 1
smoothing_tol = 1
[../]
[./wp]
type = CappedWeakPlaneStressUpdate
base_name = cwp
cohesion = wp_coh
tan_friction_angle = wp_tanphi
tan_dilation_angle = wp_tanpsi
tensile_strength = wp_ts
compressive_strength = wp_cs
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-11
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update2.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = stress_II ~1 edge
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 0 0 0 0 2.01'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random4.i
# Using CappedMohrCoulomb
# Plasticity models:
# Tensile strength = 0.1MPa
# Compressive strength = 1.0MPa
# Cohesion = 1MPa
# Friction angle = dilation angle = 0.5
#
# Lame lambda = 1GPa. Lame mu = 1.3GPa
#
# A line of elements is perturbed randomly, and return to the yield surface at each quadpoint is checked
[Mesh]
type = GeneratedMesh
dim = 3
nx = 100
ny = 12
nz = 1
xmin = 0
xmax = 100
ymin = 0
ymax = 12
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./f3]
order = CONSTANT
family = MONOMIAL
[../]
[./f4]
order = CONSTANT
family = MONOMIAL
[../]
[./f5]
order = CONSTANT
family = MONOMIAL
[../]
[./f6]
order = CONSTANT
family = MONOMIAL
[../]
[./f7]
order = CONSTANT
family = MONOMIAL
[../]
[./f8]
order = CONSTANT
family = MONOMIAL
[../]
[./f9]
order = CONSTANT
family = MONOMIAL
[../]
[./f10]
order = CONSTANT
family = MONOMIAL
[../]
[./f11]
order = CONSTANT
family = MONOMIAL
[../]
[./int0]
order = CONSTANT
family = MONOMIAL
[../]
[./int1]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./f3]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 3
variable = f3
[../]
[./f4]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 4
variable = f4
[../]
[./f5]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 5
variable = f5
[../]
[./f6]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 6
variable = f6
[../]
[./f7]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 7
variable = f7
[../]
[./f8]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 8
variable = f8
[../]
[./f9]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 9
variable = f9
[../]
[./f10]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 10
variable = f10
[../]
[./f11]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 11
variable = f11
[../]
[./int0]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = int0
[../]
[./int1]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = int1
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[]
[Postprocessors]
[./tot_iters]
type = ElementIntegralMaterialProperty
mat_prop = plastic_NR_iterations
outputs = console
[../]
[./intnl0_max]
type = ElementExtremeValue
variable = int0
outputs = console
[../]
[./intnl1_max]
type = ElementExtremeValue
variable = int1
outputs = console
[../]
[./raw_f0]
type = ElementExtremeValue
variable = f0
outputs = console
[../]
[./raw_f1]
type = ElementExtremeValue
variable = f1
outputs = console
[../]
[./raw_f2]
type = ElementExtremeValue
variable = f2
outputs = console
[../]
[./raw_f3]
type = ElementExtremeValue
variable = f3
outputs = console
[../]
[./raw_f4]
type = ElementExtremeValue
variable = f4
outputs = console
[../]
[./raw_f5]
type = ElementExtremeValue
variable = f5
outputs = console
[../]
[./raw_f6]
type = ElementExtremeValue
variable = f6
outputs = console
[../]
[./raw_f7]
type = ElementExtremeValue
variable = f7
outputs = console
[../]
[./raw_f8]
type = ElementExtremeValue
variable = f8
outputs = console
[../]
[./raw_f9]
type = ElementExtremeValue
variable = f9
outputs = console
[../]
[./raw_f10]
type = ElementExtremeValue
variable = f10
outputs = console
[../]
[./raw_f11]
type = ElementExtremeValue
variable = f11
outputs = console
[../]
[./iter]
type = ElementExtremeValue
variable = iter
outputs = console
[../]
[./f0]
type = FunctionValuePostprocessor
function = should_be_zero0_fcn
[../]
[./f1]
type = FunctionValuePostprocessor
function = should_be_zero1_fcn
[../]
[./f2]
type = FunctionValuePostprocessor
function = should_be_zero2_fcn
[../]
[./f3]
type = FunctionValuePostprocessor
function = should_be_zero3_fcn
[../]
[./f4]
type = FunctionValuePostprocessor
function = should_be_zero4_fcn
[../]
[./f5]
type = FunctionValuePostprocessor
function = should_be_zero5_fcn
[../]
[./f6]
type = FunctionValuePostprocessor
function = should_be_zero6_fcn
[../]
[./f7]
type = FunctionValuePostprocessor
function = should_be_zero7_fcn
[../]
[./f8]
type = FunctionValuePostprocessor
function = should_be_zero8_fcn
[../]
[./f9]
type = FunctionValuePostprocessor
function = should_be_zero9_fcn
[../]
[./f10]
type = FunctionValuePostprocessor
function = should_be_zero10_fcn
[../]
[./f11]
type = FunctionValuePostprocessor
function = should_be_zero11_fcn
[../]
[]
[Functions]
[./should_be_zero0_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f0'
[../]
[./should_be_zero1_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f1'
[../]
[./should_be_zero2_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f2'
[../]
[./should_be_zero3_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f3'
[../]
[./should_be_zero4_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f4'
[../]
[./should_be_zero5_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f5'
[../]
[./should_be_zero6_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f6'
[../]
[./should_be_zero7_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f7'
[../]
[./should_be_zero8_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f8'
[../]
[./should_be_zero9_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f9'
[../]
[./should_be_zero10_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f10'
[../]
[./should_be_zero11_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f11'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1E6
value_residual = 2E6
internal_limit = 1
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 1E7
value_residual = 0.5E7
internal_limit = 1
[../]
[./coh]
type = TensorMechanicsHardeningCubic
value_0 = 2E6
value_residual = 1E6
internal_limit = 1
[../]
[./phi]
type = TensorMechanicsHardeningCubic
value_0 = 0.6
value_residual = 0.2
internal_limit = 1
[../]
[./psi]
type = TensorMechanicsHardeningCubic
value_0 = 0.5
value_residual = 0.1
internal_limit = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '1E9 1.3E9'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 1E5
max_NR_iterations = 1000
yield_function_tol = 1.0E-1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
dtmin = 1
type = Transient
[]
[Outputs]
file_base = random4
csv = true
[]
modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_stress_prescribed.i
#
# 1x1x1 unit cube with time-varying pressure on top face
#
# The problem is a one-dimensional creep analysis. The top face has a
# pressure load that is a function of time. The creep strain can be
# calculated analytically. There is no practical active linear
# isotropic plasticity because the yield stress for the plasticity
# model is set to 1e30 MPa, which will not be reached in this
# regression test.
#
# The analytic solution to this problem is:
#
# d ec
# ---- = a*S^b with S = c*t^d
# dt
#
# d ec = a*c^b*t^(b*d) dt
#
# a*c^b
# ec = ----- t^(b*d+1)
# b*d+1
#
# where S = stress
# ec = creep strain
# t = time
# a = constant
# b = constant
# c = constant
# d = constant
#
# With a = 3e-24,
# b = 4,
# c = 1,
# d = 1/2, and
# t = 32400
# we have
#
# S = t^(1/2) = 180
#
# ec = 1e-24*t^3 = 3.4012224e-11
#
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy creep_strain_yy'
[../]
[]
[Functions]
[./pressure]
type = ParsedFunction
value = 'sqrt(t)'
[../]
[./dts]
type = PiecewiseLinear
y = '1e-2 1e-1 1e0 1e1 1e2'
x = '0 7e-1 7e0 7e1 1e2'
[../]
[]
[BCs]
[./top_pressure]
type = Pressure
variable = disp_y
component = 1
boundary = top
function = pressure
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2.8e7
poissons_ratio = 0.3
[../]
[./creep_plas]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep plas'
tangent_operator = elastic
[../]
[./creep]
type = PowerLawCreepStressUpdate
coefficient = 3.0e-24
n_exponent = 4
m_exponent = 0
activation_energy = 0
[../]
[./plas]
type = IsotropicPlasticityStressUpdate
hardening_constant = 1
yield_stress = 1e30
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = ' lu superlu_dist'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-10
nl_abs_tol = 1e-7
l_tol = 1e-6
start_time = 0.0
end_time = 32400
dt = 1e-2
[./TimeStepper]
type = FunctionDT
function = dts
[../]
[]
[Postprocessors]
[./timestep]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/notched_plastic_block/biaxial_smooth.i
# Uses a multi-smooted version of Mohr-Coulomb (via CappedMohrCoulombStressUpdate and ComputeMultipleInelasticStress) to simulate the following problem.
# A cubical block is notched around its equator.
# All of its outer surfaces have roller BCs, but the notched region is free to move as needed
# The block is initialised with a high hydrostatic tensile stress
# Without the notch, the BCs do not allow contraction of the block, and this stress configuration is admissible
# With the notch, however, the interior parts of the block are free to move in order to relieve stress, and this causes plastic failure
# The top surface is then pulled upwards (the bottom is fixed because of the roller BCs)
# This causes more failure
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 9
ny = 9
nz = 9
xmin = 0
xmax = 0.1
ymin = 0
ymax = 0.1
zmin = 0
zmax = 0.1
[]
[block_to_remove_xmin]
type = SubdomainBoundingBoxGenerator
bottom_left = '-0.01 -0.01 0.045'
top_right = '0.01 0.11 0.055'
location = INSIDE
block_id = 1
input = generated_mesh
[]
[block_to_remove_xmax]
type = SubdomainBoundingBoxGenerator
bottom_left = '0.09 -0.01 0.045'
top_right = '0.11 0.11 0.055'
location = INSIDE
block_id = 1
input = block_to_remove_xmin
[]
[block_to_remove_ymin]
type = SubdomainBoundingBoxGenerator
bottom_left = '-0.01 -0.01 0.045'
top_right = '0.11 0.01 0.055'
location = INSIDE
block_id = 1
input = block_to_remove_xmax
[]
[block_to_remove_ymax]
type = SubdomainBoundingBoxGenerator
bottom_left = '-0.01 0.09 0.045'
top_right = '0.11 0.11 0.055'
location = INSIDE
block_id = 1
input = block_to_remove_ymin
[]
[remove_block]
type = BlockDeletionGenerator
block_id = 1
input = block_to_remove_ymax
[]
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_zz'
eigenstrain_names = ini_stress
[../]
[]
[Postprocessors]
[./uz]
type = PointValue
point = '0 0 0.1'
use_displaced_mesh = false
variable = disp_z
[../]
[./s_zz]
type = ElementAverageValue
use_displaced_mesh = false
variable = stress_zz
[../]
[./num_res]
type = NumResidualEvaluations
[../]
[./nr_its] # num_iters is the average number of NR iterations encountered per element in this timestep
type = ElementAverageValue
variable = num_iters
[../]
[./max_nr_its] # max_num_iters is the maximum number of NR iterations encountered in the element during the whole simulation
type = ElementExtremeValue
variable = max_num_iters
[../]
[./runtime]
type = PerfGraphData
data_type = TOTAL
section_name = 'Root'
[../]
[]
[BCs]
# back=zmin, front=zmax, bottom=ymin, top=ymax, left=xmin, right=xmax
[./xmin_xzero]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./xmax_xzero]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./ymin_yzero]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./ymax_yzero]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./zmin_zzero]
type = DirichletBC
variable = disp_z
boundary = back
value = '0'
[../]
[./zmax_disp]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = '1E-6*max(t,0)'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./num_iters]
order = CONSTANT
family = MONOMIAL
[../]
[./max_num_iters]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./num_iters_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = num_iters
[../]
[./max_num_iters_auxk]
type = MaterialRealAux
property = max_plastic_NR_iterations
variable = max_num_iters
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E16
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 5E6
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 10
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 16E9
poissons_ratio = 0.25
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 0.2E6
yield_function_tol = 1E-5
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./strain_from_initial_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '6E6 0 0 0 6E6 0 0 0 6E6'
eigenstrain_name = ini_stress
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
[../]
[]
[Executioner]
start_time = -1
end_time = 10
dt = 1
solve_type = NEWTON
type = Transient
l_tol = 1E-2
nl_abs_tol = 1E-5
nl_rel_tol = 1E-7
l_max_its = 200
nl_max_its = 400
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[]
[Outputs]
file_base = biaxial_smooth
perf_graph = true
exodus = false
csv = true
[]
modules/combined/test/tests/solid_mechanics/LinearStrainHardening/LinearStrainHardeningRestart2.i
#
[GlobalParams]
volumetric_locking_correction = true
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
file = LinearStrainHardening_test.e
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_mag]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t/5.0
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./plastic_strain_mag]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_mag
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = 5
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = 4
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = 3
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = 2
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 2.1e5
poissons_ratio = 0.3
[../]
[./strain]
type = ComputeFiniteStrain
block = '1'
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = '1'
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 2.4e2
hardening_constant = 1206
relative_tolerance = 1e-25
absolute_tolerance = 1e-5
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 6e-3
end_time = 0.0105
# num_steps = 100
dt = 1.5e-3
[]
[Outputs]
exodus = true
csv = true
[]
[Problem]
restart_file_base = LinearStrainHardeningRestart1_out_cp/0004
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update1.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = 1 plane
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 0 0 0 0 -2'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform21.i
# Mohr-Coulomb only
# apply repeated stretches in x, y and z directions, so that mean_stress = 0
# This maps out the yield surface in the octahedral plane for zero mean stress
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '2E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '2E-6*y*sin(2*t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-2E-6*z*(sin(t)+sin(2*t))'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 1E-12
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 1
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 100
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform21
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform11.i
# use an initial stress, then apply a shear deformation and tensile stretch to observe all hardening.
# Here p_trial=12, q_trial=2*Sqrt(20)
# MOOSE yields:
# q_returned = 1.696
# p_returned = 0.100
# intnl_shear = 1.81
# intnl_tens = 0.886
# These give, at the returned point
# cohesion = 1.84
# tanphi = 0.513
# tanpsi = 0.058
# tensile = 0.412
# This means that
# f_shear = -0.0895
# f_tensile = -0.312
# Note that these are within smoothing_tol (=1) of each other
# Hence, smoothing must be used:
# ismoother = 0.0895
# (which gives the yield function value = 0)
# smoother = 0.328
# This latter gives dg/dq = 0.671, dg/dp = 0.368
# for the flow directions. Finally ga = 2.70, and
# the returned point satisfies the normality conditions.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
eigenstrain_names = ini_stress
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = '0.5*t'
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 't'
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = '0.5*t'
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 0
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 1E8
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 4.0
shear_modulus = 4.0
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 2 0 0 4 2 4 6'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-3
perfect_guess = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform11
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform25.i
# Mohr-Coulomb only
# apply equal stretches in x, y and z directions, to observe return to the MC tip
# Because of smoothing, the expected result is around
# Smax = Smid = Smin = 12.9
# The result is not exact because the smoothing is assymetrical.
# This test also employs a very small dilation angle, which makes return
# to the tip quite numerically difficult, so max_NR_iterations has been increased to 100
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '1E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_max]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_mid]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_min]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 1E-4
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1E7
poissons_ratio = 0.3
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 5
yield_function_tol = 1.0E-9
max_NR_iterations = 100
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform25
csv = true
[]
modules/combined/test/tests/inelastic_strain/elas_plas/elas_plas_nl1.i
#
# Test for effective strain calculation.
# Boundary conditions from NAFEMS test NL1
#
# This is not a verification test. The boundary conditions are applied such
# that the first step generates only elastic stresses. The second and third
# steps generate plastic deformation and the effective strain should be
# increasing throughout the run.
#
[GlobalParams]
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]
file = one_elem2.e
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./pressure]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./eff_plastic_strain]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
execute_on = timestep_end
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
execute_on = timestep_end
[../]
[./pressure]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = pressure
scalar_type = Hydrostatic
execute_on = timestep_end
[../]
[./elastic_strain_xx]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./elastic_strain_yy]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./elastic_strain_zz]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./tot_strain_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./tot_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./tot_strain_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./eff_plastic_strain]
type = MaterialRealAux
property = effective_plastic_strain
variable = eff_plastic_strain
[../]
[]
[Functions]
[./appl_dispy]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0'
y = '0.0 0.208e-4 0.50e-4 1.00e-4'
[../]
[]
[BCs]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 101
value = 0.0
[../]
[./origin_x]
type = DirichletBC
variable = disp_x
boundary = 103
value = 0.0
[../]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 102
value = 0.0
[../]
[./origin_y]
type = DirichletBC
variable = disp_y
boundary = 103
value = 0.0
[../]
[./top_y]
type = FunctionDirichletBC
variable = disp_y
boundary = 1
function = appl_dispy
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 250e9
poissons_ratio = 0.25
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = 1
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 5e6
hardening_constant = 0.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-4
l_max_its = 100
nl_max_its = 20
dt = 1.0
start_time = 0.0
num_steps = 100
end_time = 3.0
[] # Executioner
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./stress_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./stress_xy]
type = ElementAverageValue
variable = stress_xy
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./pressure]
type = ElementAverageValue
variable = pressure
[../]
[./el_strain_xx]
type = ElementAverageValue
variable = elastic_strain_xx
[../]
[./el_strain_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./el_strain_zz]
type = ElementAverageValue
variable = elastic_strain_zz
[../]
[./pl_strain_xx]
type = ElementAverageValue
variable = plastic_strain_xx
[../]
[./pl_strain_yy]
type = ElementAverageValue
variable = plastic_strain_yy
[../]
[./pl_strain_zz]
type = ElementAverageValue
variable = plastic_strain_zz
[../]
[./eff_plastic_strain]
type = ElementAverageValue
variable = eff_plastic_strain
[../]
[./tot_strain_xx]
type = ElementAverageValue
variable = tot_strain_xx
[../]
[./tot_strain_yy]
type = ElementAverageValue
variable = tot_strain_yy
[../]
[./tot_strain_zz]
type = ElementAverageValue
variable = tot_strain_zz
[../]
[./disp_x1]
type = NodalVariableValue
nodeid = 0
variable = disp_x
[../]
[./disp_x4]
type = NodalVariableValue
nodeid = 3
variable = disp_x
[../]
[./disp_y1]
type = NodalVariableValue
nodeid = 0
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
csv = true
[./console]
type = Console
output_linear = true
[../]
[] # Outputs
modules/porous_flow/test/tests/plastic_heating/compressive01.i
# Tensile heating, using capped weak-plane plasticity
# z_disp(z=1) = -t
# totalstrain_zz = -t
# with C_ijkl = 0.5 0.25
# stress_zz = -t, but with compressive_strength = 1, stress_zz = max(-t, -1)
# so plasticstrain_zz = -(t - 1)
# heat_energy_rate = coeff * (t - 1)
# Heat capacity of rock = specific_heat_cap * density = 4
# So temperature of rock should be:
# (1 - porosity) * 4 * T = (1 - porosity) * coeff * (t - 1)
[Mesh]
type = GeneratedMesh
dim = 3
xmin = -10
xmax = 10
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
PorousFlowDictator = dictator
[]
[Variables]
[./temperature]
[../]
[]
[Kernels]
[./energy_dot]
type = PorousFlowEnergyTimeDerivative
variable = temperature
[../]
[./phe]
type = PorousFlowPlasticHeatEnergy
variable = temperature
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[AuxKernels]
[./disp_z]
type = FunctionAux
variable = disp_z
function = '-z*t'
[../]
[]
[UserObjects]
[./dictator]
type = PorousFlowDictator
porous_flow_vars = temperature
number_fluid_phases = 0
number_fluid_components = 0
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 1.0
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./rock_internal_energy]
type = PorousFlowMatrixInternalEnergy
specific_heat_capacity = 2
density = 2
[../]
[./temp]
type = PorousFlowTemperature
temperature = temperature
[../]
[./porosity]
type = PorousFlowPorosityConst
porosity = 0.2
[../]
[./phe]
type = ComputePlasticHeatEnergy
[../]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.5 0.25'
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanphi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-10
perfect_guess = true
[../]
[]
[Postprocessors]
[./temp]
type = PointValue
point = '0 0 0'
variable = temperature
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
dt = 1
end_time = 10
[]
[Outputs]
file_base = compressive01
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update15.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to close to the tip of the yield function.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-15 -1 -0.2 -1 -10 0.3 0.3 -0.2 -8'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/visco/gen_maxwell_relax.i
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
variable = stress_xx
rank_two_tensor = stress
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./strain_xx]
type = RankTwoAux
variable = strain_xx
rank_two_tensor = total_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
variable = creep_strain_xx
rank_two_tensor = creep_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[]
[BCs]
[./symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[../]
[./symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[../]
[./symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[./disp]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.001
[../]
[]
[Materials]
[./maxwell]
type = GeneralizedMaxwellModel
creep_modulus = '3.333333e9 3.333333e9'
creep_viscosity = '1 10'
poisson_ratio = 0.2
young_modulus = 10e9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
[../]
[./creep]
type = LinearViscoelasticStressUpdate
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = maxwell
[../]
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./strain_xx]
type = ElementAverageValue
variable = strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 50
l_tol = 1e-8
nl_max_its = 20
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
dtmin = 0.01
end_time = 100
[./TimeStepper]
type = LogConstantDT
first_dt = 0.1
log_dt = 0.1
[../]
[]
[Outputs]
file_base = gen_maxwell_relax_out
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/cwp07.i
# Capped weak-plane plasticity
# checking jacobian for shear + tensile failure
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 1.0
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.1
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 0
value_residual = 0
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 1 0 0 -1 1 -1 1'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update5.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to close to the tip of the yield function.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '15 1 0.2 1 10 -0.3 -0.3 0.2 8'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/combined/test/tests/combined_plasticity_temperature/plasticity_temperature_dep_yield.i
#
# This is a test of the piece-wise linear strain hardening model using the
# small strain formulation. This test exercises the temperature-dependent
# yield stress.
#
# Test procedure:
# 1. The element is pulled to and then beyond the yield stress for a given
# temperature.
# 2. The displacement is then constant while the temperature increases and
# the yield stress decreases. This results in a lower stress with more
# plastic strain.
# 3. The temperature decreases beyond its original value giving a higher
# yield stress. The displacement increases, causing increases stress to
# the new yield stress.
# 4. The temperature and yield stress are constant with increasing
# displacement giving a constant stress and more plastic strain.
#
# Plotting total_strain_yy on the x axis and stress_yy on the y axis shows
# the stress history in a clear way.
#
# s |
# t | *****
# r | *
# e | ***** *
# s | * * *
# s | * *
# |*
# +------------------
# total strain
#
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy plastic_strain_xx plastic_strain_yy plastic_strain_zz'
[../]
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1 2 4 5 6'
y = '0 0.025 0.05 0.05 0.06 0.085'
[../]
[./yield]
type = PiecewiseLinear
x = '400 500 600'
y = '6e3 5e3 4e3'
[../]
[./temp]
type = PiecewiseLinear
x = '0 1 2 3 4'
y = '500 500 500 600 400'
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./temp]
type = FunctionDirichletBC
variable = temp
function = temp
boundary = left
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
youngs_modulus = 2.0e5
poissons_ratio = 0.3
[../]
[./creep_plas]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
block = 0
inelastic_models = 'plasticity'
max_iterations = 50
absolute_tolerance = 1e-05
[../]
[./plasticity]
type = IsotropicPlasticityStressUpdate
block = 0
hardening_constant = 0
yield_stress_function = yield
temperature = temp
[../]
[./heat_conduction]
type = HeatConductionMaterial
block = 0
specific_heat = 1
thermal_conductivity = 1
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
end_time = 6
dt = 0.1
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform6.i
# Using CappedMohrCoulomb with tensile failure only
# A single element is incrementally stretched in the in the z direction
# This causes the return direction to be along the hypersurface sigma_II = sigma_III,
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
strain = finite
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '4*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = 'y*(t-0.5)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 'z*(t-0.5)'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform6
csv = true
[]
modules/tensor_mechanics/test/tests/material_limit_time_step/elas_plas/nafems_nl1_lim.i
#
# Tests material model IsotropicPlasticity with material based time stepper
# Boundary conditions from NAFEMS test NL1
#
[GlobalParams]
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]#Comment
file = one_elem2.e
[] # Mesh
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[] # Variables
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_eff]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[] # AuxVariables
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
execute_on = timestep_end
[../]
[./elastic_strain_yy]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
[../]
[./plastic_strain_eff]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_eff
[../]
[./tot_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_yy
index_i = 1
index_j = 1
[../]
[] # AuxKernels
[Functions]
[./appl_dispx]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
y = '0.0 0.25e-4 0.50e-4 0.50e-4 0.50e-4 0.25e-4 0.0 0.0 0.0'
[../]
[./appl_dispy]
type = PiecewiseLinear
x = '0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
y = '0.0 0.0 0.0 0.25e-4 0.50e-4 0.50e-4 0.50e-4 0.25e-4 0.0 '
[../]
[]
[BCs]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 101
value = 0.0
[../]
[./origin_x]
type = DirichletBC
variable = disp_x
boundary = 103
value = 0.0
[../]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 102
value = 0.0
[../]
[./origin_y]
type = DirichletBC
variable = disp_y
boundary = 103
value = 0.0
[../]
[./top_y]
type = FunctionDirichletBC
variable = disp_y
boundary = 1
function = appl_dispy
[../]
[./right_x]
type = FunctionDirichletBC
variable = disp_x
boundary = 2
function = appl_dispx
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 250e9
poissons_ratio = 0.25
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = 1
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 5e6
hardening_constant = 0.0
relative_tolerance = 1e-20
absolute_tolerance = 1e-8
max_inelastic_increment = 0.000001
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-4
l_max_its = 100
nl_max_its = 20
[./TimeStepper]
type = IterationAdaptiveDT
dt = 0.1
time_t = '1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0'
time_dt = '0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1'
optimal_iterations = 30
iteration_window = 9
growth_factor = 2.0
cutback_factor = 0.5
timestep_limiting_postprocessor = matl_ts_min
[../]
start_time = 0.0
num_steps = 1000
end_time = 8.0
[] # Executioner
[Postprocessors]
[./matl_ts_min]
type = MaterialTimeStepPostprocessor
[../]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./stress_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./el_strain_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./plas_strain_eff]
type = ElementAverageValue
variable = plastic_strain_eff
[../]
[./tot_strain_yy]
type = ElementAverageValue
variable = tot_strain_yy
[../]
[./disp_x1]
type = NodalVariableValue
nodeid = 0
variable = disp_x
[../]
[./disp_x4]
type = NodalVariableValue
nodeid = 3
variable = disp_x
[../]
[./disp_y1]
type = NodalVariableValue
nodeid = 0
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
csv = true
[./console]
type = Console
output_linear = true
[../]
[] # Outputs
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform8.i
# Using CappedMohrCoulomb with tensile failure only
# A single unit element is stretched by 1E-6m in z direction.
# with Lame lambda = 0.6E6 and Lame mu (shear) = 1E6
# stress_zz = 2.6 Pa
# stress_xx = 0.6 Pa
# stress_yy = 0.6 Pa
# tensile_strength is set to 0.5Pa
#
# stress_zz = 0.5
# plastic multiplier = 2.1/2.6 E-6
# stress_xx = 0.6 - (2.1/2.6*0.6) = 0.115
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1.0E-6*z'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = f0
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = f1
[../]
[./f2]
type = PointValue
point = '0 0 0'
variable = f2
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.6E6 1E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform8
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform9.i
# Using CappedMohrCoulomb with tensile failure only
# A single unit element is stretched in a complicated way
# that the trial stress is
#
# 1.16226 -0.0116587 0.0587872
# -0.0116587 1.12695 0.0779428
# 0.0587872 0.0779428 0.710169
#
# This has eigenvalues
# la = {0.68849, 1.14101, 1.16987}
# and eigenvectors
#
# {-0.125484, -0.176871, 0.976202}
# {-0.0343704, -0.982614, -0.182451}
# {0.9915, -0.0564471, 0.117223}
#
# The tensile strength is 0.5 and Young=1 and Poisson=0.25.
# Using smoothing_tol=0.01, the return-map algorithm should
# return to, approximately, stress_I=stress_II=0.5. This
# is a reduction of 0.66, so stress_III is approximately
# 0.68849 - v * 0.66 * 2 = 0.68849 - 0.25 * 0.66 * 2 = 0.36.
#
# E_22 = E(1-v)/(1+v)/(1-2v) = 1.2, and E_02 = E_22 v/(1-v)
# gamma_shear = ((smax-smin)^trial - (smax-smin)) / (E_22 - E_02)
# = (1-2v) * (smax^trial - smax) / (E_22(1 - 2v)/(1-v))
# = (1 - v) * (smax^trial - smax) / E_22
# Using psi = 30deg, sin(psi) = 1/2
# the shear correction to the tensile internal parameter is
# gamma_shear (E_22 + E_20) sin(psi) = gamma_shear E_22 sin(psi) / (1 - v)
# = gamma_shear E_22 / (1 - v) / 2
# Then the tensile internal parameter is
# (1 - v) * (reduction_of_(max+min)_principal - gamma_shear * E_22 / (1-v) / 2) / E_22
# = (1-v)(1+2v)(smax^trial - smax)/E_22 - gamma_shear / 2
# = 0.41 (approximately)
#
# The final stress is
#
# {0.498, -0.003, 0.017},
# {-0.003, 0.495, 0.024},
# {0.017, 0.024, 0.367}
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
strain = finite
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '3*x+2*y+z'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '3*x-4*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 'x-2*z'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = f0
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = f1
[../]
[./f2]
type = PointValue
point = '0 0 0'
variable = f2
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1
poissons_ratio = 0.25
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.001
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform9
csv = true
[]
modules/tensor_mechanics/test/tests/tensile/small_deform9_update_version.i
# A single unit element is stretched in a complicated way
# that the trial stress is
#
# 1.16226 -0.0116587 0.0587872
# -0.0116587 1.12695 0.0779428
# 0.0587872 0.0779428 0.710169
#
# This has eigenvalues
# la = {0.68849, 1.14101, 1.16987}
# and eigenvectors
#
# {-0.125484, -0.176871, 0.976202}
# {-0.0343704, -0.982614, -0.182451}
# {0.9915, -0.0564471, 0.117223}
#
# The tensile strength is 0.5 and Young=1 and Poisson=0.25.
# Using smoothing_tol=0.01, the return-map algorithm should
# return to, approximately, stress_I=stress_II=0.5. This
# is a reduction of 0.65, so stress_III is approximately
# 0.68849 - 0.25 * 0.65 * 2 = 0.36. The stress_I reduction of
# 0.67 gives an internal parameter of
# 0.67 / (E(1-v)/(1+v)/(1-2v)) = 0.558
# The final stress is
#
# {0.498, -0.003, 0.017},
# {-0.003, 0.495, 0.024},
# {0.017, 0.024, 0.367}
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '3*x+2*y+z'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '3*x-4*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 'x-2*z'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = f0
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = f1
[../]
[./f2]
type = PointValue
point = '0 0 0'
variable = f2
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1
poissons_ratio = 0.25
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.001
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform9_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update3.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = stress_II = stress_III ~1 tip
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 1.9 0 0 0 2.1'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update8.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_limit = 2E-3
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 -1 0.5 1 1.9 0 0.5 0 3'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/combined/test/tests/solid_mechanics/LinearStrainHardening/lsh_pressure.i
#
# This test exercises the linear strain hardening material. The mesh is
# taken from the patch test (7 elements, 1 on the interior). There are
# symmetry bcs on three faces with a pressure load on another face.
#
# Young's modulus = 2.4e5
# Yield stress = 2.4e2
# Hardening constant = 1600
#
# The pressure reaches 2.4e2 at time 1 and 2.6e2 at time 2. Thus, at
# time 1, the stress is at the yield stress. 2.4e2/2.4e5=0.001 (the
# strain at time 1). The increase in stress from time 1 to time 2 is
# 20. 20/1600=0.0125 (the plastic strain). The elastic strain at
# time 2 is 260/2.4e5=0.00108333. The total strain at time 2 is
# 0.01358333.
#
[GlobalParams]
volumetric_locking_correction = true
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
file = lsh_pressure.e
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_mag]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1 2'
y = '0 -2.4e2 -2.6e2'
[../]
[./dts]
type = PiecewiseLinear
x = '0 0.8 1 1.8'
y = '0.8 0.2 0.8 0.2'
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
[../]
[./plastic_strain_mag]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_mag
[../]
[]
[BCs]
[./Pressure]
[./internal_pressure]
boundary = 11
function = top_pull
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
[../]
[../]
[./x]
type = DirichletBC
variable = disp_x
boundary = 10
value = 0.0
[../]
[./y]
type = DirichletBC
variable = disp_y
boundary = 9
value = 0.0
[../]
[./z]
type = DirichletBC
variable = disp_z
boundary = 14
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1 2 3 4 5 6 7'
youngs_modulus = 2.4e5
poissons_ratio = 0.3
[../]
[./strain]
type = ComputeFiniteStrain
block = '1 2 3 4 5 6 7'
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = '1 2 3 4 5 6 7'
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 2.4e2
hardening_constant = 1600
relative_tolerance = 1e-20
absolute_tolerance = 1e-09
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
start_time = 0.0
end_time = 2
dt = 1.5e-3
[./TimeStepper]
type = FunctionDT
function = dts
[../]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/cwp08.i
# Capped weak-plane plasticity
# checking jacobian for shear + compression failure
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 1.0
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.1
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 1 0 0 -1 1 -1 0'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_creep_plasticity_start_time.i
#
# This test is Example 2 from "A Consistent Formulation for the Integration
# of Combined Plasticity and Creep" by P. Duxbury, et al., Int J Numerical
# Methods in Engineering, Vol. 37, pp. 1277-1295, 1994.
#
# The problem is a one-dimensional bar which is loaded from yield to a value of twice
# the initial yield stress and then unloaded to return to the original stress. The
# bar must harden to the required yield stress during the load ramp, with no
# further yielding during unloading. The initial yield stress (sigma_0) is prescribed
# as 20 with a plastic strain hardening of 100. The mesh is a 1x1x1 cube with symmetry
# boundary conditions on three planes to provide a uniaxial stress field.
#
# In the PowerLawCreep model, the creep strain rate is defined by:
#
# edot = A(sigma)**n * exp(-Q/(RT)) * t**m
#
# The creep law specified in the paper, however, defines the creep strain rate as:
#
# edot = Ao * mo * (sigma)**n * t**(mo-1)
# with the creep parameters given by
# Ao = 1e-7
# mo = 0.5
# n = 5
#
# thus, input parameters for the test were specified as:
# A = Ao * mo = 1e-7 * 0.5 = 0.5e-7
# m = mo-1 = -0.5
# n = 5
# Q = 0
#
# The variation of load P with time is:
# P = 20 + 20t 0 < t < 1
# P = 40 - 40(t-1) 1 < t 1.5
#
# The analytic solution for total strain during the loading period 0 < t < 1 is:
#
# e_tot = (sigma_0 + 20*t)/E + 0.2*t + A * t**0.5 * sigma_0**n * [ 1 + (5/3)*t +
# + 2*t**2 + (10/7)*t**3 + (5/9)**t**4 + (1/11)*t**5 ]
#
# and during the unloading period 1 < t < 1.5:
#
# e_tot = (sigma_1 - 40*(t-1))/E + 0.2 + (4672/693) * A * sigma_0**n +
# A * sigma_0**n * [ t**0.5 * ( 32 - (80/3)*t + 16*t**2 - (40/7)*t**3
# + (10/9)*t**4 - (1/11)*t**5 ) - (11531/693) ]
#
# where sigma_1 is the stress at time t = 1.
#
# Assuming a Young's modulus (E) of 1000 and using the parameters defined above:
#
# e_tot(1) = 2.39734
# e_tot(1.5) = 3.16813
#
#
# The numerically computed solution is:
#
# e_tot(1) = 2.39718 (~0.006% error)
# e_tot(1.5) = 3.15555 (~0.40% error)
#
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy elastic_strain_yy creep_strain_yy plastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = ' 10 11 11.5'
y = '-20 -40 -20'
[../]
[./dts]
type = PiecewiseLinear
x = '10 10.5 11.0 11.5'
y = '0.015 0.015 0.005 0.005'
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = 1
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
youngs_modulus = 1e3
poissons_ratio = 0.3
[../]
[./creep_plas]
type = ComputeMultipleInelasticStress
block = 0
tangent_operator = elastic
inelastic_models = 'creep plas'
max_iterations = 50
absolute_tolerance = 1e-05
combined_inelastic_strain_weights = '0.0 1.0'
[../]
[./creep]
type = PowerLawCreepStressUpdate
block = 0
coefficient = 0.5e-7
n_exponent = 5
m_exponent = -0.5
activation_energy = 0
start_time = 10
[../]
[./plas]
type = IsotropicPlasticityStressUpdate
block = 0
hardening_constant = 100
yield_stress = 20
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 6
nl_rel_tol = 1e-6
nl_abs_tol = 1e-10
l_tol = 1e-5
start_time = 10.0
end_time = 11.5
[./TimeStepper]
type = FunctionDT
function = dts
[../]
[]
[Outputs]
exodus = true
[]
modules/combined/test/tests/solid_mechanics/LinearStrainHardening/LinearStrainHardeningRestart1.i
#
[GlobalParams]
volumetric_locking_correction = true
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
file = LinearStrainHardening_test.e
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_mag]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t/5.0
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./plastic_strain_mag]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_mag
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = 5
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = 4
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = 3
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = 2
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 2.1e5
poissons_ratio = 0.3
[../]
[./strain]
type = ComputeFiniteStrain
block = '1'
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = '1'
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 2.4e2
hardening_constant = 1206
relative_tolerance = 1e-25
absolute_tolerance = 1e-5
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
end_time = 0.0105
num_steps = 4
dt = 1.5e-3
[]
[Outputs]
exodus = true
csv = true
[./out]
type = Checkpoint
num_files = 1
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform_inclined3.i
# Plastic deformation, tensile failure, inclined normal = (0, 1, 0)
# With Young = 10, poisson=0.25 (Lame lambda=4, mu=4)
# applying the following
# deformation to the ymax surface of a unit cube:
# disp_x = 4*t
# disp_y = t
# disp_z = 3*t
# should yield trial stress:
# stress_yy = 12*t
# stress_yx = 16*t
# stress_yz = 12*t
# Use tensile strength = 6, we should return to stress_yy = 6,
# and stress_xx = stress_zz = 2*t up to t=1 when the system is completely
# plastic, so these stress components will not change
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = bottom
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = bottom
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = top
function = 4*t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = t
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = top
function = 3*t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 80
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 6
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 40
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakInclinedPlaneStressUpdate
normal_vector = '0 1 0'
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform_inclined3
csv = true
[]
modules/tensor_mechanics/test/tests/material_limit_time_step/creep/nafems_test5a_lim.i
[GlobalParams]
temperature = temp
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]
file = plane1_mesh.e
[]
[Problem]
type = ReferenceResidualProblem
extra_tag_vectors = 'ref'
reference_vector = 'ref'
group_variables = 'disp_x disp_y'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[]
[AuxVariables]
[./temp]
initial_condition = 1500.0
[../]
[./creep]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./pressure]
order = CONSTANT
family = MONOMIAL
[../]
[./invariant3]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
extra_vector_tags = 'ref'
[../]
[]
[AuxKernels]
[./creep_aux]
type = MaterialRealAux
property = effective_creep_strain
variable = creep
[../]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
[../]
[./pressure]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = pressure
scalar_type = Hydrostatic
[../]
[./invariant3]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = invariant3
scalar_type = ThirdInvariant
[../]
[./creep_strain_xx]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_xx
index_i = 0
index_j = 0
[../]
[./creep_strain_yy]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_yy
index_i = 1
index_j = 1
[../]
[./creep_strain_zz]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_zz
index_i = 2
index_j = 2
[../]
[./creep_strain_xy]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_xy
index_i = 0
index_j = 1
[../]
[./elastic_str_xx_aux]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_xx
index_i = 0
index_j = 0
[../]
[./elastic_str_yy_aux]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
[../]
[./elastic_str_zz_aux]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_zz
index_i = 2
index_j = 2
[../]
[]
[BCs]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 1
value = 0.0
[../]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 2
value = 0.0
[../]
[./top_press]
type = Pressure
variable = disp_y
boundary = 3
component = 1
factor = -100.0
[../]
[./side_press]
type = Pressure
variable = disp_x
boundary = 4
component = 0
factor = -200.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 200e3
poissons_ratio = 0.3
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
block = 1
inelastic_models = 'powerlawcrp'
[../]
[./powerlawcrp]
type = PowerLawCreepStressUpdate
block = 1
coefficient = 3.125e-14
n_exponent = 5.0
m_exponent = 0.0
activation_energy = 0.0
max_inelastic_increment = 0.01
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = ' lu superlu_dist'
line_search = 'none'
l_max_its = 50
nl_max_its = 100
end_time = 1000.0
num_steps = 10000
l_tol = 1e-3
[./TimeStepper]
type = IterationAdaptiveDT
dt = 1e-6
time_t = '1e-6 2e-6 3e-6 5e-6 9e-6 1.7e-5 3.3e-5 6.5e-5 1.29e-4 2.57e-4 5.13e-4 1.025e-3 2.049e-3 4.097e-3 8.193e-3 1.638e-2 3.276e-2 5.734e-2 0.106 0.180 0.291 0.457 0.706 1.08 1.64 2.48 3.74 5.63 8.46 12.7 19.1 28.7 43.0 64.5 108.0 194.0 366.0 710.0 1000.0'
time_dt = '1e-6 1e-6 2e-6 4e-6 8e-6 1.6e-5 3.2e-5 6.4e-5 1.28e-4 2.56e-4 5.12e-4 1.024e-3 2.048e-3 4.096e-3 8.192e-3 1.6384e-2 2.458e-2 4.915e-2 7.40e-2 0.111 0.166 0.249 0.374 0.560 0.840 1.26 1.89 2.83 4.25 6.40 9.6 14.3 21.5 43.0 86.1 172.0 344.0 290.0 290.0'
optimal_iterations = 30
iteration_window = 9
growth_factor = 2.0
cutback_factor = 0.5
timestep_limiting_postprocessor = matl_ts_min
[../]
[]
[Postprocessors]
[./matl_ts_min]
type = MaterialTimeStepPostprocessor
[../]
[./sigma_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./sigma_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./sigma_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./pressure]
type = ElementAverageValue
variable = pressure
[../]
[./invariant3]
type = ElementAverageValue
variable = invariant3
[../]
[./eps_crp_xx]
type = ElementAverageValue
variable = creep_strain_xx
[../]
[./eps_crp_yy]
type = ElementAverageValue
variable = creep_strain_yy
[../]
[./eps_crp_zz]
type = ElementAverageValue
variable = creep_strain_zz
[../]
[./eps_crp_mag]
type = ElementAverageValue
variable = creep
[../]
[./disp_x2]
type = NodalVariableValue
nodeid = 1
variable = disp_x
[../]
[./disp_x3]
type = NodalVariableValue
nodeid = 2
variable = disp_x
[../]
[./disp_y3]
type = NodalVariableValue
nodeid = 2
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[./elas_str_xx]
type = ElementAverageValue
variable = elastic_strain_xx
[../]
[./elas_str_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./elas_str_zz]
type = ElementAverageValue
variable = elastic_strain_zz
[../]
[]
[Outputs]
print_linear_residuals = true
perf_graph = true
csv = true
[./out]
type = Exodus
elemental_as_nodal = true
[../]
[./console]
type = Console
max_rows = 25
[../]
[]
modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_stress_relaxation.i
#
# 1x1x1 unit cube with constant displacement on top face
#
# This problem was taken from "Finite element three-dimensional elastic-plastic
# creep analysis" by A. Levy, Eng. Struct., 1981, Vol. 3, January, pp. 9-16.
#
# The problem is a one-dimensional creep analysis. The top face is displaced 0.01
# units and held there. The stress relaxes in time according to the creep law.
#
# The analytic solution to this problem is (contrary to what is shown in the paper):
#
# / (E*ef)^3 \^(1/3)
# stress_yy = |---------------------|
# \ 3*a*E^4*ef^3*t + 1 /
#
# where E = 2.0e11 (Young's modulus)
# a = 3e-26 (creep coefficient)
# ef = 0.01 (displacement)
# t = 2160.0 (time)
#
# such that the analytical solution is computed to be 2.9518e3 Pa
#
# Averaged over the single element block, MOOSE calculates the stress in the yy direction to be
# to be 3.046e3 Pa, which is a 3.2% error from the analytical solution.
#
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Functions]
[./dts]
type = PiecewiseLinear
y = '1e-2 1e-1 1e0 1e1 1e2'
x = '0 7e-1 7e0 7e1 1e2'
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy creep_strain_xx creep_strain_yy creep_strain_zz elastic_strain_yy'
[../]
[]
[BCs]
[./u_top_pull]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.01
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2.0e11
poissons_ratio = 0.3
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'power_law_creep'
[../]
[./power_law_creep]
type = PowerLawCreepStressUpdate
coefficient = 3.0e-26
n_exponent = 4
activation_energy = 0.0
relative_tolerance = 1e-14
absolute_tolerance = 1e-14
[../]
[]
[Postprocessors]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-5
nl_abs_tol = 1e-8
l_tol = 1e-5
start_time = 0.0
end_time = 2160
[./TimeStepper]
type = FunctionDT
function = dts
[../]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update8.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_limit = 1E-3
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 -1 0.5 1 1.9 0 0.5 0 3'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform24.i
# apply repeated stretches in z directions, and smaller stretches along the x and y directions,
# so that sigma_mid = sigma_min (approximately),
# which means that lode angle = -30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.25E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.25E-6*y*sin(t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 5.0
yield_function_tol = 1.0E-7
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 30
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform24
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update3.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = stress_II = stress_III ~1 tip
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 1.9 0 0 0 2.1'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/recompute_radial_return/isotropic_plasticity_errors.i
# This simulation uses the piece-wise linear strain hardening model
# with the incremental small strain formulation; incremental small strain
# is required to produce the strain_increment for the DiscreteRadialReturnStressIncrement
# class, which handles the calculation of the stress increment to return
# to the yield surface in a J2 (isotropic) plasticity problem.
#
# This test is used to check the error messages in the discrete radial return
# model DiscreteRRIsotropicPlasticity; cli_args are used to check all of the
# error messages in the DiscreteRRIsotropicPlasticity model.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t*(0.0625)
[../]
[./harden_func]
type = PiecewiseLinear
x = '0 0.0003 0.0007 0.0009'
y = '50 52 54 56'
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_yy plastic_strain_xx plastic_strain_yy plastic_strain_zz'
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
[../]
[./isotropic_plasticity]
type = IsotropicPlasticityStressUpdate
relative_tolerance = 1e-25
absolute_tolerance = 1e-5
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'isotropic_plasticity'
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-18
nl_abs_tol = 1e-10
l_tol = 1e-12
start_time = 0.0
end_time = 0.025
dt = 0.00125
dtmin = 0.0001
[]
[Outputs]
[./out]
type = Exodus
elemental_as_nodal = true
[../]
[]
modules/combined/test/tests/inelastic_strain/creep/creep_nl1.i
#
# Test for effective strain calculation.
# Boundary conditions from NAFEMS test NL1
#
# This is not a verification test. This is the creep analog of the same test
# in the elas_plas directory. Instead of using the IsotropicPlasticity
# material model this test uses the PowerLawCreep material model.
#
[GlobalParams]
temperature = temp
order = FIRST
family = LAGRANGE
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]
file = one_elem2.e
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./temp]
initial_condition = 600.0
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./pressure]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./elastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./tot_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./eff_creep_strain]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
decomposition_method = EigenSolution
[../]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat_ie]
type = HeatConductionTimeDerivative
variable = temp
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
execute_on = timestep_end
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = VonMisesStress
execute_on = timestep_end
[../]
[./pressure]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = pressure
scalar_type = Hydrostatic
execute_on = timestep_end
[../]
[./elastic_strain_xx]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./elastic_strain_yy]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./elastic_strain_zz]
type = RankTwoAux
rank_two_tensor = elastic_strain
variable = elastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./creep_strain_yy]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./creep_strain_zz]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./tot_strain_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_xx
index_i = 0
index_j = 0
[../]
[./tot_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_yy
index_i = 1
index_j = 1
[../]
[./tot_strain_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = tot_strain_zz
index_i = 2
index_j = 2
[../]
[./eff_creep_strain]
type = MaterialRealAux
property = effective_creep_strain
variable = eff_creep_strain
[../]
[]
[Functions]
[./appl_dispy]
type = PiecewiseLinear
x = '0 1.0 2.0'
y = '0.0 0.25e-4 0.50e-4'
[../]
[]
[BCs]
[./side_x]
type = DirichletBC
variable = disp_x
boundary = 101
value = 0.0
[../]
[./origin_x]
type = DirichletBC
variable = disp_x
boundary = 103
value = 0.0
[../]
[./bot_y]
type = DirichletBC
variable = disp_y
boundary = 102
value = 0.0
[../]
[./origin_y]
type = DirichletBC
variable = disp_y
boundary = 103
value = 0.0
[../]
[./top_y]
type = FunctionDirichletBC
variable = disp_y
boundary = 1
function = appl_dispy
[../]
[./temp_fix]
type = DirichletBC
variable = temp
boundary = '1 2'
value = 600.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 1
youngs_modulus = 250e9
poissons_ratio = 0.25
[../]
[./strain]
type = ComputePlaneFiniteStrain
block = 1
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
block = 1
inelastic_models = 'powerlawcrp'
[../]
[./powerlawcrp]
type = PowerLawCreepStressUpdate
block = 1
coefficient = 3.125e-14
n_exponent = 5.0
m_exponent = 0.0
activation_energy = 0.0
[../]
[./thermal]
type = HeatConductionMaterial
block = 1
specific_heat = 1.0
thermal_conductivity = 100.
[../]
[./density]
type = Density
block = 1
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-6
l_max_its = 100
nl_max_its = 20
dt = 1.0
start_time = 0.0
num_steps = 100
end_time = 2.0
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
[../]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./stress_zz]
type = ElementAverageValue
variable = stress_zz
[../]
[./stress_xy]
type = ElementAverageValue
variable = stress_xy
[../]
[./vonmises]
type = ElementAverageValue
variable = vonmises
[../]
[./pressure]
type = ElementAverageValue
variable = pressure
[../]
[./el_strain_xx]
type = ElementAverageValue
variable = elastic_strain_xx
[../]
[./el_strain_yy]
type = ElementAverageValue
variable = elastic_strain_yy
[../]
[./el_strain_zz]
type = ElementAverageValue
variable = elastic_strain_zz
[../]
[./crp_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
[../]
[./crp_strain_yy]
type = ElementAverageValue
variable = creep_strain_yy
[../]
[./crp_strain_zz]
type = ElementAverageValue
variable = creep_strain_zz
[../]
[./eff_creep_strain]
type = ElementAverageValue
variable = eff_creep_strain
[../]
[./tot_strain_xx]
type = ElementAverageValue
variable = tot_strain_xx
[../]
[./tot_strain_yy]
type = ElementAverageValue
variable = tot_strain_yy
[../]
[./tot_strain_zz]
type = ElementAverageValue
variable = tot_strain_zz
[../]
[./disp_x1]
type = NodalVariableValue
nodeid = 0
variable = disp_x
[../]
[./disp_x4]
type = NodalVariableValue
nodeid = 3
variable = disp_x
[../]
[./disp_y1]
type = NodalVariableValue
nodeid = 0
variable = disp_y
[../]
[./disp_y4]
type = NodalVariableValue
nodeid = 3
variable = disp_y
[../]
[./_dt]
type = TimestepSize
[../]
[]
[Outputs]
exodus = true
[./console]
type = Console
output_linear = true
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update6.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to the plane of tensile yield
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-1 0.1 0.2 0.1 15 -0.3 0.2 -0.3 0'
eigenstrain_name = ini_stress
[../]
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update2.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = stress_II ~1 edge
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 0 0 0 0 2.01'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update16.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to the plane of compressive yield
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '1 -0.1 -0.2 -0.1 -15 0.3 -0.2 0.3 0'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform2.i
# Using CappedMohrCoulomb with tensile failure only
# checking for small deformation
# A single element is stretched equally in all directions.
# This causes the return direction to be along the sigma_I = sigma_II = sigma_III line
# tensile_strength is set to 1Pa, and smoothing_tol = 0.1Pa
# The smoothed yield function comes from two smoothing operations.
# The first is on sigma_I and sigma_II (sigma_I >= sigma_II >= sigma_III):
# yf = sigma_I + ismoother(0) - tensile_strength
# = sigma_I + (0.5 * smoothing_tol - smoothing_tol / Pi) - tensile_strength
# = sigma_I + 0.018169 - 1
# The second has the argument of ismoother equal to -0.018169.
# ismoother(-0.018169) = 0.5 * (-0.018169 + 0.1) - 0.1 * cos (0.5 * Pi * -0.018169 / 0.1) / Pi
# = 0.010372
# So the final yield function is
# yf = sigma_I + 0.018169 + 0.010372 - 1 = sigma_I + 0.028541 - 1
# However, because of the asymmetry in smoothing (the yield function is obtained
# by first smoothing sigma_I-ts and sigma_II-ts, and then by smoothing this
# result with sigma_III-ts) the result is sigma_I = sigma_II > sigma_III
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
strain = finite
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '1E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2
csv = true
[]
modules/tensor_mechanics/test/tests/recompute_radial_return/affine_plasticity.i
# Affine Plasticity Test for Transient Stress Eigenvalues with Stationary Eigenvectors
# This test is taken from K. Jamojjala, R. Brannon, A. Sadeghirad, J. Guilkey,
# "Verification tests in solid mechanics," Engineering with Computers, Vol 31.,
# p. 193-213.
# The test involves applying particular strains and expecting particular stresses.
# The material properties are:
# Yield in shear 165 MPa
# Shear modulus 79 GPa
# Poisson's ratio 1/3
# The strains are:
# Time e11 e22 e33
# 0 0 0 0
# 1 -0.003 -0.003 0.006
# 2 -0.0103923 0 0.0103923
# The expected stresses are:
# sigma11:
# -474*t 0 < t <= 0.201
# -95.26 0.201 < t <= 1
# (189.4+0.1704*sqrt(a)-0.003242*a)
# --------------------------------- 1 < t <= 2
# 1+0.00001712*a
# -189.4 t > 2 (paper erroneously gives a positive value)
#
# sigma22:
# -474*t 0 < t <= 0.201
# -95.26 0.201 < t <= 1
# -(76.87+1.443*sqrt(a)-0.001316*a)
# --------------------------------- 1 < t <= 2 (paper gives opposite sign)
# 1+0.00001712*a
# 76.87 t > 2
#
# sigma33:
# 948*t 0 < t <= 0.201
# 190.5 0.201 < t <= 1
# -(112.5-1.272*sqrt(a)-0.001926*a)
# --------------------------------- 1 < t <= 2 (paper has two sign errors here)
# 1+0.00001712*a
# 112.5 t > 2
#
# where a = exp(12.33*t).
#
# Note: If planning to run this case with strain type ComputeFiniteStrain, the
# displacement function must be adjusted. Instead of
# strain = (l - l0)/l0 = (u+l0 - l0)/l0 = u/l0
# with l0=1.0, we would have
# strain = log(l/l0) = log((u+l0)/l0)
# with l0=1.0. So, for strain = -0.003,
# -0.003 = log((u+l0)/l0) ->
# u = exp(-0.003)*l0 - l0 = -0.0029955044966269995.
#
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
block = '0'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
# This test uses ElementalVariableValue postprocessors on specific
# elements, so element numbering needs to stay unchanged
allow_renumbering = false
[]
[Functions]
[./disp_x]
type = PiecewiseLinear
x = '0. 1. 2.'
y = '0. -0.003 -0.0103923'
[../]
[./disp_y]
type = PiecewiseLinear
x = '0. 1. 2.'
y = '0. -0.003 0.'
[../]
[./disp_z]
type = PiecewiseLinear
x = '0. 1. 2.'
y = '0. 0.006 0.0103923'
[../]
[./stress_xx]
type = ParsedFunction
# The paper gives 0.201 as the time at initial yield, but 0.20097635952803425 is the exact value.
# The paper gives -95.26 MPa as the stress at yield, but -95.26279441628823 is the exact value.
# The paper gives 12.33 as the factor in the exponential, but 12.332921390339125 is the exact value.
# 189.409039923814000, 0.170423791206825, -0.003242011311945, 1.711645501845780E-05 - exact values
vars = 'timeAtYield stressAtYield expFac a b c d'
vals = '0.20097635952803425 -95.26279441628823 12.332921390339125 189.409039923814000 0.170423791206825 -0.003242011311945 1.711645501845780E-05'
value = '1e6*
if(t<=timeAtYield, -474*t,
if(t<=1, stressAtYield,
(a+b*sqrt(exp(expFac*t))+c*exp(expFac*t))/(1.0+d*exp(expFac*t))))' # tends to -a
[../]
[./stress_yy]
type = ParsedFunction
# The paper gives 0.201 as the time at initial yield, but 0.20097635952803425 is the exact value.
# the paper gives -95.26 MPa as the stress at yield, but -95.26279441628823 is the exact value.
# The paper gives 12.33 as the factor in the exponential, but 12.332921390339125 is the exact value.
# -76.867432297315000, -1.442488120272900, 0.001315697947301, 1.711645501845780E-05 - exact values
vars = 'timeAtYield stressAtYield expFac a b c d'
vals = '0.20097635952803425 -95.26279441628823 12.332921390339125 -76.867432297315000 -1.442488120272900 0.001315697947301 1.711645501845780E-05'
value = '1e6*
if(t<=timeAtYield, -474*t,
if(t<=1, stressAtYield,
(a+b*sqrt(exp(expFac*t))+c*exp(expFac*t))/(1.0+d*exp(expFac*t))))' # tends to -a
[../]
[./stress_zz]
type = ParsedFunction
# The paper gives 0.201 as the time at initial yield, but 0.20097635952803425 is the exact value.
# the paper gives 190.5 MPa as the stress at yield, but 190.52558883257645 is the exact value.
# The paper gives 12.33 as the factor in the exponential, but 12.332921390339125 is the exact value.
# -112.541607626499000, 1.272064329066080, 0.001926313364644, 1.711645501845780E-05 - exact values
vars = 'timeAtYield stressAtYield expFac a b c d'
vals = '0.20097635952803425 190.52558883257645 12.332921390339125 -112.541607626499000 1.272064329066080 0.001926313364644 1.711645501845780E-05'
value = '1e6*
if(t<=timeAtYield, 948*t,
if(t<=1, stressAtYield,
(a+b*sqrt(exp(expFac*t))+c*exp(expFac*t))/(1.0+d*exp(expFac*t))))' # tends to -a
[../]
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./vonmises]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
execute_on = 'timestep_end'
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = 'timestep_end'
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
execute_on = 'timestep_end'
[../]
[./vonmises]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = vonmises
scalar_type = vonmisesStress
execute_on = 'timestep_end'
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = 'timestep_end'
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = 'timestep_end'
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
execute_on = 'timestep_end'
[../]
[]
[BCs]
[./fixed_x]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./fixed_y]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./fixed_z]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./disp_x]
type = FunctionDirichletBC
variable = disp_x
boundary = right
function = disp_x
[../]
[./disp_y]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = disp_y
[../]
[./disp_z]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = disp_z
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 210666666666.666667
poissons_ratio = 0.3333333333333333
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./isotropic_plasticity]
type = IsotropicPlasticityStressUpdate
yield_stress = 285788383.2488647 # = sqrt(3)*165e6 = sqrt(3) * yield in shear
hardening_constant = 0.0
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'isotropic_plasticity'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-pc_type'
petsc_options_value = 'lu'
nl_abs_tol = 1e-10
l_max_its = 20
start_time = 0.0
dt = 0.01 # use 0.0001 for a nearly exact match
end_time = 2.0
[]
[Postprocessors]
[./analytic_xx]
type = FunctionValuePostprocessor
function = stress_xx
[../]
[./analytic_yy]
type = FunctionValuePostprocessor
function = stress_yy
[../]
[./analytic_zz]
type = FunctionValuePostprocessor
function = stress_zz
[../]
[./stress_xx]
type = ElementalVariableValue
variable = stress_xx
elementid = 0
[../]
[./stress_yy]
type = ElementalVariableValue
variable = stress_yy
elementid = 0
[../]
[./stress_zz]
type = ElementalVariableValue
variable = stress_zz
elementid = 0
[../]
[./stress_xx_l2_error]
type = ElementL2Error
variable = stress_xx
function = stress_xx
[../]
[./stress_yy_l2_error]
type = ElementL2Error
variable = stress_yy
function = stress_yy
[../]
[./stress_zz_l2_error]
type = ElementL2Error
variable = stress_zz
function = stress_zz
[../]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/notched_plastic_block/cmc_smooth.i
# Uses a multi-smoothed version of capped-Mohr-Coulomb (via CappedMohrCoulombStressUpdate and ComputeMultipleInelasticStress) to simulate the following problem.
# A cubical block is notched around its equator.
# All of its outer surfaces have roller BCs, but the notched region is free to move as needed
# The block is initialised with a high hydrostatic tensile stress
# Without the notch, the BCs do not allow contraction of the block, and this stress configuration is admissible
# With the notch, however, the interior parts of the block are free to move in order to relieve stress, and this causes plastic failure
# The top surface is then pulled upwards (the bottom is fixed because of the roller BCs)
# This causes more failure
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 9
ny = 9
nz = 9
xmin = 0
xmax = 0.1
ymin = 0
ymax = 0.1
zmin = 0
zmax = 0.1
[]
[block_to_remove_xmin]
type = SubdomainBoundingBoxGenerator
bottom_left = '-0.01 -0.01 0.045'
top_right = '0.01 0.11 0.055'
location = INSIDE
block_id = 1
input = generated_mesh
[]
[block_to_remove_xmax]
type = SubdomainBoundingBoxGenerator
bottom_left = '0.09 -0.01 0.045'
top_right = '0.11 0.11 0.055'
location = INSIDE
block_id = 1
input = block_to_remove_xmin
[]
[block_to_remove_ymin]
type = SubdomainBoundingBoxGenerator
bottom_left = '-0.01 -0.01 0.045'
top_right = '0.11 0.01 0.055'
location = INSIDE
block_id = 1
input = block_to_remove_xmax
[]
[block_to_remove_ymax]
type = SubdomainBoundingBoxGenerator
bottom_left = '-0.01 0.09 0.045'
top_right = '0.11 0.11 0.055'
location = INSIDE
block_id = 1
input = block_to_remove_ymin
[]
[remove_block]
type = BlockDeletionGenerator
block_id = 1
input = block_to_remove_ymax
[]
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_zz'
eigenstrain_names = ini_stress
[../]
[]
[Postprocessors]
[./uz]
type = PointValue
point = '0 0 0.1'
use_displaced_mesh = false
variable = disp_z
[../]
[./s_zz]
type = ElementAverageValue
use_displaced_mesh = false
variable = stress_zz
[../]
[./num_res]
type = NumResidualEvaluations
[../]
[./nr_its] # num_iters is the average number of NR iterations encountered per element in this timestep
type = ElementAverageValue
variable = num_iters
[../]
[./max_nr_its] # max_num_iters is the maximum number of NR iterations encountered in the element during the whole simulation
type = ElementExtremeValue
variable = max_num_iters
[../]
[./runtime]
type = PerfGraphData
data_type = TOTAL
section_name = 'Root'
[../]
[]
[BCs]
# back=zmin, front=zmax, bottom=ymin, top=ymax, left=xmin, right=xmax
[./xmin_xzero]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./xmax_xzero]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./ymin_yzero]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./ymax_yzero]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./zmin_zzero]
type = DirichletBC
variable = disp_z
boundary = back
value = '0'
[../]
[./zmax_disp]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = '1E-6*max(t,0)'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./num_iters]
order = CONSTANT
family = MONOMIAL
[../]
[./max_num_iters]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./num_iters_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = num_iters
[../]
[./max_num_iters_auxk]
type = MaterialRealAux
property = max_plastic_NR_iterations
variable = max_num_iters
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 3E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E16
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 5E6
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 10
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 16E9
poissons_ratio = 0.25
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 0.2E6
yield_function_tol = 1E-5
perfect_guess = false # this is so we can observe some Newton-Raphson iterations, for comparison with other models, and it is not optimal in any real-life simulations
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./strain_from_initial_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2.5E6 0 0 0 2.5E6 0 0 0 2.5E6'
eigenstrain_name = ini_stress
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
[../]
[]
[Executioner]
start_time = -1
end_time = 10
dt = 1
solve_type = NEWTON
type = Transient
l_tol = 1E-2
nl_abs_tol = 1E-5
nl_rel_tol = 1E-7
l_max_its = 200
nl_max_its = 400
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[]
[Outputs]
file_base = cmc_smooth
perf_graph = true
exodus = false
csv = true
[]
modules/tensor_mechanics/test/tests/tensile/small_deform1_update_version.i
# Using TensileStressUpdate
# checking for small deformation
# A single element is stretched by 1E-6m in z direction, and by small amounts in x and y directions
# stress_zz = Youngs Modulus*Strain = 2E6*1E-6 = 2 Pa
# tensile_strength is set to 1Pa
# Then the final stress should return to the yeild surface and the maximum principal stress value should be 1pa.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.2E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.0
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform1_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/visco/gen_maxwell_driving.i
# Represents a unique Maxwell module with E = 10GPa and eta = 10 days with an imposed eigenstrain alpha = 0.001.
# The behavior is set up so that the creep strain is driven by both the elastic stress and the internal
# stress induced by the eigenstrain (E * alpha).
#
# In this test, the specimen is free of external stress (sigma = 0) so the creep deformation only derives from
# the eigenstrain. The total strain to be expected is:
# epsilon = alpha * (1 + t / eta)
# Both the stress and the elastic strain are 0.
#
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
variable = stress_xx
rank_two_tensor = stress
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./strain_xx]
type = RankTwoAux
variable = strain_xx
rank_two_tensor = total_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
variable = creep_strain_xx
rank_two_tensor = creep_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[]
[BCs]
[./symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[../]
[./symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[../]
[./symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[]
[Materials]
[./eigen]
type = ComputeEigenstrain
eigenstrain_name = eigen_true
eigen_base = '1e-3 1e-3 1e-3 0 0 0'
[../]
[./maxwell]
type = GeneralizedMaxwellModel
creep_modulus = '10e9'
creep_viscosity = '10'
poisson_ratio = 0.2
young_modulus = 10e9
driving_eigenstrain = eigen_true
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
[../]
[./creep]
type = LinearViscoelasticStressUpdate
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = 'eigen_true'
[../]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = maxwell
[../]
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./strain_xx]
type = ElementAverageValue
variable = strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 50
l_tol = 1e-8
nl_max_its = 20
nl_rel_tol = 1e-11
nl_abs_tol = 1e-8
dtmin = 0.01
end_time = 100
[./TimeStepper]
type = LogConstantDT
first_dt = 0.1
log_dt = 0.1
[../]
[]
[Outputs]
file_base = gen_maxwell_driving_out
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform7.i
# Using CappedMohrCoulomb with tensile failure only
# A single element is incrementally stretched in the in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = sigma_II
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
strain = finite
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '4*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '1*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '4*z*t'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform7
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/cwp05.i
# Capped weak-plane plasticity
# checking jacobian for shear failure
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 1.0
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.1
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 1 0 0 10 1 10 0'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
#petsc_options = '-snes_test_display'
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform13.i
# Using CappedMohrCoulomb with compressive failure only
# checking for small deformation
# A single element is compressed by "ep" in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = sigma_II
# where sigma_I = (E_2222 + E_2200) * ep
# compressive_strength is set to 1Pa, smoothing_tol = 0.1Pa
# The smoothed yield function is
# yf = -sigma_I + ismoother(0) - compressive_strength
# = -sigma_I + (0.5 * smoothing_tol - smoothing_tol / Pi) - compressive_strength
# = -sigma_I - 0.98183
#
# With zero Poisson's ratio, the return stress will be
# stress_00 = stress_22 = 0.98183
# with all other stress components being zero
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-0.25E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-0.25E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform13
csv = true
[]
modules/tensor_mechanics/test/tests/multiple_two_parameter_plasticity/dp_and_wp.i
# Use ComputeMultipleInelasticStress with two inelastic models: CappedDruckerPrager and CappedWeakPlane.
# The relative_tolerance and absolute_tolerance parameters are set small so that many
# Picard iterations need to be performed.
#
# The CappedDruckerPrager has tensile strength 3E2 and large cohesion,
# and the return-map sets stress = trial_stress - diag(d, d, d), for
# some d to be determined
# The CappedWeakPlane has tensile strength zero and large cohesion,
# and the return-map sets stress = diag(t - v*w/(1-v), t - v*w/(1-v), t - w)
# where t is trial stress, v is Poisson's ratio, and w is to be determined
#
# d and w are determined by demanding that the final stress shouldn't depend
# on the order of return-mapping (DP first then WP, or WP first then DP).
#
# Let the initial_stress = diag(I, I, I).
# The returned stress is diag(I - d - v*w/(1-v), I - d - v*w/(1-v), I - d - w). This
# must obey Tr(stress) <= dp_tensile_strength, and I-d-w <= wp_tensile_strength.
#
# For I = 1E3, and v = 0.2, the solution is d = 800 and w = 200, with
# stress = diag(150, 150, 0)
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
eigenstrain_names = ini_stress
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = 0
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = 0
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 0
[../]
[]
[AuxVariables]
[./yield_fcn_dp]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn_wp]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_dp_auxk]
type = MaterialStdVectorAux
index = 1 # this is the tensile yield function - it should be zero
property = cdp_plastic_yield_function
variable = yield_fcn_dp
[../]
[./yield_fcn_wp_auxk]
type = MaterialStdVectorAux
index = 1 # this is the tensile yield function - it should be zero
property = cwp_plastic_yield_function
variable = yield_fcn_wp
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f_dp]
type = PointValue
point = '0 0 0'
variable = yield_fcn_dp
[../]
[./f_wp]
type = PointValue
point = '0 0 0'
variable = yield_fcn_wp
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 300
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[./wp_coh]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./wp_tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./wp_tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./wp_t_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./wp_c_strength]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
poissons_ratio = 0.2
youngs_modulus = 1E7
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '1E3 0 0 0 1E3 0 0 0 1E3'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
relative_tolerance = 1E-8
inelastic_models = 'cdp cwp'
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
base_name = cdp
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-5
tip_smoother = 1E3
smoothing_tol = 1E3
[../]
[./cwp]
type = CappedWeakPlaneStressUpdate
base_name = cwp
cohesion = wp_coh
tan_friction_angle = wp_tanphi
tan_dilation_angle = wp_tanpsi
tensile_strength = wp_t_strength
compressive_strength = wp_c_strength
tip_smoother = 1E3
smoothing_tol = 1E3
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = dp_and_wp
csv = true
[]
modules/porous_flow/test/tests/plastic_heating/tensile01.i
# Tensile heating, using capped weak-plane plasticity
# z_disp(z=1) = t
# totalstrain_zz = t
# with C_ijkl = 0.5 0.25
# stress_zz = t, but with tensile_strength = 1, stress_zz = min(t, 1)
# so plasticstrain_zz = t - 1
# heat_energy_rate = coeff * (t - 1)
# Heat capacity of rock = specific_heat_cap * density = 4
# So temperature of rock should be:
# (1 - porosity) * 4 * T = (1 - porosity) * coeff * (t - 1)
[Mesh]
type = GeneratedMesh
dim = 3
xmin = -10
xmax = 10
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
PorousFlowDictator = dictator
[]
[Variables]
[./temperature]
[../]
[]
[Kernels]
[./energy_dot]
type = PorousFlowEnergyTimeDerivative
variable = temperature
[../]
[./phe]
type = PorousFlowPlasticHeatEnergy
variable = temperature
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[AuxKernels]
[./disp_z]
type = FunctionAux
variable = disp_z
function = z*t
[../]
[]
[UserObjects]
[./dictator]
type = PorousFlowDictator
porous_flow_vars = temperature
number_fluid_phases = 0
number_fluid_components = 0
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 1.0
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./rock_internal_energy]
type = PorousFlowMatrixInternalEnergy
specific_heat_capacity = 2
density = 2
[../]
[./temp]
type = PorousFlowTemperature
temperature = temperature
[../]
[./porosity]
type = PorousFlowPorosityConst
porosity = 0.2
[../]
[./phe]
type = ComputePlasticHeatEnergy
[../]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.5 0.25'
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanphi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-10
perfect_guess = true
[../]
[]
[Postprocessors]
[./temp]
type = PointValue
point = '0 0 0'
variable = temperature
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
dt = 1
end_time = 10
[]
[Outputs]
file_base = tensile01
csv = true
[]
modules/combined/test/tests/power_law_creep/power_law_creep_restart2.i
# 1x1x1 unit cube with uniform pressure on top face
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 1000.0
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy creep_strain_xx creep_strain_yy creep_strain_zz elastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1'
y = '1 1'
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat_ie]
type = HeatConductionTimeDerivative
variable = temp
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = -10.0e6
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./temp_fix]
type = DirichletBC
variable = temp
boundary = 'bottom top'
value = 1000.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2e11
poissons_ratio = 0.3
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'power_law_creep'
tangent_operator = elastic
[../]
[./power_law_creep]
type = PowerLawCreepStressUpdate
coefficient = 1.0e-15
n_exponent = 4
activation_energy = 3.0e5
temperature = temp
[../]
[./thermal]
type = HeatConductionMaterial
specific_heat = 1.0
thermal_conductivity = 100.
[../]
[./density]
type = Density
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 20
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
l_tol = 1e-5
start_time = 0.6
end_time = 1.0
num_steps = 12
dt = 0.1
[]
[Outputs]
file_base = power_law_creep_out
exodus = true
[]
[Problem]
restart_file_base = power_law_creep_restart1_out_cp/0006
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform_inclined2.i
# Plastic deformation, tensile failure, with normal=(1,0,0)
# With Lame lambda=0 and Lame mu=1, applying the following
# deformation to the zmax surface of a unit cube:
# disp_x = t
# should yield trial stress:
# stress_xx = 2*t
# Use tensile strength = 1, we should return to stress_xx = 1
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = left
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = left
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = right
function = t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = right
function = 0
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = right
function = 0
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 30
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 40
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakInclinedPlaneStressUpdate
normal_vector = '1 0 0'
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform_inclined2
csv = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_lode_zero.i
# apply repeated stretches in x z directions, and smaller stretches along the y direction,
# so that sigma_I = sigma_II,
# which means that lode angle = 30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-1.7E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = lode_zero
yield_function_tolerance = 1 # irrelevant here
internal_constraint_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 8
smoothing_tol = 1E-7
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3_lode_zero
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update34.i
# MC update version, with only MohrCoulomb, cohesion=40, friction angle = 35deg, psi = 5deg, smoothing_tol = 0.5
# Compressive strength = 1MPa
# Lame lambda = 1E3. Lame mu = 1.3E3
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E2
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 4E1
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-100.1 -0.1 0.2 -0.1 -0.9 0 0.2 0 -1.1'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/recompute_radial_return/uniaxial_viscoplasticity_incrementalstrain.i
# This is a test of the HyperbolicViscoplasticityStressUpdate model
# using the small strain formulation. The material is a visco-plastic material
# i.e. a time-dependent linear strain hardening plasticity model.
# A similar problem was run in Abaqus with exactly the same result, although the element
# used in the Abaqus simulation was a CAX4 element. Neverthless, due to the boundary conditions
# and load, the MOOSE and Abaqus result are the same.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
file = 1x1x1cube.e
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t/100
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_yy plastic_strain_xx plastic_strain_yy plastic_strain_zz'
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = 5
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = 4
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = 3
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = 2
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1000.0
poissons_ratio = 0.3
[../]
[./viscoplasticity]
type = HyperbolicViscoplasticityStressUpdate
yield_stress = 10.0
hardening_constant = 100.0
c_alpha = 0.2418e-6
c_beta = 0.1135
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'viscoplasticity'
tangent_operator = elastic
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
line_search = none
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
num_steps = 30
dt = 1.0
[]
[Outputs]
[./out]
type = Exodus
elemental_as_nodal = true
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform1.i
# Elastic deformation.
# With Lame lambda=0 and Lame mu=1, applying the following
# deformation to the zmax surface of a unit cube:
# disp_x = 8*t
# disp_y = 6*t
# disp_z = t
# should yield stress:
# stress_xz = 8*t
# stress_xy = 6*t
# stress_zz = 2*t
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 8*t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 6*t
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = t
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = combined_inelastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = combined_inelastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = combined_inelastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = combined_inelastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = combined_inelastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = combined_inelastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = strainp_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = strainp_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = strainp_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = strainp_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = strainp_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = strainp_zz
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = ''
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform1
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update33.i
# MC update version, with only MohrCoulomb, cohesion=40, friction angle = 35deg, psi = 5deg, smoothing_tol = 0.5
# Compressive strength = 1MPa
# Lame lambda = 1E3. Lame mu = 1.3E3
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 4E1
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.5
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-10 -12 14 -12 -5 -20 14 -20 -8'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/phe01.i
# Capped weak-plane plasticity, Kernel = PlasticHeatEnergy
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./silly_phe]
type = PlasticHeatEnergy
coeff = 0.5
variable = disp_x
[../]
[./dummy_disp_y]
type = TimeDerivative
variable = disp_y
[../]
[./dummy_disp_z]
type = TimeDerivative
variable = disp_z
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 3
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_0 = -2
internal_limit = 0
[../]
[]
[Materials]
[./phe]
type = ComputePlasticHeatEnergy
[../]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 0 0 0 1 0 1 -1.5'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-10
perfect_guess = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/scalar_material_damage/scalar_material_damage_creep.i
# This is a basic test of the system for continuum damage mechanics
# materials. It uses ScalarMaterialDamage for the damage model,
# which simply gets its damage index from another material. In this
# case, we prescribe the evolution of the damage index using a
# function. A single element has a fixed prescribed displacement
# on one side that puts the element in tension, and then the
# damage index evolves from 0 to 1 over time, and this verifies
# that the stress correspondingly drops to 0.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
[]
[AuxVariables]
[damage_index]
order = CONSTANT
family = MONOMIAL
[]
[]
[Modules/TensorMechanics/Master]
[all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_xx strain_xx creep_strain_xx'
[]
[]
[AuxKernels]
[damage_index]
type = MaterialRealAux
variable = damage_index
property = damage_index_prop
execute_on = timestep_end
[]
[]
[BCs]
[symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[]
[symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[]
[symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[]
[axial_load]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.01
[]
[]
[Functions]
[damage_evolution]
type = PiecewiseLinear
xy_data = '0.0 0.0
0.1 0.0
2.1 2.0'
[]
[]
[Materials]
[damage_index]
type = GenericFunctionMaterial
prop_names = damage_index_prop
prop_values = damage_evolution
[]
[damage]
type = ScalarMaterialDamage
damage_index = damage_index_prop
[]
[stress]
type = ComputeMultipleInelasticStress
damage_model = damage
inelastic_models = 'creep'
[]
[kelvin_voigt]
type = GeneralizedKelvinVoigtModel
creep_modulus = '10e9 10e9'
creep_viscosity = '1 10'
poisson_ratio = 0.2
young_modulus = 10e9
[]
[creep]
type = LinearViscoelasticStressUpdate
[]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = kelvin_voigt
[../]
[]
[Postprocessors]
[stress_xx]
type = ElementAverageValue
variable = stress_xx
[]
[strain_xx]
type = ElementAverageValue
variable = strain_xx
[]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
[../]
[damage_index]
type = ElementAverageValue
variable = damage_index
[]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 50
l_tol = 1e-8
nl_max_its = 20
nl_rel_tol = 1e-10
nl_abs_tol = 1e-8
dt = 0.1
dtmin = 0.001
end_time = 1.1
[]
[Outputs]
csv=true
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform18.i
# Using CappedMohrCoulomb with compressive failure only
# A single unit element is stretched by -1E-6m in z direction.
# with Lame lambda = 0.6E6 and Lame mu (shear) = 1E6
# stress_zz = -2.6 Pa
# stress_xx = -0.6 Pa
# stress_yy = -0.6 Pa
# compressive_strength is set to 0.5Pa
#
# stress_zz = -0.5
# plastic multiplier = 2.1/2.6 E-6
# stress_xx = -0.6 - (2.1/2.6*-0.6) = -0.115
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-1.0E-6*z'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = f0
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = f1
[../]
[./f2]
type = PointValue
point = '0 0 0'
variable = f2
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.6E6 1E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform18
csv = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_native.i
# apply repeated stretches in x, y and z directions, so that mean_stress = 0
# This maps out the yield surface in the octahedral plane for zero mean stress
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1.5E-6*x+2E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '2E-6*y*sin(2*t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-2E-6*z*(sin(t)+sin(2*t))'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = native
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = cdp
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 4
smoothing_tol = 1E-5
[../]
[]
[Executioner]
end_time = 100
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2_native
exodus = false
[./csv]
type = CSV
[../]
[]
modules/porous_flow/test/tests/dirackernels/injection_with_plasticity.i
# Example: Injection into a uniform aquifer 10 x 10 x 5 km
# Drucker-Prager deformation
# Darcy flow
gravity = -9.81
solid_density = 2350
fluid_density = 1000
porosity0 = 0.1
[Mesh]
type = GeneratedMesh
dim = 3
xmin = 0
xmax = 1e4
ymin = 0
ymax = 1e4
zmax = 0
zmin = -5e3
nx = 2
ny = 2
nz = 2
[]
[GlobalParams]
PorousFlowDictator = dictator
gravity = '0 0 ${gravity}'
displacements = 'disp_x disp_y disp_z'
strain_at_nearest_qp = true
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
thermal_expansion = 0 # Not doing a thermal simulation
bulk_modulus = 2E9
density0 = ${fluid_density}
viscosity = 5E-4
[../]
[../]
[]
[PorousFlowFullySaturated]
coupling_type = HydroMechanical
porepressure = pp
dictator_name = dictator
fp = simple_fluid
add_darcy_aux = false
add_stress_aux = false
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./pp]
scaling = 1E6
[./InitialCondition]
type = FunctionIC
function = ini_pp
[../]
[../]
[]
[Functions]
[./ini_stress]
type = ParsedFunction
value = '-${gravity} * z * (${solid_density} - ${fluid_density}) * (1.0 - ${porosity0})' # initial effective stress that should result from weight force
[../]
[./ini_pp]
type = ParsedFunction
value = '${gravity} * z * ${fluid_density} + 1E5'
[../]
[]
[BCs]
[./p_top]
type = FunctionDirichletBC
variable = pp
boundary = front
function = ini_pp
[../]
[./x_roller]
type = DirichletBC
variable = disp_x
boundary = 'left right'
value = 0
[../]
[./y_roller]
type = DirichletBC
variable = disp_y
boundary = 'top bottom'
value = 0
[../]
[./z_confined]
type = DirichletBC
variable = disp_z
boundary = 'back front'
value = 0
[../]
[]
[UserObjects]
[./pls_total_outflow_mass]
type = PorousFlowSumQuantity
[../]
# Cohesion
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 6.0E6
[../]
# Friction angle
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35.0
convert_to_radians = true
[../]
# Dilation angle
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 2
convert_to_radians = true
[../]
# Drucker-Prager objects
[./dp]
type = TensorMechanicsPlasticDruckerPragerHyperbolic
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
yield_function_tolerance = 1E-3
internal_constraint_tolerance = 1E-6
[../]
# Tensile strength
[./tens]
type = TensorMechanicsHardeningConstant
value = 3.0E6
[../]
# Compressive strength (cap on yield envelope)
[./compr_all]
type = TensorMechanicsHardeningConstant
value = 1E10
[../]
[]
[Materials]
[./strain]
type = ComputeIncrementalSmallStrain
eigenstrain_names = eigenstrain_all
[../]
[./eigenstrain_all]
type = ComputeEigenstrainFromInitialStress
initial_stress = 'ini_stress 0 0 0 ini_stress 0 0 0 ini_stress'
eigenstrain_name = eigenstrain_all
[../]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
bulk_modulus = 3.3333E9
shear_modulus = 2.5E9
[../]
[./dp_mat]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = tens
compressive_strength = compr_all
smoothing_tol = 1E5
yield_function_tol = 1E-3
tip_smoother = 0
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = dp_mat
[../]
# Permeability
[./permeability]
type = PorousFlowPermeabilityConst
permeability = '1E-13 0 0 0 1E-13 0 0 0 1E-13'
[../]
# Porosity
[./porosity]
type = PorousFlowPorosity
porosity_zero = ${porosity0}
biot_coefficient = 1.0
solid_bulk = 1.0 # Required but irrelevant when biot_coefficient is unity
mechanical = true
fluid = true
[../]
# Density of saturated rock
[./density]
type = PorousFlowTotalGravitationalDensityFullySaturatedFromPorosity
rho_s = ${solid_density}
[../]
[]
[DiracKernels]
[./pls]
type = PorousFlowPolyLineSink
variable = pp
SumQuantityUO = pls_total_outflow_mass
point_file = two_nodes.bh
function_of = pressure
fluid_phase = 0
p_or_t_vals = '0 1E7'
fluxes = '-1.59 -1.59'
[../]
[]
[Preconditioning]
[./usual]
type = SMP
full = true
[../]
[]
[Executioner]
solve_type = Newton
type = Transient
dt = 1E6
end_time = 1E6
nl_rel_tol = 1E-7
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_outer_tip.i
# apply repeated stretches in x, y and z directions, so that mean_stress = 0
# This maps out the yield surface in the octahedral plane for zero mean stress
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1.5E-6*x+2E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '2E-6*y*sin(2*t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-2E-6*z*(sin(t)+sin(2*t))'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = outer_tip
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = cdp
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 4
smoothing_tol = 1E-5
[../]
[]
[Executioner]
end_time = 100
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2_outer_tip
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform3.i
# Plastic deformation, tensile failure
# With Young = 10, poisson=0.25 (Lame lambda=4, mu=4)
# applying the following
# deformation to the zmax surface of a unit cube:
# disp_x = 4*t
# disp_y = 3*t
# disp_z = t
# should yield trial stress:
# stress_zz = 12*t
# stress_zx = 16*t
# stress_zy = 12*t
# Use tensile strength = 6, we should return to stress_zz = 6,
# and stress_xx = stress_yy = 2*t up to t=1 when the system is completely
# plastic, so these stress components will not change
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 4*t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 3*t
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 80
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 6
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 40
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3
csv = true
[]
modules/tensor_mechanics/test/tests/combined_creep_plasticity/combined_creep_plasticity.i
#
# This test is Example 2 from "A Consistent Formulation for the Integration
# of Combined Plasticity and Creep" by P. Duxbury, et al., Int J Numerical
# Methods in Engineering, Vol. 37, pp. 1277-1295, 1994.
#
# The problem is a one-dimensional bar which is loaded from yield to a value of twice
# the initial yield stress and then unloaded to return to the original stress. The
# bar must harden to the required yield stress during the load ramp, with no
# further yielding during unloading. The initial yield stress (sigma_0) is prescribed
# as 20 with a plastic strain hardening of 100. The mesh is a 1x1x1 cube with symmetry
# boundary conditions on three planes to provide a uniaxial stress field.
#
# In the PowerLawCreep model, the creep strain rate is defined by:
#
# edot = A(sigma)**n * exp(-Q/(RT)) * t**m
#
# The creep law specified in the paper, however, defines the creep strain rate as:
#
# edot = Ao * mo * (sigma)**n * t**(mo-1)
# with the creep parameters given by
# Ao = 1e-7
# mo = 0.5
# n = 5
#
# thus, input parameters for the test were specified as:
# A = Ao * mo = 1e-7 * 0.5 = 0.5e-7
# m = mo-1 = -0.5
# n = 5
# Q = 0
#
# The variation of load P with time is:
# P = 20 + 20t 0 < t < 1
# P = 40 - 40(t-1) 1 < t 1.5
#
# The analytic solution for total strain during the loading period 0 < t < 1 is:
#
# e_tot = (sigma_0 + 20*t)/E + 0.2*t + A * t**0.5 * sigma_0**n * [ 1 + (5/3)*t +
# + 2*t**2 + (10/7)*t**3 + (5/9)**t**4 + (1/11)*t**5 ]
#
# and during the unloading period 1 < t < 1.5:
#
# e_tot = (sigma_1 - 40*(t-1))/E + 0.2 + (4672/693) * A * sigma_0**n +
# A * sigma_0**n * [ t**0.5 * ( 32 - (80/3)*t + 16*t**2 - (40/7)*t**3
# + (10/9)*t**4 - (1/11)*t**5 ) - (11531/693) ]
#
# where sigma_1 is the stress at time t = 1.
#
# Assuming a Young's modulus (E) of 1000 and using the parameters defined above:
#
# e_tot(1) = 2.39734
# e_tot(1.5) = 3.16813
#
#
# The numerically computed solution is:
#
# e_tot(1) = 2.39718 (~0.006% error)
# e_tot(1.5) = 3.15555 (~0.40% error)
#
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy elastic_strain_yy creep_strain_yy plastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = ' 0 1 1.5'
y = '-20 -40 -20'
[../]
[./dts]
type = PiecewiseLinear
x = '0 0.5 1.0 1.5'
y = '0.015 0.015 0.005 0.005'
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = 1
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
youngs_modulus = 1e3
poissons_ratio = 0.3
[../]
[./creep_plas]
type = ComputeMultipleInelasticStress
block = 0
tangent_operator = elastic
inelastic_models = 'creep plas'
max_iterations = 50
absolute_tolerance = 1e-05
combined_inelastic_strain_weights = '0.0 1.0'
[../]
[./creep]
type = PowerLawCreepStressUpdate
block = 0
coefficient = 0.5e-7
n_exponent = 5
m_exponent = -0.5
activation_energy = 0
[../]
[./plas]
type = IsotropicPlasticityStressUpdate
block = 0
hardening_constant = 100
yield_stress = 20
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 6
nl_rel_tol = 1e-6
nl_abs_tol = 1e-10
l_tol = 1e-5
start_time = 0.0
end_time = 1.5
[./TimeStepper]
type = FunctionDT
function = dts
[../]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/multiple_two_parameter_plasticity/dp_then_wp.i
# Use ComputeMultipleInelasticStress with two inelastic models: CappedDruckerPrager and CappedWeakPlane.
# The relative_tolerance and absolute_tolerance parameters are set very large so that
# only one iteration is performed. This is the algorithm that FLAC uses to model
# jointed rocks, only Capped-Mohr-Coulomb is used instead of CappedDruckerPrager
#
# initial_stress = diag(1E3, 1E3, 1E3)
# The CappedDruckerPrager has tensile strength 3E2 and large cohesion,
# so the stress initially returns to diag(1E2, 1E2, 1E2)
# The CappedWeakPlane has tensile strength zero and large cohesion,
# so the stress returns to diag(1E2 - v/(1-v)*1E2, 1E2 - v/(1-v)*1E2, 0)
# where v=0.2 is the Poisson's ratio
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
eigenstrain_names = ini_stress
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = 0
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = 0
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 0
[../]
[]
[AuxVariables]
[./yield_fcn_dp]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn_wp]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_dp_auxk]
type = MaterialStdVectorAux
index = 1 # this is the tensile yield function - it should be zero
property = cdp_plastic_yield_function
variable = yield_fcn_dp
[../]
[./yield_fcn_wp_auxk]
type = MaterialStdVectorAux
index = 1 # this is the tensile yield function - it should be zero
property = cwp_plastic_yield_function
variable = yield_fcn_wp
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f_dp]
type = PointValue
point = '0 0 0'
variable = yield_fcn_dp
[../]
[./f_wp]
type = PointValue
point = '0 0 0'
variable = yield_fcn_wp
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 300
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[./wp_coh]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./wp_tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./wp_tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./wp_t_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./wp_c_strength]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
poissons_ratio = 0.2
youngs_modulus = 1E7
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '1E3 0 0 0 1E3 0 0 0 1E3'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
relative_tolerance = 1E4
absolute_tolerance = 2
inelastic_models = 'cdp cwp'
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
base_name = cdp
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-5
tip_smoother = 1E3
smoothing_tol = 1E3
[../]
[./cwp]
type = CappedWeakPlaneStressUpdate
base_name = cwp
cohesion = wp_coh
tan_friction_angle = wp_tanphi
tan_dilation_angle = wp_tanpsi
tensile_strength = wp_t_strength
compressive_strength = wp_c_strength
tip_smoother = 1E3
smoothing_tol = 1E3
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = dp_then_wp
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform6.i
# Plastic deformation, both tensile and shear failure
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 'if(t<30,0.2*t,6)'
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 'if(t<30,if(t<10,0,t),30-0.2*t)'
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = 'if(t<15,3*t,45)+if(t<30,0,45-3*t)'
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 5
smoothing_tol = 5
yield_function_tol = 1E-10
perfect_guess = false
[../]
[]
[Executioner]
end_time = 40
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform6
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update24.i
# MC update version, with only MohrCoulomb, cohesion=40, friction angle = 35deg, psi = 5deg, smoothing_tol = 0.5
# Tensile strength = 1MPa
# Lame lambda = 1E3. Lame mu = 1.3E3
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E2
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E8
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 4E1
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '100.1 0.1 -0.2 0.1 0.9 0 -0.2 0 1.1'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/cto25.i
# CappedDruckerPrager
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 0.8
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 0.4
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPragerHyperbolic
mc_cohesion = mc_coh
mc_friction_angle = phi
mc_dilation_angle = psi
yield_function_tolerance = 1E-11 # irrelevant here
internal_constraint_tolerance = 1E-9 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
lambda = 0.0
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '6 5 4 5 7 2 4 2 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = dp
[../]
[./dp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-11
tip_smoother = 1
smoothing_tol = 1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/combined/test/tests/power_law_creep/power_law_creep.i
# 1x1x1 unit cube with uniform pressure on top face
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 1000.0
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy creep_strain_xx creep_strain_yy creep_strain_zz elastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1'
y = '1 1'
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat_ie]
type = HeatConductionTimeDerivative
variable = temp
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = -10.0e6
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./temp_fix]
type = DirichletBC
variable = temp
boundary = 'bottom top'
value = 1000.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2e11
poissons_ratio = 0.3
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'power_law_creep'
tangent_operator = elastic
[../]
[./power_law_creep]
type = PowerLawCreepStressUpdate
coefficient = 1.0e-15
n_exponent = 4
activation_energy = 3.0e5
temperature = temp
[../]
[./thermal]
type = HeatConductionMaterial
specific_heat = 1.0
thermal_conductivity = 100.
[../]
[./density]
type = Density
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 20
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
l_tol = 1e-5
start_time = 0.0
end_time = 1.0
num_steps = 10
dt = 0.1
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/cwp03.i
# Capped weak-plane plasticity
# checking jacobian for tensile failure, with some shear
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 -2 0 0 1 -2 1 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 1
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
#petsc_options = '-snes_test_display'
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/tensile/small_deform6_update_version.i
# checking for small deformation
# A single element is incrementally stretched in the in the z direction
# This causes the return direction to be along the hypersurface sigma_II = sigma_III,
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '4*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = 'y*(t-0.5)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 'z*(t-0.5)'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform6_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/tensile/random_update.i
# Plasticity models:
# Planar tensile with strength = 1MPa
#
# Lame lambda = 1GPa. Lame mu = 1.3GPa
#
# A line of elements is perturbed randomly, and return to the yield surface at each quadpoint is checked
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1000
ny = 1234
nz = 1
xmin = 0
xmax = 1000
ymin = 0
ymax = 1234
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./int0]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./int0]
type = MaterialStdVectorAux
property = plastic_internal_parameter
factor = 1E6
index = 0
variable = int0
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[]
[Postprocessors]
[./tot_iters]
type = ElementIntegralMaterialProperty
mat_prop = plastic_NR_iterations
outputs = console
[../]
[./raw_f0]
type = ElementExtremeValue
variable = f0
outputs = console
[../]
[./raw_f1]
type = ElementExtremeValue
variable = f1
outputs = console
[../]
[./raw_f2]
type = ElementExtremeValue
variable = f2
outputs = console
[../]
[./iter]
type = ElementExtremeValue
variable = iter
outputs = console
[../]
[./f0]
type = FunctionValuePostprocessor
function = should_be_zero0_fcn
[../]
[./f1]
type = FunctionValuePostprocessor
function = should_be_zero1_fcn
[../]
[./f2]
type = FunctionValuePostprocessor
function = should_be_zero2_fcn
[../]
[]
[Functions]
[./should_be_zero0_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f0'
[../]
[./should_be_zero1_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f1'
[../]
[./should_be_zero2_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f2'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1E6
value_residual = 0
internal_limit = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '1E9 1.3E9'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 1E5
max_NR_iterations = 100
yield_function_tol = 1.0E-1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = random_update
exodus = false
[./csv]
type = CSV
[../]
[]
modules/combined/test/tests/power_law_hardening/PowerLawHardening.i
# This is a test of the isotropic power law hardening constitutive model.
# In this problem, a single Hex 8 element is fixed at the bottom and pulled at the top
# at a constant rate of 0.1.
# Before yield, stress = strain (=0.1*t) as youngs modulus is 1.0.
# The yield stress for this problem is 0.25 ( as strength coefficient is 0.5 and strain rate exponent is 0.5).
# Therefore, the material should start yielding at t = 2.5 seconds and then follow stress = K *pow(strain,n) or
# stress ~ 0.5*pow(0.1*t,0.5).
#
# This tensor mechanics version of the power law hardening plasticity model matches
# the solid mechanics version for this toy problem under exodiff limits
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Mesh]
type = GeneratedMesh
dim = 3
[]
[AuxVariables]
[./total_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t*(0.1)
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
strain = SMALL
incremental = true
generate_output = 'stress_yy'
[]
[]
[AuxKernels]
[./total_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yy
index_i = 1
index_j = 1
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1.0
poissons_ratio = 0.3
[../]
[./power_law_hardening]
type = IsotropicPowerLawHardeningStressUpdate
strength_coefficient = 0.5 #K
strain_hardening_exponent = 0.5 #n
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'power_law_hardening'
tangent_operator = elastic
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-ksp_snes_ew'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
end_time = 5.0
dt = 0.25
[]
[Postprocessors]
[./stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./strain_yy]
type = ElementAverageValue
variable = total_strain_yy
[../]
[]
[Outputs]
[./out]
type = Exodus
elemental_as_nodal = true
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform3.i
# Using CappedMohrCoulomb with tensile failure only
# checking for small deformation
# A single element is stretched by "ep" in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = sigma_II
# where sigma_I = (E_2222 + E_2200) * ep
# tensile_strength is set to 1Pa, smoothing_tol = 0.1Pa
# The smoothed yield function is
# yf = sigma_I + ismoother(0) - tensile_strength
# = sigma_I + (0.5 * smoothing_tol - smoothing_tol / Pi) - tensile_strength
# = sigma_I - 0.98183
#
# With zero Poisson's ratio, the return stress will be
# stress_00 = stress_22 = 0.98183
# with all other stress components being zero
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.25E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0.25E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform5.i
# Using CappedMohrCoulomb with tensile failure only
# A single element is incrementally stretched in the in the z and x directions
# This causes the return direction to be along the hypersurface sigma_III = 0
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
strain = finite
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '4*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 'z*(t-0.5)'
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform5
csv = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/random.i
# capped drucker-prager
# apply many random large deformations, checking that the algorithm returns correctly to
# the yield surface each time.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1000
ny = 125
nz = 1
xmin = 0
xmax = 1000
ymin = 0
ymax = 125
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./shear_yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./tensile_yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./compressive_yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./shear_yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = shear_yield_fcn
[../]
[./tensile_fcn_auxk]
type = MaterialStdVectorAux
index = 1
property = plastic_yield_function
variable = tensile_yield_fcn
[../]
[./compressive_yield_fcn_auxk]
type = MaterialStdVectorAux
index = 2
property = plastic_yield_function
variable = compressive_yield_fcn
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[]
[Postprocessors]
[./shear_max]
type = ElementExtremeValue
variable = shear_yield_fcn
outputs = 'console'
[../]
[./tensile_max]
type = ElementExtremeValue
variable = tensile_yield_fcn
outputs = 'console'
[../]
[./compressive_max]
type = ElementExtremeValue
variable = compressive_yield_fcn
outputs = 'console'
[../]
[./should_be_zero_shear]
type = FunctionValuePostprocessor
function = shear_should_be_zero_fcn
[../]
[./should_be_zero_compressive]
type = FunctionValuePostprocessor
function = compressive_should_be_zero_fcn
[../]
[./should_be_zero_tensile]
type = FunctionValuePostprocessor
function = tensile_should_be_zero_fcn
[../]
[./av_iter]
type = ElementAverageValue
variable = iter
outputs = 'console'
[../]
[]
[Functions]
[./shear_should_be_zero_fcn]
type = ParsedFunction
value = 'if(a<1E-3,0,a)'
vars = 'a'
vals = 'shear_max'
[../]
[./tensile_should_be_zero_fcn]
type = ParsedFunction
value = 'if(a<1E-3,0,a)'
vars = 'a'
vals = 'tensile_max'
[../]
[./compressive_should_be_zero_fcn]
type = ParsedFunction
value = 'if(a<1E-3,0,a)'
vars = 'a'
vals = 'compressive_max'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 1E3
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
yield_function_tolerance = 1 # irrelevant here
internal_constraint_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0.7E7 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = dp
perform_finite_strain_rotations = false
[../]
[./dp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-3
tip_smoother = 0.1E3
smoothing_tol = 0.1E3
max_NR_iterations = 1000
small_dilation = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = random
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update23.i
# MC update version, with only MohrCoulomb, cohesion=40, friction angle = 35deg, psi = 5deg, smoothing_tol = 0.5
# Tensile strength = 1MPa
# Lame lambda = 1E3. Lame mu = 1.3E3
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 4E1
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.5
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '10 12 -14 12 5 20 -14 20 8'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/except6.i
# Plastic deformation, tensile failure, with normal=(1,0,0)
# With Lame lambda=0 and Lame mu=1, applying the following
# deformation to the zmax surface of a unit cube:
# disp_x = t
# should yield trial stress:
# stress_xx = 2*t
# Use tensile strength = 1, we should return to stress_xx = 1
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = left
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = left
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = right
function = t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = right
function = 0
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = right
function = 0
[../]
[]
[AuxVariables]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = strainp_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = strainp_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = strainp_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = strainp_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = strainp_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = strainp_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = straint_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = straint_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = straint_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = straint_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = straint_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = straint_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 30
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 40
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakInclinedPlaneStressUpdate
normal_vector = '0 0 0'
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = except6
csv = true
[]
modules/tensor_mechanics/test/tests/tensile/small_deform_hard3_update_version.i
# checking for small deformation, with cubic hardening
# A single element is repeatedly stretched by in z direction
# tensile_strength is set to 1Pa, tensile_strength_residual = 0.5Pa, and limit value = 1E-5
# This allows the hardening of the tensile strength to be observed
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1.0
value_residual = 0.5
internal_0 = 0
internal_limit = 1E-5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 10
dt = 1.0
type = Transient
[]
[Outputs]
file_base = small_deform_hard3_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random3.i
# Using CappedMohrCoulomb with Mohr-Coulomb failure only
# Plasticity models:
# Cohesion = 1MPa
# Friction angle = dilation angle = 0.5
#
# Lame lambda = 1GPa. Lame mu = 1.3GPa
#
# A line of elements is perturbed randomly, and return to the yield surface at each quadpoint is checked
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1000
ny = 1234
nz = 1
xmin = 0
xmax = 1000
ymin = 0
ymax = 1234
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./f3]
order = CONSTANT
family = MONOMIAL
[../]
[./f4]
order = CONSTANT
family = MONOMIAL
[../]
[./f5]
order = CONSTANT
family = MONOMIAL
[../]
[./int0]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 6
variable = f0
[../]
[./f1]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 7
variable = f1
[../]
[./f2]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 8
variable = f2
[../]
[./f3]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 9
variable = f3
[../]
[./f4]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 10
variable = f4
[../]
[./f5]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 11
variable = f5
[../]
[./int0]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = int0
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[]
[Postprocessors]
[./tot_iters]
type = ElementIntegralMaterialProperty
mat_prop = plastic_NR_iterations
outputs = console
[../]
[./intnl_max]
type = ElementExtremeValue
variable = int0
outputs = console
[../]
[./raw_f0]
type = ElementExtremeValue
variable = f0
outputs = console
[../]
[./raw_f1]
type = ElementExtremeValue
variable = f1
outputs = console
[../]
[./raw_f2]
type = ElementExtremeValue
variable = f2
outputs = console
[../]
[./raw_f3]
type = ElementExtremeValue
variable = f3
outputs = console
[../]
[./raw_f4]
type = ElementExtremeValue
variable = f4
outputs = console
[../]
[./raw_f5]
type = ElementExtremeValue
variable = f5
outputs = console
[../]
[./iter]
type = ElementExtremeValue
variable = iter
outputs = console
[../]
[./f0]
type = FunctionValuePostprocessor
function = should_be_zero0_fcn
[../]
[./f1]
type = FunctionValuePostprocessor
function = should_be_zero1_fcn
[../]
[./f2]
type = FunctionValuePostprocessor
function = should_be_zero2_fcn
[../]
[./f3]
type = FunctionValuePostprocessor
function = should_be_zero3_fcn
[../]
[./f4]
type = FunctionValuePostprocessor
function = should_be_zero4_fcn
[../]
[./f5]
type = FunctionValuePostprocessor
function = should_be_zero5_fcn
[../]
[]
[Functions]
[./should_be_zero0_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f0'
[../]
[./should_be_zero1_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f1'
[../]
[./should_be_zero2_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f2'
[../]
[./should_be_zero3_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f3'
[../]
[./should_be_zero4_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f4'
[../]
[./should_be_zero5_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f5'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./coh]
type = TensorMechanicsHardeningCubic
value_0 = 1E6
value_residual = 0
internal_limit = 1
[../]
[./ang]
type = TensorMechanicsHardeningCubic
value_0 = 0.9
value_residual = 0.2
internal_limit = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '1E9 1.3E9'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 1E5
max_NR_iterations = 100
yield_function_tol = 1.0E-1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = random3
csv = true
[]
modules/porous_flow/test/tests/jacobian/phe01.i
# Capped weak-plane plasticity, Kernel = PorousFlowPlasticHeatEnergy
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
PorousFlowDictator = dictator
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./temperature]
[../]
[]
[ICs]
[./disp_x]
type = RandomIC
variable = disp_x
min = -0.1
max = 0.1
[../]
[./disp_y]
type = RandomIC
variable = disp_y
min = -0.1
max = 0.1
[../]
[./disp_z]
type = RandomIC
variable = disp_z
min = -0.1
max = 0.1
[../]
[./temp]
type = RandomIC
variable = temperature
min = 0.1
max = 0.2
[../]
[]
[Kernels]
[./phe]
type = PorousFlowPlasticHeatEnergy
variable = temperature
[../]
[./dummy_disp_x]
type = PorousFlowPlasticHeatEnergy
coeff = -1.3
variable = disp_x
[../]
[./dummy_disp_y]
type = PorousFlowPlasticHeatEnergy
coeff = 1.1
variable = disp_y
[../]
[./dummy_disp_z]
type = PorousFlowPlasticHeatEnergy
coeff = 0.2
variable = disp_z
[../]
[]
[UserObjects]
[./dictator]
type = PorousFlowDictator
porous_flow_vars = 'temperature disp_x disp_y disp_z'
number_fluid_phases = 0
number_fluid_components = 0
[../]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 3
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_0 = -2
internal_limit = 0
[../]
[]
[Materials]
[./temp]
type = PorousFlowTemperature
temperature = temperature
[../]
[./porosity]
type = PorousFlowPorosity
thermal = true
mechanical = true
porosity_zero = 0.3
thermal_expansion_coeff = 1.3
[../]
[./volstrain]
type = PorousFlowVolumetricStrain
[../]
[./phe]
type = ComputePlasticHeatEnergy
[../]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 0 0 0 1 0 1 -1.5'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-10
perfect_guess = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update17.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to close to the edge of compressive yield
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '1 -0.1 -0.2 -0.1 -15 0.3 -0.2 0.3 -14'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update11.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_min = 1 plane
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 0 0 0 0 -2'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform9.i
# apply a shear deformation to observe shear hardening.
# Shear gives q_trial = 2*Sqrt(20), p_trial=0
# The solution given by MOOSE correctly satisfies the equations
# 0 = f = q + p*tan(phi) - coh
# 0 = p - p_trial + ga * Ezzzz * dg/dp
# 0 = q - q_trial + ga * Ezxzx * dg/dq
# Here dg/dp = tan(psi), and dg/dq = 1
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 't'
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = '2*t'
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = '0'
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1E8
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 1E8
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-3
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform9
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform_inclined5.i
# Plastic deformation, shear failure, with inclined normal direction = (1, 0, 0)
# With Young = 10, poisson=0.25 (Lame lambda=4, mu=4)
# applying the following
# deformation to the xmax surface of a unit cube:
# disp_x = 5*t/6
# disp_y = 6*t
# disp_z = 8*t
# should yield trial stress:
# stress_xx = 10*t
# stress_xz = 32*t
# stress_xy = 24*t (so q_trial = 40*t)
# Use tan(friction_angle) = 0.5 and tan(dilation_angle) = 1/6, and cohesion=20,
# the system should return to p=0, q=20, ie stress_xx=0, stress_zx=16,
# stress_yx=12 on the first time step (t=1)
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = left
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = left
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = right
function = 5*t/6
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = right
function = 6*t
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = right
function = 8*t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakInclinedPlaneStressUpdate
normal_vector = '1 0 0'
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform_inclined5
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update4.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 -1 0.5 1 1.9 0 0.5 0 3'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/tensile/small_deform3_update_version.i
# Using TensileStressUpdate
# checking for small deformation
# A single element is stretched by "ep" in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = sigma_II
# where sigma_I = (E_2222 + E_2200) * ep
# tensile_strength is set to 1Pa, smoothing_tol = 0.1Pa
# The smoothed yield function is
# yf = sigma_I + ismoother(0) - tensile_strength
# = sigma_I + (0.5 * smoothing_tol - smoothing_tol / Pi) - tensile_strength
# = sigma_I - 0.98183
#
# With zero Poisson's ratio, the return stress will be
# stress_00 = stress_22 = 0.98183
# with all other stress components being zero
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.25E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0.25E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/pull_push.i
# A column of elements has its bottom pulled down, and then pushed up again.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 2
xmin = -10
xmax = 10
ymin = -10
ymax = 10
zmin = -100
zmax = 0
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
[../]
[]
[BCs]
[./no_x2]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./no_x1]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./no_y1]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./no_y2]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./topz]
type = DirichletBC
variable = disp_z
boundary = front
value = 0
[../]
[./bottomz]
type = FunctionDirichletBC
variable = disp_z
boundary = back
function = 'if(t>1,-2.0+t,-t)'
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[UserObjects]
[./coh_irrelevant]
type = TensorMechanicsHardeningCubic
value_0 = 2E6
value_residual = 1E6
internal_limit = 0.01
[../]
[./tanphi]
type = TensorMechanicsHardeningCubic
value_0 = 0.5
value_residual = 0.2
internal_limit = 0.01
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 2E6
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1E8
value_residual = 0.0
internal_limit = 0.01
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 6.4e9
shear_modulus = 6.4e9 # young 16MPa, Poisson 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh_irrelevant
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 10
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-2
perfect_guess = false
min_step_size = 1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options = '-snes_converged_reason -snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
line_search = bt
nl_abs_tol = 1E1
nl_rel_tol = 1e-5
l_tol = 1E-10
l_max_its = 100
nl_max_its = 100
end_time = 3.0
dt = 0.1
type = Transient
[]
[Outputs]
file_base = pull_push
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/visco/gen_kv_driving.i
# Represents a unique Maxwell module with E = 10GPa and eta = 10 days with an imposed eigenstrain alpha = 0.001.
# The behavior is set up so that the creep strain is driven by both the elastic stress and the internal
# stress induced by the eigenstrain (E * alpha).
#
# In this test, the specimen is free of external stress (sigma = 0) so the creep deformation only derives from
# the eigenstrain. The total strain to be expected is:
# epsilon = alpha * (1 + t / eta)
# Both the stress and the elastic strain are 0.
#
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
variable = stress_xx
rank_two_tensor = stress
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./strain_xx]
type = RankTwoAux
variable = strain_xx
rank_two_tensor = total_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
variable = creep_strain_xx
rank_two_tensor = creep_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[]
[BCs]
[./symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[../]
[./symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[../]
[./symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[]
[Materials]
[./eigen]
type = ComputeEigenstrain
eigenstrain_name = eigen_true
eigen_base = '1e-3 1e-3 1e-3 0 0 0'
[../]
[./kelvin_voigt]
type = GeneralizedKelvinVoigtModel
creep_modulus = ''
creep_viscosity = '10'
poisson_ratio = 0.2
young_modulus = 10e9
driving_eigenstrain = eigen_true
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
[../]
[./creep]
type = LinearViscoelasticStressUpdate
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = 'eigen_true'
[../]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = kelvin_voigt
[../]
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./strain_xx]
type = ElementAverageValue
variable = strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 50
l_tol = 1e-8
nl_max_its = 20
nl_rel_tol = 1e-11
nl_abs_tol = 1e-8
dtmin = 0.01
end_time = 100
[./TimeStepper]
type = LogConstantDT
first_dt = 0.1
log_dt = 0.1
[../]
[]
[Outputs]
file_base = gen_kv_driving_out
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform17.i
# Using CappedMohrCoulomb with compressive failure only
# A single element is incrementally compressed
# This causes the return direction to be along the hypersurface sigma_II = sigma_III
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-2*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-2*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-0.4*z*(t+2*t*t)'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 3
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform17
csv = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_outer_tip.i
# apply repeated stretches in x z directions, and smaller stretches along the y direction,
# so that sigma_I = sigma_II,
# which means that lode angle = 30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-1.7E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = outer_tip
yield_function_tolerance = 1 # irrelevant here
internal_constraint_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 8
smoothing_tol = 1E-7
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3_outer_tip
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/pull_and_shear.i
# Dynamic problem with plasticity.
# A column of material (not subject to gravity) has the z-displacement
# of its sides fixed, but the centre of its bottom side is pulled
# downwards. This causes failure in the bottom elements.
#
# The problem utilises damping in the following way.
# The DynamicStressDivergenceTensors forms the residual
# integral grad(stress) + zeta*grad(stress-dot)
# = V/L * elasticity * (du/dx + zeta * dv/dx)
# where V is the elemental volume, and L is the length-scale,
# and u is the displacement, and v is the velocity.
# The InertialForce forms the residual
# integral density * (accel + eta * velocity)
# = V * density * (a + eta * v)
# where a is the acceleration.
# So, a damped oscillator description with both these
# kernels looks like
# 0 = V * (density * a + density * eta * v + elasticity * zeta * v / L^2 + elasticity / L^2 * u)
# Critical damping is when the coefficient of v is
# 2 * sqrt(density * elasticity / L^2)
# In the case at hand, density=1E4, elasticity~1E10 (Young is 16GPa),
# L~1 to 10 (in the horizontal or vertical direction), so this coefficient ~ 1E7 to 1E6.
# Choosing eta = 1E3 and zeta = 1E-2 gives approximate critical damping.
# If zeta is high then steady-state is achieved very quickly.
#
# In the case of plasticity, the effective stiffness of the elements
# is significantly less. Therefore, the above parameters give
# overdamping.
#
# This simulation is a nice example of the irreversable and non-uniqueness
# of simulations involving plasticity. The result depends on the damping
# parameters and the time stepping.
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 10
ny = 1
nz = 5
bias_z = 1.5
xmin = -10
xmax = 10
ymin = -10
ymax = 10
zmin = -100
zmax = 0
[]
[bottomz_middle]
type = BoundingBoxNodeSetGenerator
new_boundary = bottomz_middle
bottom_left = '-1 -1500 -105'
top_right = '1 1500 -95'
input = generated_mesh
[]
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
beta = 0.25 # Newmark time integration
gamma = 0.5 # Newmark time integration
eta = 1E3 #0.3E4 # higher values mean more damping via density
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./DynamicTensorMechanics] # zeta*K*vel + K * disp
zeta = 1E-2 # higher values mean more damping via stiffness
alpha = 0 # better nonlinear convergence than for alpha>0
[../]
[./inertia_x] # M*accel + eta*M*vel
type = InertialForce
use_displaced_mesh = false
variable = disp_x
velocity = vel_x
acceleration = accel_x
[../]
[./inertia_y]
type = InertialForce
use_displaced_mesh = false
variable = disp_y
velocity = vel_y
acceleration = accel_y
[../]
[./inertia_z]
type = InertialForce
use_displaced_mesh = false
variable = disp_z
velocity = vel_z
acceleration = accel_z
[../]
[]
[BCs]
[./no_x2]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./no_x1]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./no_y1]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./no_y2]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./z_fixed_sides_xmin]
type = DirichletBC
variable = disp_z
boundary = left
value = 0
[../]
[./z_fixed_sides_xmax]
type = DirichletBC
variable = disp_z
boundary = right
value = 0
[../]
[./bottomz]
type = FunctionDirichletBC
variable = disp_z
boundary = bottomz_middle
function = max(-10*t,-10)
[../]
[]
[AuxVariables]
[./accel_x]
[../]
[./vel_x]
[../]
[./accel_y]
[../]
[./vel_y]
[../]
[./accel_z]
[../]
[./vel_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./accel_x] # Calculates and stores acceleration at the end of time step
type = NewmarkAccelAux
variable = accel_x
displacement = disp_x
velocity = vel_x
execute_on = timestep_end
[../]
[./vel_x] # Calculates and stores velocity at the end of the time step
type = NewmarkVelAux
variable = vel_x
acceleration = accel_x
execute_on = timestep_end
[../]
[./accel_y]
type = NewmarkAccelAux
variable = accel_y
displacement = disp_y
velocity = vel_y
execute_on = timestep_end
[../]
[./vel_y]
type = NewmarkVelAux
variable = vel_y
acceleration = accel_y
execute_on = timestep_end
[../]
[./accel_z]
type = NewmarkAccelAux
variable = accel_z
displacement = disp_z
velocity = vel_z
execute_on = timestep_end
[../]
[./vel_z]
type = NewmarkVelAux
variable = vel_z
acceleration = accel_z
execute_on = timestep_end
[../]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 1E80
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '6.4E9 6.4E9' # young 16MPa, Poisson 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 1E6
smoothing_tol = 0.5E6
yield_function_tol = 1E-2
[../]
[./density]
type = GenericConstantMaterial
block = 0
prop_names = density
prop_values = 1E4
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options = '-snes_converged_reason -snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
line_search = bt
nl_abs_tol = 1E1
nl_rel_tol = 1e-5
l_tol = 1E-10
l_max_its = 100
nl_max_its = 100
num_steps = 8
dt = 0.1
type = Transient
[]
[Outputs]
file_base = pull_and_shear
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/multiple_two_parameter_plasticity/cycled_dp_then_wp.i
# Use ComputeMultipleInelasticStress with two inelastic models: CappedDruckerPrager and CappedWeakPlane.
# The relative_tolerance and absolute_tolerance parameters are set very large so that
# only one iteration is performed. This is the algorithm that FLAC uses to model
# jointed rocks, only Capped-Mohr-Coulomb is used instead of CappedDruckerPrager
#
# In this test "cycle_models=true" so that in the first timestep only
# CappedDruckerPrager is used, while in the second timestep only
# CappedWeakPlane is used.
#
# initial_stress = diag(1E3, 1E3, 1E3)
# The CappedDruckerPrager has tensile strength 3E2 and large cohesion,
# so the stress initially returns to diag(1E2, 1E2, 1E2)
# The CappedWeakPlane has tensile strength zero and large cohesion,
# so the stress returns to diag(1E2 - v/(1-v)*1E2, 1E2 - v/(1-v)*1E2, 0)
# where v=0.2 is the Poisson's ratio
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
eigenstrain_names = ini_stress
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = 0
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = 0
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 0
[../]
[]
[AuxVariables]
[./yield_fcn_dp]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn_wp]
order = CONSTANT
family = MONOMIAL
[../]
[./tensile_cdp]
order = CONSTANT
family = MONOMIAL
[../]
[./tensile_cwp]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_dp_auxk]
type = MaterialStdVectorAux
index = 1 # this is the tensile yield function - it should be zero
property = cdp_plastic_yield_function
variable = yield_fcn_dp
[../]
[./yield_fcn_wp_auxk]
type = MaterialStdVectorAux
index = 1 # this is the tensile yield function - it should be zero
property = cwp_plastic_yield_function
variable = yield_fcn_wp
[../]
[./tensile_cdp]
type = MaterialStdVectorAux
index = 1
property = cdp_plastic_internal_parameter
variable = tensile_cdp
[../]
[./tensile_cwp]
type = MaterialStdVectorAux
index = 1
property = cwp_plastic_internal_parameter
variable = tensile_cwp
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./i_cdp]
type = PointValue
point = '0 0 0'
variable = tensile_cdp
[../]
[./i_cwp]
type = PointValue
point = '0 0 0'
variable = tensile_cwp
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 300
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[./wp_coh]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[./wp_tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./wp_tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./wp_t_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./wp_c_strength]
type = TensorMechanicsHardeningConstant
value = 1E4
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
poissons_ratio = 0.2
youngs_modulus = 1.0
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '1E3 0 0 0 1E3 0 0 0 1E3'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
relative_tolerance = 1E4
absolute_tolerance = 2
inelastic_models = 'cdp cwp'
perform_finite_strain_rotations = false
cycle_models = true
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
base_name = cdp
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-5
tip_smoother = 1E3
smoothing_tol = 1E3
[../]
[./cwp]
type = CappedWeakPlaneStressUpdate
base_name = cwp
cohesion = wp_coh
tan_friction_angle = wp_tanphi
tan_dilation_angle = wp_tanpsi
tensile_strength = wp_t_strength
compressive_strength = wp_c_strength
tip_smoother = 1E3
smoothing_tol = 1E3
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = cycled_dp_then_wp
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform2.i
# Plastic deformation, tensile failure
# With Lame lambda=0 and Lame mu=1, applying the following
# deformation to the zmax surface of a unit cube:
# disp_z = t
# should yield trial stress:
# stress_zz = 2*t
# Use tensile strength = 1, we should return to stress_zz = 1
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 0
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 0
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 30
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 40
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/cto26.i
# CappedDruckerPrager
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 2
internal_limit = 100
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 5
value_residual = 3
internal_limit = 100
[../]
[./mc_coh]
type = TensorMechanicsHardeningCubic
value_0 = 10
value_residual = 1
internal_limit = 100
[../]
[./phi]
type = TensorMechanicsHardeningCubic
value_0 = 0.8
value_residual = 0.4
internal_limit = 50
[../]
[./psi]
type = TensorMechanicsHardeningCubic
value_0 = 0.4
value_residual = 0
internal_limit = 10
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPragerHyperbolic
mc_cohesion = mc_coh
mc_friction_angle = phi
mc_dilation_angle = psi
yield_function_tolerance = 1E-11 # irrelevant here
internal_constraint_tolerance = 1E-9 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
lambda = 0.1
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '6 5 4 5 7 2 4 2 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = dp
[../]
[./dp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-11
tip_smoother = 1
smoothing_tol = 1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/cwp04.i
# Capped weak-plane plasticity
# checking jacobian for tensile failure, with some shear
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 0 0 0 1 0 1 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 1
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
#petsc_options = '-snes_test_display'
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/throw_test.i
# Illustrates throwing an Exception from a Material. In this case we
# don't actually recover from the segfault (so it is a RunException
# test) but in practice one could do so. The purpose of this test is
# to ensure that exceptions can be thrown from Materials with stateful
# material properties without reading/writing to/from uninitialized
# memory.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 0
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 0
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = t
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1
[../]
[./t_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 2
internal_limit = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 1
tip_smoother = 5
smoothing_tol = 5
yield_function_tol = 1E-10
[../]
[]
[Executioner]
end_time = 1
dt = 1
dtmin = 1
type = Transient
[]
[Outputs]
file_base = SEGFAULT
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/pull_and_shear_1step.i
# Part of the bottom (minimum z) is pulled down by a Preset displacement
# This causes tensile failure in the elements immediately above.
# Because only the bottom row of elements ever fail, and because these
# fail in the first nonlinear step, Moose correctly converges in
# 1 nonlinear step, despite this problem being inelastic.
# (If the problem had lower cohesion, then the top row would also
# fail, but in the second nonlinear step, and so the simulation
# would require at least two nonlinear steps.)
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 1
nz = 2
xmin = -10
xmax = 10
ymin = -10
ymax = 10
zmin = -100
zmax = 0
[]
[bottomz_middle]
type = BoundingBoxNodeSetGenerator
new_boundary = bottomz_middle
bottom_left = '-1 -15 -105'
top_right = '1 15 -95'
input = generated_mesh
[]
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
[../]
[]
[BCs]
[./no_x2]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./no_x1]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./no_y1]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./no_y2]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./z_fixed_sides_xmin]
type = DirichletBC
variable = disp_z
boundary = left
value = 0
[../]
[./z_fixed_sides_xmax]
type = DirichletBC
variable = disp_z
boundary = right
value = 0
[../]
[./bottomz]
type = FunctionDirichletBC
variable = disp_z
boundary = bottomz_middle
function = -1
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[UserObjects]
[./coh_irrelevant]
type = TensorMechanicsHardeningCubic
value_0 = 1E60
value_residual = 1E60
internal_limit = 0.01E8
[../]
[./tanphi]
type = TensorMechanicsHardeningCubic
value_0 = 0.5
value_residual = 0.2
internal_limit = 0.01E8
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1E80
value_residual = 1E80
internal_limit = 0.01
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '6.4E9 6.4E9' # young 16MPa, Poisson 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh_irrelevant
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 1
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-2
perfect_guess = true
min_step_size = 1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options = '-snes_converged_reason -snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
line_search = bt
nl_abs_tol = 1E1
nl_rel_tol = 1e-5
l_tol = 1E-10
l_max_its = 100
nl_max_its = 100
end_time = 1.0
dt = 1.0
type = Transient
[]
[Outputs]
file_base = pull_and_shear_1step
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random5.i
# Using CappedMohrCoulomb
# Plasticity models:
# Tensile strength = 1.5
# Compressive strength = 3.0
# Cohesion = 1.0
# Friction angle = dilation angle = 20deg
#
# Young = 1, Poisson = 0.3
#
# A line of elements is perturbed randomly, and return to the yield surface at each quadpoint is checked
[Mesh]
type = GeneratedMesh
dim = 3
nx = 100
ny = 12
nz = 1
xmin = 0
xmax = 100
ymin = 0
ymax = 12
zmin = 0
zmax = 1
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./Smax]
order = CONSTANT
family = MONOMIAL
[../]
[./Smid]
order = CONSTANT
family = MONOMIAL
[../]
[./Smin]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./Smax]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = Smax
scalar_type = MaxPrincipal
[../]
[./Smid]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = Smid
scalar_type = MidPrincipal
[../]
[./Smin]
type = RankTwoScalarAux
rank_two_tensor = stress
variable = Smin
scalar_type = MinPrincipal
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1.5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 3.0
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1.0
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 3
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 100
poissons_ratio = 0.3
[../]
[./strain]
type = ComputeFiniteStrain
displacements = 'disp_x disp_y disp_z'
[../]
[./capped_mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 0.2
yield_function_tol = 1.0E-12
max_NR_iterations = 1000
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = capped_mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = random5
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/beam.i
# A beam with its ends fully clamped
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 10
nz = 10
xmin = -10
xmax = 10
ymin = -10
ymax = 10
zmin = -50
zmax = 0
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
[../]
[./gravity_y]
type = Gravity
use_displaced_mesh = false
variable = disp_y
value = -10
[../]
[]
[BCs]
[./zmax_xfixed]
type = DirichletBC
variable = disp_x
boundary = front
value = 0
[../]
[./zmax_yfixed]
type = DirichletBC
variable = disp_y
boundary = front
value = 0
[../]
[./zmax_zfixed]
type = DirichletBC
variable = disp_z
boundary = front
value = 0
[../]
[./zmin_xfixed]
type = DirichletBC
variable = disp_x
boundary = back
value = 0
[../]
[./zmin_yfixed]
type = DirichletBC
variable = disp_y
boundary = back
value = 0
[../]
[./zmin_zfixed]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[UserObjects]
[./coh_irrelevant]
type = TensorMechanicsHardeningCubic
value_0 = 2E6
value_residual = 2E6
internal_limit = 0.01
[../]
[./tanphi]
type = TensorMechanicsHardeningCubic
value_0 = 0.5
value_residual = 0.5
internal_limit = 0.01
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningCubic
value_0 = 0
value_residual = 0
internal_limit = 0.1
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1E80
value_residual = 0.0
internal_limit = 0.01
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '6.4E9 6.4E9' # young 16MPa, Poisson 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh_irrelevant
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 1000
tip_smoother = 1E5
smoothing_tol = 1E5
yield_function_tol = 1E-5
perfect_guess = true
min_step_size = 0.1
[../]
[./density]
type = GenericFunctionMaterial
block = 0
prop_names = density
prop_values = 1E3*t
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
#petsc_options = '-snes_converged_reason -snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
line_search = bt
nl_abs_tol = 1E-2
nl_rel_tol = 1e-15
l_tol = 1E-10
l_max_its = 100
nl_max_its = 100
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = beam
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/except1.i
# Exception: incorrect userobject types
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = -0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E6'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
modules/tensor_mechanics/test/tests/jacobian/cwp01.i
# Capped weak-plane plasticity
# checking jacobian for a fully-elastic situation
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[ICs]
[./disp_x]
type = RandomIC
variable = disp_x
min = -0.1
max = 0.1
[../]
[./disp_y]
type = RandomIC
variable = disp_y
min = -0.1
max = 0.1
[../]
[./disp_z]
type = RandomIC
variable = disp_z
min = -0.1
max = 0.1
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 0
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '1 2 3 2 -4 -5 3 -5 2'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 1
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/except3.i
# Exception: incorrect userobject types
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.05
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E6'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_inner_tip.i
# apply repeated stretches in x, y and z directions, so that mean_stress = 0
# This maps out the yield surface in the octahedral plane for zero mean stress
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1.5E-6*x+2E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '2E-6*y*sin(2*t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-2E-6*z*(sin(t)+sin(2*t))'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = inner_tip
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = cdp
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 4
smoothing_tol = 1E-5
[../]
[]
[Executioner]
end_time = 100
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2_inner_tip
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/visco/visco_finite_strain.i
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
variable = stress_xx
rank_two_tensor = stress
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./strain_xx]
type = RankTwoAux
variable = strain_xx
rank_two_tensor = total_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
variable = creep_strain_xx
rank_two_tensor = creep_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[]
[BCs]
[./symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[../]
[./symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[../]
[./symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[./axial_load]
type = NeumannBC
variable = disp_x
boundary = right
value = 10e6
[../]
[]
[Materials]
[./kelvin_voigt]
type = GeneralizedKelvinVoigtModel
creep_modulus = '10e9 10e9'
creep_viscosity = '1 10'
poisson_ratio = 0.2
young_modulus = 10e9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
[../]
[./creep]
type = LinearViscoelasticStressUpdate
[../]
[./strain]
type = ComputeFiniteStrain
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = kelvin_voigt
[../]
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./strain_xx]
type = ElementAverageValue
variable = strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 100
l_tol = 1e-8
nl_max_its = 50
nl_rel_tol = 1e-8
nl_abs_tol = 1e-8
dtmin = 0.01
end_time = 100
[./TimeStepper]
type = LogConstantDT
first_dt = 0.1
log_dt = 0.1
[../]
[]
[Outputs]
file_base = visco_finite_strain_out
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update7.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to close to the edge of tensile yield
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-1 0.1 0.2 0.1 15 -0.3 0.2 -0.3 14'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_lode_zero.i
# apply repeated stretches in x, y and z directions, so that mean_stress = 0
# This maps out the yield surface in the octahedral plane for zero mean stress
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1.5E-6*x+2E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '2E-6*y*sin(2*t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-2E-6*z*(sin(t)+sin(2*t))'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = lode_zero
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
lambda = 0.0
shear_modulus = 1.0e7
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = cdp
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 4
smoothing_tol = 1E-5
[../]
[]
[Executioner]
end_time = 100
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2_lode_zero
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform19.i
# Using CappedMohrCoulomb with compressive failure only
# A single unit element is stretched in a complicated way
# that the trial stress is
#
# -1.2 -2.0 -0.8
# -2.0 4.4 0
# -0.8 0 2.8
#
# This has eigenvalues
# la = {-1.963, 2.89478, 5.06822}
# and eigenvectors
# {0.94197, 0.296077, 0.158214}
# {-0.116245, -0.154456, 0.981137},
# {-0.314929, 0.942593, 0.111075},
#
# The compressive strength is 0.5 and Young=1 and Poisson=0.25.
# The return-map algorithm should return to stress_min = -0.5
# This is an increment of 1.463, so stress_mid and stress_max
# should both increase by 1.463 v/(1-v) = 0.488, giving
# stress_mid = 3.382
# stress_max = 5.556
#
# E_22 = E(1-v)/(1+v)/(1-2v)=1.2 and E_02 = E_22 v/(1-v)
# gamma_shear = ((smax-smin)^trial - (smax-smin)) / (E_22 - E_02)
# = ((2v-1)/(1-v)) * (smin^trial - smin) / (E_22(1 - 2v)/(1-v))
# = -(smin^trial - smin) / E_22
# Using psi = 30deg, sin(psi) = 1/2
# the shear correction to the tensile internal parameter is
# gamma_shear (E_22 + E_20) sin(psi) = gamma_shear E_22 sin(psi) / (1 - v)
# = -(smin^trial - smin) / (1 - v) / 2
# Then the tensile internal parameter is
# (1 - v) * (reduction_of_(max+min)_principal - gamma_shear * E_22 / (1-v) / 2) / E_22
# = -1.829
#
# The final stress is
#
# {0.15, -1.7, -0.65},
# {-1.7, 4.97, 0.046},
# {-0.65, 0.046, 3.3}
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-(3*x+2*y+z)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-(3*x-4*y)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-(x-2*z)'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = f0
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = f1
[../]
[./f2]
type = PointValue
point = '0 0 0'
variable = f2
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1
poissons_ratio = 0.25
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.001
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform19
csv = true
[]
modules/combined/test/tests/phase_field_fracture/crack2d_computeCrackedStress_finitestrain_plastic.i
#This input uses PhaseField-Nonconserved Action to add phase field fracture bulk rate kernels
[Mesh]
[gen]
type = GeneratedMeshGenerator
dim = 2
nx = 40
ny = 20
ymax = 0.5
[]
[./noncrack]
type = BoundingBoxNodeSetGenerator
new_boundary = noncrack
bottom_left = '0.5 0 0'
top_right = '1 0 0'
input = gen
[../]
[]
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[AuxVariables]
[./strain_yy]
family = MONOMIAL
order = CONSTANT
[../]
[./elastic_strain_yy]
family = MONOMIAL
order = CONSTANT
[../]
[./plastic_strain_yy]
family = MONOMIAL
order = CONSTANT
[../]
[./uncracked_stress_yy]
family = MONOMIAL
order = CONSTANT
[../]
[]
[Modules]
[./TensorMechanics]
[./Master]
[./All]
add_variables = true
strain = FINITE
planar_formulation = PLANE_STRAIN
additional_generate_output = 'stress_yy vonmises_stress'
strain_base_name = uncracked
[../]
[../]
[../]
[./PhaseField]
[./Nonconserved]
[./c]
free_energy = E_el
kappa = kappa_op
mobility = L
[../]
[../]
[../]
[]
[Kernels]
[./solid_x]
type = PhaseFieldFractureMechanicsOffDiag
variable = disp_x
component = 0
c = c
[../]
[./solid_y]
type = PhaseFieldFractureMechanicsOffDiag
variable = disp_y
component = 1
c = c
[../]
[./off_disp]
type = AllenCahnElasticEnergyOffDiag
variable = c
displacements = 'disp_x disp_y'
mob_name = L
[../]
[]
[AuxKernels]
[./strain_yy]
type = RankTwoAux
variable = strain_yy
rank_two_tensor = uncracked_mechanical_strain
index_i = 1
index_j = 1
execute_on = TIMESTEP_END
[../]
[./elastic_strain_yy]
type = RankTwoAux
variable = elastic_strain_yy
rank_two_tensor = uncracked_elastic_strain
index_i = 1
index_j = 1
execute_on = TIMESTEP_END
[../]
[./plastic_strain_yy]
type = RankTwoAux
variable = plastic_strain_yy
rank_two_tensor = uncracked_plastic_strain
index_i = 1
index_j = 1
execute_on = TIMESTEP_END
[../]
[./uncracked_stress_yy]
type = RankTwoAux
variable = uncracked_stress_yy
rank_two_tensor = uncracked_stress
index_i = 1
index_j = 1
execute_on = TIMESTEP_END
[../]
[]
[BCs]
[./ydisp]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = 't'
[../]
[./yfix]
type = DirichletBC
variable = disp_y
boundary = noncrack
value = 0
[../]
[./xfix]
type = DirichletBC
variable = disp_x
boundary = right
value = 0
[../]
[]
[Functions]
[./hf]
type = PiecewiseLinear
x = '0 0.001 0.003 0.023'
y = '0.85 1.0 1.25 1.5'
[../]
[]
[Materials]
[./pfbulkmat]
type = GenericConstantMaterial
prop_names = 'gc_prop l visco'
prop_values = '1e-3 0.05 5e-3'
[../]
[./elasticity_tensor]
type = ComputeElasticityTensor
C_ijkl = '120.0 80.0'
fill_method = symmetric_isotropic
base_name = uncracked
[../]
[./isotropic_plasticity]
type = IsotropicPlasticityStressUpdate
yield_stress = 0.85
hardening_function = hf
base_name = uncracked
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'isotropic_plasticity'
base_name = uncracked
[../]
[./cracked_stress]
type = ComputeCrackedStress
c = c
F_name = E_el
use_current_history_variable = true
uncracked_base_name = uncracked
finite_strain_model = true
[../]
[]
[Postprocessors]
[./av_stress_yy]
type = ElementAverageValue
variable = stress_yy
[../]
[./av_strain_yy]
type = SideAverageValue
variable = disp_y
boundary = top
[../]
[./av_uncracked_stress_yy]
type = ElementAverageValue
variable = uncracked_stress_yy
[../]
[./max_c]
type = ElementExtremeValue
variable = c
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
solve_type = PJFNK
petsc_options_iname = '-pc_type -pc_factor_mat_solving_package'
petsc_options_value = 'lu superlu_dist'
nl_rel_tol = 1e-8
l_tol = 1e-4
l_max_its = 100
nl_max_its = 10
dt = 2.0e-5
num_steps = 2
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/except5.i
# Exception: incorrect userobject types
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = -2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E6'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform12.i
# Using CappedMohrCoulomb with compressive failure only
# checking for small deformation
# A single element is stretched equally in all directions.
# This causes the return direction to be along the sigma_I = sigma_II = sigma_III line
# compressive_strength is set to 1Pa, and smoothing_tol = 0.1Pa
# The smoothed yield function comes from two smoothing operations.
# The first is on sigma_I and sigma_II (sigma_I >= sigma_II >= sigma_III):
# yf = -sigma_I + ismoother(0) - compressive_strength
# = -sigma_I + (0.5 * smoothing_tol - smoothing_tol / Pi) - compressive_strength
# = -sigma_I + 0.018169 - 1
# The second has the argument of ismoother equal to -0.018169.
# ismoother(-0.018169) = 0.5 * (-0.018169 + 0.1) - 0.1 * cos (0.5 * Pi * -0.018169 / 0.1) / Pi
# = 0.010372
# So the final yield function is
# yf = -sigma_I + 0.018169 + 0.010372 - 1 = -sigma_I + 0.028541 - 1
# However, because of the asymmetry in smoothing (the yield function is obtained
# by first smoothing -sigma_I-cs and -sigma_II-cs, and then by smoothing this
# result with -sigma_III-cs) the result is sigma_I > sigma_II = sigma_III
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-1E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform12
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update22.i
# MC update version, with only MohrCoulomb, cohesion=10, friction angle = 60, psi = 5, smoothing_tol = 1
# Lame lambda = 0.5. Lame mu = 1
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 60
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.5
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '6 5 4 5 7 2 4 2 2'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/combined/test/tests/solid_mechanics/LinearStrainHardening/LinearStrainHardening_test.i
#
[GlobalParams]
volumetric_locking_correction = true
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
file = LinearStrainHardening_test.e
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./plastic_strain_mag]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t/5.0
[../]
[]
[Kernels]
[./TensorMechanics]
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./plastic_strain_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./plastic_strain_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = plastic_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./plastic_strain_mag]
type = MaterialRealAux
property = effective_plastic_strain
variable = plastic_strain_mag
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = 5
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = 4
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = 3
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = 2
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 2.1e5
poissons_ratio = 0.3
[../]
[./strain]
type = ComputeFiniteStrain
block = '1'
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
block = '1'
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 2.4e2
hardening_constant = 1206
relative_tolerance = 1e-25
absolute_tolerance = 1e-05
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
end_time = 0.0105
# num_steps = 100
dt = 1.5e-3
[]
[Outputs]
file_base = LinearStrainHardeningRestart2_out
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update14.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-2 1 -0.5 -1 -1.9 0 -0.5 0 -3'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update12.i
# MC update version, with only compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = stress_II ~1 edge
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-2 0 0 0 0 0 0 0 -2.01'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform10.i
# apply a shear deformation and tensile stretch to observe all hardening.
# Here p_trial=12, q_trial=2*Sqrt(20)
# MOOSE yields:
# q_returned = 1.696
# p_returned = 0.100
# intnl_shear = 1.81
# intnl_tens = 0.886
# These give, at the returned point
# cohesion = 1.84
# tanphi = 0.513
# tanpsi = 0.058
# tensile = 0.412
# This means that
# f_shear = -0.0895
# f_tensile = -0.312
# Note that these are within smoothing_tol (=1) of each other
# Hence, smoothing must be used:
# ismoother = 0.0895
# (which gives the yield function value = 0)
# smoother = 0.328
# This latter gives dg/dq = 0.671, dg/dp = 0.368
# for the flow directions. Finally ga = 2.70, and
# the returned point satisfies the normality conditions.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 't'
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = '2*t'
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = 't'
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 0
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 1E8
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-3
perfect_guess = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform10
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard13.i
# Using CappedMohrCoulomb with compressive failure only
# checking for small deformation, with cubic hardening
# A single element is repeatedly compressed in z direction
# compressive_strength is set to 0.9Pa, compressive_strength_residual = 0.5Pa, and limit value = 1E-5
# This allows the hardening of the compressive strength to be observed
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-0.5E-6*z*t'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 3
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 0.9
value_residual = 0.5
internal_0 = -1E-5
internal_limit = 0
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./compressive]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = compressive
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 10
dt = 1.0
type = Transient
[]
[Outputs]
file_base = small_deform_hard13
csv = true
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_inner_tip.i
# apply repeated stretches in x z directions, and smaller stretches along the y direction,
# so that sigma_I = sigma_II,
# which means that lode angle = 30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-1.7E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = inner_tip
yield_function_tolerance = 1 # irrelevant here
internal_constraint_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 8
smoothing_tol = 1E-7
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3_inner_tip
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard3.i
# Using CappedMohrCoulomb with tensile failure only
# checking for small deformation, with cubic hardening
# A single element is repeatedly stretched in z direction
# tensile_strength is set to 1Pa, tensile_strength_residual = 0.5Pa, and limit value = 1E-5
# This allows the hardening of the tensile strength to be observed
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '2E-6*z*t'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1.0
value_residual = 0.5
internal_0 = 0
internal_limit = 1E-5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 10
dt = 1.0
type = Transient
[]
[Outputs]
file_base = small_deform_hard3
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update4.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 -1 0.5 1 1.9 0 0.5 0 3'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform7.i
# Plastic deformation, tensile with hardening
# With Lame lambda=0 and Lame mu=1, applying the following
# deformation to the zmax surface of a unit cube:
# disp_z = t
# should yield trial stress:
# stress_zz = 2*t
# The tensile strength varies as a cubic between 1 (at intnl=0)
# and 2 (at intnl=1). The equation to solve is
# 2 - Ezzzz * ga = -2 * (ga - 1/2)^3 + (3/2) (ga - 1/2) + 3/2
# where the left-hand side comes from p = p_trial - ga * Ezzzz
# and the right-hand side is the cubic tensile strength
# The solution is ga = 0.355416 ( = intnl[1]), and the cubic
# is 1.289168 ( = p) at that point
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 0
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 0
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1
[../]
[./t_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 2
internal_limit = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 5
smoothing_tol = 5
yield_function_tol = 1E-10
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform7
csv = true
[]
modules/tensor_mechanics/test/tests/visco/gen_kv_creep.i
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
variable = stress_xx
rank_two_tensor = stress
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./strain_xx]
type = RankTwoAux
variable = strain_xx
rank_two_tensor = total_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
variable = creep_strain_xx
rank_two_tensor = creep_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[]
[BCs]
[./symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[../]
[./symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[../]
[./symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[./axial_load]
type = NeumannBC
variable = disp_x
boundary = right
value = 10e6
[../]
[]
[Materials]
[./kelvin_voigt]
type = GeneralizedKelvinVoigtModel
creep_modulus = '10e9 10e9'
creep_viscosity = '1 10'
poisson_ratio = 0.2
young_modulus = 10e9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
[../]
[./creep]
type = LinearViscoelasticStressUpdate
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = kelvin_voigt
[../]
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./strain_xx]
type = ElementAverageValue
variable = strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 100
l_tol = 1e-8
nl_max_its = 50
nl_rel_tol = 1e-8
nl_abs_tol = 1e-8
dtmin = 0.01
end_time = 100
[./TimeStepper]
type = LogConstantDT
first_dt = 0.1
log_dt = 0.1
[../]
[]
[Outputs]
file_base = gen_kv_creep_out
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/cwp11.i
# Capped weak-plane plasticity
# checking jacobian for shear + tensile failure with hardening
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 3
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_0 = -2
internal_limit = 0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 0 0 0 1 0 1 -1.5'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-10
perfect_guess = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/combined/test/tests/exception/nonad.i
[GlobalParams]
order = SECOND
displacements = 'disp_x disp_y'
[]
[Problem]
coord_type = RZ
[]
[Mesh]
patch_update_strategy = iteration
[./gen]
type = FileMeshGenerator
file = mesh.e
[../]
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./temp]
initial_condition = 501
[../]
[]
[AuxVariables]
[./density_aux]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Modules/TensorMechanics/Master]
[./finite]
strain = FINITE
[../]
[]
[Kernels]
[./gravity]
type = Gravity
variable = disp_y
value = -9.81
[../]
[./heat]
type = MatDiffusion
variable = temp
diffusivity = 1
[../]
[./heat_ie]
type = TimeDerivative
variable = temp
[../]
[]
[AuxKernels]
[./conductance]
type = MaterialRealAux
property = density
variable = density_aux
boundary = inner_surface
[../]
[]
[ThermalContact]
[./thermal_contact]
type = GapHeatTransfer
variable = temp
master = outer_interior
slave = inner_surface
quadrature = true
[../]
[]
[BCs]
[./no_x]
type = DirichletBC
variable = disp_x
boundary = 'centerline'
value = 0.0
[../]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = 'centerline outer_exterior'
value = 0.0
[../]
[./temp]
type = FunctionDirichletBC
boundary = outer_exterior
variable = temp
function = '500 + t'
[../]
[]
[Materials]
[./density]
type = GenericConstantMaterial
prop_names = 'density'
prop_values = '1'
[../]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e11
poissons_ratio = 0.3
[../]
[./inner_elastic_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'inner_creep'
block = inner
outputs = all
[../]
[./inner_creep]
type = PowerLawCreepExceptionTest
coefficient = 10e-22
n_exponent = 2
activation_energy = 0
block = inner
[../]
[./outer_stressstress]
type = ComputeFiniteStrainElasticStress
block = outer
[../]
[]
[Executioner]
type = Transient
petsc_options = ' -snes_converged_reason -ksp_converged_reason'
petsc_options_iname = '-pc_type'
petsc_options_value = 'lu'
line_search = none
nl_abs_tol = 1e-7
l_max_its = 20
num_steps = 1
dt = 1
dtmin = .1
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/test/tests/jacobian/cto24.i
# CappedDruckerPrager
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 0.8
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 0.4
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPragerHyperbolic
mc_cohesion = mc_coh
mc_friction_angle = phi
mc_dilation_angle = psi
yield_function_tolerance = 1E-11 # irrelevant here
internal_constraint_tolerance = 1E-9 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
lambda = 0.7
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '10 0 0 0 10 0 0 0 10'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = dp
[../]
[./dp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-11
tip_smoother = 1
smoothing_tol = 1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/cwp09.i
# Capped weak-plane plasticity
# checking jacobian for tensile failure with hardening
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 1.0
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.1
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 2 0 0 -1 2 -1 1.5'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform16.i
# Using CappedMohrCoulomb with compressive failure only
# A single element is incrementally compressed in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = sigma_II
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-0.4*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-0.4*z*t'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 3
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform16
csv = true
[]
modules/tensor_mechanics/test/tests/strain_energy_density/incr_model_elas_plas.i
# Single element test to check the strain energy density calculation
[GlobalParams]
displacements = 'disp_x disp_y'
volumetric_locking_correction = true
[]
[Mesh]
type = GeneratedMesh
dim = 2
nx = 1
ny = 1
xmin = 0
xmax = 1
ymin = 0
ymax = 2
[]
[AuxVariables]
[./SED]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./rampConstantUp]
type = PiecewiseLinear
x = '0. 1.'
y = '0. 1.'
scale_factor = -100
[../]
[./ramp_disp_y]
type = PiecewiseLinear
x = '0. 1. 2.'
y = '0. 6.8e-6 1.36e-5'
[../]
[]
[Modules/TensorMechanics/Master]
[./master]
strain = SMALL
add_variables = true
incremental = true
generate_output = 'stress_xx stress_yy stress_zz vonmises_stress elastic_strain_xx elastic_strain_yy elastic_strain_zz plastic_strain_xx plastic_strain_yy plastic_strain_zz strain_xx strain_yy strain_zz'
planar_formulation = PLANE_STRAIN
[../]
[]
[AuxKernels]
[./SED]
type = MaterialRealAux
variable = SED
property = strain_energy_density
execute_on = timestep_end
[../]
[]
[BCs]
[./no_x]
type = DirichletBC
variable = disp_x
preset = false
boundary = 'left'
value = 0.0
[../]
[./no_y]
type = DirichletBC
variable = disp_y
preset = false
boundary = 'bottom'
value = 0.0
[../]
[./top_disp]
type = FunctionDirichletBC
variable = disp_y
preset = false
boundary = 'top'
function = ramp_disp_y
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 30e+6
poissons_ratio = 0.3
[../]
[./elastic_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'isoplas'
[../]
[./isoplas]
type = IsotropicPlasticityStressUpdate
yield_stress = 1e2
hardening_constant = 0.0
[../]
[./strain_energy_density]
type = StrainEnergyDensity
incremental = true
[../]
[]
[Executioner]
type = Transient
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
l_max_its = 50
nl_max_its = 20
nl_abs_tol = 3e-7
nl_rel_tol = 1e-12
l_tol = 1e-2
start_time = 0.0
dt = 1
end_time = 2
num_steps = 2
[]
[Postprocessors]
[./epxx]
type = ElementalVariableValue
variable = elastic_strain_xx
elementid = 0
[../]
[./epyy]
type = ElementalVariableValue
variable = elastic_strain_yy
elementid = 0
[../]
[./epzz]
type = ElementalVariableValue
variable = elastic_strain_zz
elementid = 0
[../]
[./eplxx]
type = ElementalVariableValue
variable = plastic_strain_xx
elementid = 0
[../]
[./eplyy]
type = ElementalVariableValue
variable = plastic_strain_yy
elementid = 0
[../]
[./eplzz]
type = ElementalVariableValue
variable = plastic_strain_zz
elementid = 0
[../]
[./etxx]
type = ElementalVariableValue
variable = strain_xx
elementid = 0
[../]
[./etyy]
type = ElementalVariableValue
variable = strain_yy
elementid = 0
[../]
[./etzz]
type = ElementalVariableValue
variable = strain_zz
elementid = 0
[../]
[./sigxx]
type = ElementAverageValue
variable = stress_xx
[../]
[./sigyy]
type = ElementAverageValue
variable = stress_yy
[../]
[./sigzz]
type = ElementAverageValue
variable = stress_zz
[../]
[./SED]
type = ElementAverageValue
variable = SED
[../]
[]
[Outputs]
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/recompute_radial_return/isotropic_plasticity_incremental_strain.i
# This simulation uses the piece-wise linear strain hardening model
# with the incremental small strain formulation; incremental small strain
# is required to produce the strain_increment for the DiscreteRadialReturnStressIncrement
# class, which handles the calculation of the stress increment to return
# to the yield surface in a J2 (isotropic) plasticity problem.
#
# This test assumes a Poissons ratio of zero and applies a displacement loading
# condition on the top in the y direction while fixing the displacement in the x
# and z directions; thus, only the normal stress and the normal strains in the
# y direction are compared in this problem.
#
# A similar problem was run in Abaqus on a similar 1 element mesh and was used
# to verify the SolidMechanics solution; this TensorMechanics code matches the
# SolidMechanics solution.
#
# Mechanical strain is the sum of the elastic and plastic strains but is different
# from total strain in cases with eigen strains, e.g. thermal strain.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Functions]
[./top_pull]
type = ParsedFunction
value = t*(0.01)
[../]
[./hf]
type = PiecewiseLinear
x = '0 0.00004 0.0001 0.1'
y = '50 54 56 60'
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_yy plastic_strain_xx plastic_strain_yy plastic_strain_zz'
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = top_pull
[../]
[./x_sides]
type = DirichletBC
variable = disp_x
boundary = 'left right'
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./z_sides]
type = DirichletBC
variable = disp_z
boundary = 'back front'
value = 0.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2.5e5
poissons_ratio = 0.0
[../]
[./isotropic_plasticity]
type = IsotropicPlasticityStressUpdate
yield_stress = 25.
hardening_constant = 1000.0
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'isotropic_plasticity'
[../]
[]
[Executioner]
type = Transient
#Preconditioned JFNK (default)
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 20
nl_rel_tol = 1e-10
nl_abs_tol = 1e-12
l_tol = 1e-9
start_time = 0.0
end_time = 0.01875
dt = 0.00125
dtmin = 0.0001
[]
[Outputs]
exodus = true
print_linear_residuals = true
perf_graph = true
[]
modules/tensor_mechanics/test/tests/jacobian/cwp06.i
# Capped weak-plane plasticity
# checking jacobian for shear failure, with smoothing
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 1
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 1.0
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.1
rate = 1
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 1 0 0 -1 1 -1 0'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 1
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update13.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = stress_II = stress_III ~1 tip
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-2 0 0 0 -1.9 0 0 0 -2.1'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform3_inner_edge.i
# apply repeated stretches in x z directions, and smaller stretches along the y direction,
# so that sigma_I = sigma_II,
# which means that lode angle = 30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-1.7E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E5
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 35
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = inner_edge
yield_function_tolerance = 1 # irrelevant here
internal_constraint_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 8
smoothing_tol = 1E-7
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform3_inner_edge
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update5.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to close to the tip of the yield function.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '15 1 0.2 1 10 -0.3 -0.3 0.2 8'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform22.i
# Mohr-Coulomb only
# apply stretches in x direction and smaller stretches in the y direction
# to observe return to the MC plane
# This tests uses hardening of the cohesion. The returned configuration
# should obey
# 0 = 0.5 * (Smax - Smin) + 0.5 * (Smax + Smin) * sin(phi) - C cos(phi)
# which allows inference of C.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.4E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.1E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[]
[Postprocessors]
[./s_max]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_mid]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_min]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningCubic
value_0 = 10
value_residual = 20
internal_limit = 5E-6
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1E7
poissons_ratio = 0.3
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 0
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform_hard21
csv = true
[]
modules/tensor_mechanics/test/tests/tensile/small_deform2_update_version.i
# Using TensileStressUpdate
# checking for small deformation
# A single element is stretched equally in all directions.
# This causes the return direction to be along the sigma_I = sigma_II = sigma_III line
# tensile_strength is set to 1Pa, and smoothing_tol = 0.1Pa
# The smoothed yield function comes from two smoothing operations.
# The first is on sigma_I and sigma_II (sigma_I >= sigma_II >= sigma_III):
# yf = sigma_I + ismoother(0) - tensile_strength
# = sigma_I + (0.5 * smoothing_tol - smoothing_tol / Pi) - tensile_strength
# = sigma_I + 0.018169 - 1
# The second has the argument of ismoother equal to -0.018169.
# ismoother(-0.018169) = 0.5 * (-0.018169 + 0.1) - 0.1 * cos (0.5 * Pi * -0.018169 / 0.1) / Pi
# = 0.010372
# So the final yield function is
# yf = sigma_I + 0.018169 + 0.010372 - 1 = sigma_I + 0.028541 - 1
# However, because of the asymmetry in smoothing (the yield function is obtained
# by first smoothing sigma_I-ts and sigma_II-ts, and then by smoothing this
# result with sigma_III-ts) the result is sigma_I = sigma_II > sigma_III
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '1E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard22.i
# Mohr-Coulomb only
# apply stretches in x direction and smaller stretches in the y direction
# to observe return to the MC plane
# This tests uses hardening of the friction and dilation angles. The returned configuration
# should obey
# 0 = 0.5 * (Smax - Smin) + 0.5 * (Smax + Smin) * sin(phi) - C cos(phi)
# which allows inference of phi.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.4E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.17E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[]
[Postprocessors]
[./s_max]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_mid]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_min]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningCubic
value_residual = 0.524 # 30deg
value_0 = 0.174 # 10deg
internal_limit = 4E-6
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1E7
poissons_ratio = 0.0
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_phi
smoothing_tol = 0
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 9
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform_hard22
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/push_and_shear.i
# Dynamic problem with plasticity.
# A column of material (not subject to gravity) has the z-displacement
# of its sides fixed, but the centre of its bottom side is pushed
# upwards. This causes failure in the bottom elements.
#
# The problem utilises damping in the following way.
# The DynamicStressDivergenceTensors forms the residual
# integral grad(stress) + zeta*grad(stress-dot)
# = V/L * elasticity * (du/dx + zeta * dv/dx)
# where V is the elemental volume, and L is the length-scale,
# and u is the displacement, and v is the velocity.
# The InertialForce forms the residual
# integral density * (accel + eta * velocity)
# = V * density * (a + eta * v)
# where a is the acceleration.
# So, a damped oscillator description with both these
# kernels looks like
# 0 = V * (density * a + density * eta * v + elasticity * zeta * v / L^2 + elasticity / L^2 * u)
# Critical damping is when the coefficient of v is
# 2 * sqrt(density * elasticity / L^2)
# In the case at hand, density=1E4, elasticity~1E10 (Young is 16GPa),
# L~1 to 10 (in the horizontal or vertical direction), so this coefficient ~ 1E7 to 1E6.
# Choosing eta = 1E3 and zeta = 1E-2 gives approximate critical damping.
# If zeta is high then steady-state is achieved very quickly.
#
# In the case of plasticity, the effective stiffness of the elements
# is significantly less. Therefore, the above parameters give
# overdamping.
#
# This simulation is a nice example of the irreversable and non-uniqueness
# of simulations involving plasticity. The result depends on the damping
# parameters and the time stepping.
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 10
ny = 1
nz = 5
bias_z = 1.5
xmin = -10
xmax = 10
ymin = -10
ymax = 10
zmin = -100
zmax = 0
[]
[bottomz_middle]
type = BoundingBoxNodeSetGenerator
new_boundary = bottomz_middle
bottom_left = '-1 -1500 -105'
top_right = '1 1500 -95'
input = generated_mesh
[]
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
beta = 0.25 # Newmark time integration
gamma = 0.5 # Newmark time integration
eta = 1E3 #0.3E4 # higher values mean more damping via density
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./DynamicTensorMechanics] # zeta*K*vel + K * disp
displacements = 'disp_x disp_y disp_z'
zeta = 1E-2 # higher values mean more damping via stiffness
alpha = 0 # better nonlinear convergence than for alpha>0
[../]
[./inertia_x] # M*accel + eta*M*vel
type = InertialForce
use_displaced_mesh = false
variable = disp_x
velocity = vel_x
acceleration = accel_x
[../]
[./inertia_y]
type = InertialForce
use_displaced_mesh = false
variable = disp_y
velocity = vel_y
acceleration = accel_y
[../]
[./inertia_z]
type = InertialForce
use_displaced_mesh = false
variable = disp_z
velocity = vel_z
acceleration = accel_z
[../]
[]
[BCs]
[./no_x2]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./no_x1]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./no_y1]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./no_y2]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./z_fixed_sides_xmin]
type = DirichletBC
variable = disp_z
boundary = left
value = 0
[../]
[./z_fixed_sides_xmax]
type = DirichletBC
variable = disp_z
boundary = right
value = 0
[../]
[./bottomz]
type = FunctionDirichletBC
variable = disp_z
boundary = bottomz_middle
function = min(10*t,1)
[../]
[]
[AuxVariables]
[./accel_x]
[../]
[./vel_x]
[../]
[./accel_y]
[../]
[./vel_y]
[../]
[./accel_z]
[../]
[./vel_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./accel_x] # Calculates and stores acceleration at the end of time step
type = NewmarkAccelAux
variable = accel_x
displacement = disp_x
velocity = vel_x
execute_on = timestep_end
[../]
[./vel_x] # Calculates and stores velocity at the end of the time step
type = NewmarkVelAux
variable = vel_x
acceleration = accel_x
execute_on = timestep_end
[../]
[./accel_y]
type = NewmarkAccelAux
variable = accel_y
displacement = disp_y
velocity = vel_y
execute_on = timestep_end
[../]
[./vel_y]
type = NewmarkVelAux
variable = vel_y
acceleration = accel_y
execute_on = timestep_end
[../]
[./accel_z]
type = NewmarkAccelAux
variable = accel_z
displacement = disp_z
velocity = vel_z
execute_on = timestep_end
[../]
[./vel_z]
type = NewmarkVelAux
variable = vel_z
acceleration = accel_z
execute_on = timestep_end
[../]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1E80
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '6.4E9 6.4E9' # young 16MPa, Poisson 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0.5E6
smoothing_tol = 0.5E6
yield_function_tol = 1E-2
[../]
[./density]
type = GenericConstantMaterial
block = 0
prop_names = density
prop_values = 1E4
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options = '-snes_converged_reason -snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
line_search = bt
nl_abs_tol = 1E1
nl_rel_tol = 1e-5
l_tol = 1E-10
l_max_its = 100
nl_max_its = 100
end_time = 0.5
dt = 0.1
type = Transient
[]
[Outputs]
file_base = push_and_shear
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform1.i
# Using CappedMohrCoulomb with tensile failure only
# checking for small deformation
# A single element is stretched by 1E-6m in z direction, and by small amounts in x and y directions
# stress_zz = Youngs Modulus*Strain = 2E6*1E-6 = 2 Pa
# tensile_strength is set to 1Pa
# Then the final stress should return to the yeild surface and the minimum principal stress value should be 1pa.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.2E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.0
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform1
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform4.i
# Plastic deformation, compression failure
# With Young = 10, poisson=0.25 (Lame lambda=4, mu=4)
# applying the following
# deformation to the zmax surface of a unit cube:
# disp_x = 4*t
# disp_y = 3*t
# disp_z = -t
# should yield trial stress:
# stress_zz = 12*t
# stress_zx = 16*t
# stress_zy = -12*t
# Use compressive strength = 6, we should return to stress_zz = -6,
# and stress_xx = stress_yy = -2*t up to t=1 when the system is completely
# plastic, so these stress components will not change
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 4*t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 3*t
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = -t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 80
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 6
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 6
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 2
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform4
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform_hard21.i
# Mohr-Coulomb only
# apply stretches in x direction and smaller stretches in the y direction
# to observe return to the MC plane
# This tests uses hardening of the cohesion. The returned configuration
# should obey
# 0 = 0.5 * (Smax - Smin) + 0.5 * (Smax + Smin) * sin(phi) - C cos(phi)
# which allows inference of C.
# The tensile internal parameter is recorded, to check that it is zero
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0.4E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.1E-6*y*t'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[./iter_auxk]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./intnl_auxk]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[]
[Postprocessors]
[./s_max]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_mid]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_min]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./intnl]
type = PointValue
point = '0 0 0'
variable = intnl
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningCubic
value_0 = 10
value_residual = 20
internal_limit = 5E-6
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1E7
poissons_ratio = 0.3
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 0
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 10
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform_hard21
csv = true
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update18.i
# MC update version, with only Compressive with compressive strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0
internal_limit = 2E-3
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-2 1 -0.5 -1 -1.9 0 -0.5 0 -3'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/jacobian/tensile_update7.i
# Tensile, update version, with strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Start from non-diagonal stress state with softening.
# Returns to close to the edge of tensile yield
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningCubic
value_0 = 1
value_residual = 0.5
internal_limit = 2E-2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.5E3
shear_modulus = 1.0E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '-1 0.1 0.2 0.1 15 -0.3 0.2 -0.3 14'
eigenstrain_name = ini_stress
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/combined/test/tests/power_law_creep/power_law_creep_smallstrain.i
# 1x1x1 unit cube with uniform pressure on top face for the case of small strain.
# This test does not have a solid mechanics analog because there is not an equvialent
# small strain with rotations strain calculator material in solid mechanics
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 1000.0
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_yy creep_strain_xx creep_strain_yy creep_strain_zz elastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1'
y = '1 1'
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat_ie]
type = HeatConductionTimeDerivative
variable = temp
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = -10.0e6
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./temp_fix]
type = DirichletBC
variable = temp
boundary = 'bottom top'
value = 1000.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2e11
poissons_ratio = 0.3
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'power_law_creep'
tangent_operator = elastic
[../]
[./power_law_creep]
type = PowerLawCreepStressUpdate
coefficient = 1.0e-15
n_exponent = 4
activation_energy = 3.0e5
temperature = temp
[../]
[./thermal]
type = HeatConductionMaterial
specific_heat = 1.0
thermal_conductivity = 100.
[../]
[./density]
type = Density
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 20
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
l_tol = 1e-5
start_time = 0.0
end_time = 1.0
num_steps = 10
dt = 0.1
[]
[Outputs]
exodus = true
[]
modules/combined/test/tests/power_law_creep/power_law_creep_restart1.i
# 1x1x1 unit cube with uniform pressure on top face
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
[]
[Variables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 1000.0
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
incremental = true
add_variables = true
generate_output = 'stress_yy creep_strain_xx creep_strain_yy creep_strain_zz elastic_strain_yy'
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1'
y = '1 1'
[../]
[]
[Kernels]
[./heat]
type = HeatConduction
variable = temp
[../]
[./heat_ie]
type = HeatConductionTimeDerivative
variable = temp
[../]
[]
[BCs]
[./u_top_pull]
type = Pressure
variable = disp_y
component = 1
boundary = top
factor = -10.0e6
function = top_pull
[../]
[./u_bottom_fix]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./u_yz_fix]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./u_xy_fix]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./temp_fix]
type = DirichletBC
variable = temp
boundary = 'bottom top'
value = 1000.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2e11
poissons_ratio = 0.3
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'power_law_creep'
[../]
[./power_law_creep]
type = PowerLawCreepStressUpdate
coefficient = 1.0e-15
n_exponent = 4
activation_energy = 3.0e5
temperature = temp
[../]
[./thermal]
type = HeatConductionMaterial
specific_heat = 1.0
thermal_conductivity = 100.
[../]
[./density]
type = Density
density = 1.0
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp'
petsc_options_iname = '-ksp_gmres_restart'
petsc_options_value = '101'
line_search = 'none'
l_max_its = 20
nl_max_its = 20
nl_rel_tol = 1e-6
nl_abs_tol = 1e-6
l_tol = 1e-5
start_time = 0.0
end_time = 1.0
num_steps = 6
dt = 0.1
[]
[Outputs]
exodus = true
csv = true
[./out]
type = Checkpoint
num_files = 1
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform15.i
# Using CappedMohrCoulomb with compressive failure only
# A single element is incrementally compressed in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = 0
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-2*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-0.5*z*(t+1.5*t*t)'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 3
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform15
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform23.i
# apply repeated stretches in x z directions, and smaller stretches along the y direction,
# so that sigma_max = sigma_mid (approximately),
# which means that lode angle = 30deg.
# The allows yield surface in meridional plane to be mapped out
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '1E-6*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0.25E-6*y*sin(t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '1E-6*z*t'
[../]
[]
[AuxVariables]
[./mc_int]
order = CONSTANT
family = MONOMIAL
[../]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./mc_int_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_internal_parameter
variable = mc_int
[../]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 6
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./internal]
type = PointValue
point = '0 0 0'
variable = mc_int
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E7'
[../]
[./mc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = ts
cohesion = mc_coh
friction_angle = mc_phi
dilation_angle = mc_psi
smoothing_tol = 5.0
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 30
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform23
csv = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/except4.i
# Exception: incorrect userobject types
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = -1
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E6'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
modules/tensor_mechanics/test/tests/jacobian/cto28.i
#Cosserat capped weak plane and capped drucker prager
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./cx_elastic]
type = StressDivergenceTensors
variable = disp_x
component = 0
[../]
[./cy_elastic]
type = StressDivergenceTensors
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = StressDivergenceTensors
variable = disp_z
component = 2
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 0.8
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 0.4
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPragerHyperbolic
mc_cohesion = mc_coh
mc_friction_angle = phi
mc_dilation_angle = psi
yield_function_tolerance = 1E-11 # irrelevant here
internal_constraint_tolerance = 1E-9 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 10.0
poissons_ratio = 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '10 0 0 0 10 0 0 0 10'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = 'dp'
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
[../]
[./dp]
type = CappedDruckerPragerStressUpdate
base_name = dp
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-11
tip_smoother = 1
smoothing_tol = 1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
end_time = 1
dt = 1
type = Transient
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update1.i
# MC update version, with only Tensile with tensile strength = 1MPa and smoothing_tol = 0.1E5
# Lame lambda = 1GPa. Lame mu = 1.3GPa
# Units in this file are MPa (not Pa)
#
# Return to the stress_I = 1 plane
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 30
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0E3
shear_modulus = 1.3E3
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '2 0 0 0 0 0 0 0 -2'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/visco/burgers_creep.i
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
order = FIRST
family = LAGRANGE
[../]
[./disp_y]
order = FIRST
family = LAGRANGE
[../]
[./disp_z]
order = FIRST
family = LAGRANGE
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./creep_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
use_displaced_mesh = true
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
variable = stress_xx
rank_two_tensor = stress
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./strain_xx]
type = RankTwoAux
variable = strain_xx
rank_two_tensor = total_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[./creep_strain_xx]
type = RankTwoAux
variable = creep_strain_xx
rank_two_tensor = creep_strain
index_j = 0
index_i = 0
execute_on = timestep_end
[../]
[]
[BCs]
[./symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[../]
[./symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[../]
[./symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[../]
[./axial_load]
type = NeumannBC
variable = disp_x
boundary = right
value = 10e6
[../]
[]
[Materials]
[./burgers]
type = GeneralizedKelvinVoigtModel
creep_modulus = '10e9'
creep_viscosity = '1 10'
poisson_ratio = 0.2
young_modulus = 10e9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
[../]
[./creep]
type = LinearViscoelasticStressUpdate
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./update]
type = LinearViscoelasticityManager
viscoelastic_model = burgers
[../]
[]
[Postprocessors]
[./stress_xx]
type = ElementAverageValue
variable = stress_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./strain_xx]
type = ElementAverageValue
variable = strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[./creep_strain_xx]
type = ElementAverageValue
variable = creep_strain_xx
block = 'ANY_BLOCK_ID 0'
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
l_max_its = 50
l_tol = 1e-10
nl_max_its = 20
nl_rel_tol = 1e-10
nl_abs_tol = 1e-10
dtmin = 0.01
end_time = 100
[./TimeStepper]
type = LogConstantDT
first_dt = 0.1
log_dt = 0.1
[../]
[]
[Outputs]
file_base = burgers_creep_out
exodus = true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/pull_push_h.i
# A column of elements has its bottom pulled down, and then pushed up again.
# Hardening of the tensile strength means that the top element also
# experiences plastic deformation
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 2
xmin = -10
xmax = 10
ymin = -10
ymax = 10
zmin = -100
zmax = 0
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
[../]
[]
[BCs]
[./no_x2]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.0
[../]
[./no_x1]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./no_y1]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./no_y2]
type = DirichletBC
variable = disp_y
boundary = top
value = 0.0
[../]
[./topz]
type = DirichletBC
variable = disp_z
boundary = front
value = 0
[../]
[./bottomz]
type = FunctionDirichletBC
variable = disp_z
boundary = back
function = 'if(t>1,-2.0+t,-t)'
[../]
[]
[AuxVariables]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./strainp_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./straint_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
[../]
[./stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
[../]
[./stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
[../]
[./stress_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./strainp_xx]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xx
index_i = 0
index_j = 0
[../]
[./strainp_xy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xy
index_i = 0
index_j = 1
[../]
[./strainp_xz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_xz
index_i = 0
index_j = 2
[../]
[./strainp_yy]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yy
index_i = 1
index_j = 1
[../]
[./strainp_yz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_yz
index_i = 1
index_j = 2
[../]
[./strainp_zz]
type = RankTwoAux
rank_two_tensor = plastic_strain
variable = strainp_zz
index_i = 2
index_j = 2
[../]
[./straint_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xx
index_i = 0
index_j = 0
[../]
[./straint_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xy
index_i = 0
index_j = 1
[../]
[./straint_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_xz
index_i = 0
index_j = 2
[../]
[./straint_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yy
index_i = 1
index_j = 1
[../]
[./straint_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_yz
index_i = 1
index_j = 2
[../]
[./straint_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = straint_zz
index_i = 2
index_j = 2
[../]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[UserObjects]
[./coh_irrelevant]
type = TensorMechanicsHardeningCubic
value_0 = 2E6
value_residual = 1E6
internal_limit = 0.01
[../]
[./tanphi]
type = TensorMechanicsHardeningCubic
value_0 = 0.5
value_residual = 0.2
internal_limit = 0.01
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningCubic
value_0 = 0
value_residual = 1E8
internal_limit = 0.1
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 1E8
value_residual = 0.0
internal_limit = 0.01
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '6.4E9 6.4E9' # young 16MPa, Poisson 0.25
[../]
[./strain]
type = ComputeIncrementalSmallStrain
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh_irrelevant
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 1000
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
perfect_guess = false
min_step_size = 0.1
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
#petsc_options = '-snes_converged_reason -snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
[../]
[]
[Executioner]
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
line_search = bt
nl_abs_tol = 1E-2
nl_rel_tol = 1e-15
l_tol = 1E-10
l_max_its = 100
nl_max_its = 100
end_time = 3.0
dt = 0.1
type = Transient
[]
[Outputs]
file_base = pull_push_h
exodus = true
csv = true
[]
modules/tensor_mechanics/test/tests/temperature_dependent_hardening/temp_dep_hardening.i
#
# This is a test of the piece-wise linear strain hardening model using the
# small strain formulation. This test exercises the temperature-dependent
# hardening curve capability.
#
# Test procedure:
# 1. The element is pulled to and then beyond the yield stress for a given
# temperature.
# 2. The displacement is then constant while the temperature increases and
# the yield stress decreases. This results in a lower stress with more
# plastic strain.
# 3. The temperature decreases beyond its original value giving a higher
# yield stress. The displacement increases, causing increases stress to
# the new yield stress.
# 4. The temperature and yield stress are constant with increasing
# displacement giving a constant stress and more plastic strain.
#
# Plotting total_strain_yy on the x axis and stress_yy on the y axis shows
# the stress history in a clear way.
#
# s |
# t | *****
# r | *
# e | ***** *
# s | * * *
# s | * *
# |*
# +------------------
# total strain
#
# The exact same problem was run in Abaqus with exactly the same result.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
# This test uses ElementalVariableValue postprocessors on specific
# elements, so element numbering needs to stay unchanged
allow_renumbering = false
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[AuxVariables]
[./temp]
order = FIRST
family = LAGRANGE
initial_condition = 500.0
[../]
[]
[AuxKernels]
[./temp_aux]
type = FunctionAux
variable = temp
function = temp_hist
[../]
[]
[Functions]
[./top_pull]
type = PiecewiseLinear
x = '0 1 2 4 5 6'
y = '0 0.025 0.05 0.05 0.06 0.085'
[../]
[./hf1]
type = PiecewiseLinear
x = '0.0 0.01 0.02 0.03 0.1'
y = '5000 5030 5060 5090 5300'
[../]
[./hf2]
type = PiecewiseLinear
x = '0.0 0.01 0.02 0.03 0.1'
y = '4000 4020 4040 4060 4200'
[../]
[./temp_hist]
type = PiecewiseLinear
x = '0 1 2 3 4'
y = '500 500 500 600 400'
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_yy strain_yy plastic_strain_xx plastic_strain_yy plastic_strain_zz'
[../]
[]
[BCs]
[./y_pull_function]
type = FunctionDirichletBC
variable = disp_y
boundary = 3
function = top_pull
[../]
[./x_bot]
type = DirichletBC
variable = disp_x
boundary = 4
value = 0.0
[../]
[./y_bot]
type = DirichletBC
variable = disp_y
boundary = 1
value = 0.0
[../]
[./z_bot]
type = DirichletBC
variable = disp_z
boundary = 0
value = 0.0
[../]
[]
[Postprocessors]
[./stress_yy_el]
type = ElementalVariableValue
variable = stress_yy
elementid = 0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 2e5
poissons_ratio = 0.3
[../]
[./temp_dep_hardening]
type = TemperatureDependentHardeningStressUpdate
hardening_functions = 'hf1 hf2'
temperatures = '300.0 800.0'
relative_tolerance = 1e-25
absolute_tolerance = 1e-5
temperature = temp
[../]
[./radial_return_stress]
type = ComputeMultipleInelasticStress
tangent_operator = elastic
inelastic_models = 'temp_dep_hardening'
[../]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-ksp_gmres_restart -pc_type -pc_hypre_type -pc_hypre_boomeramg_max_iter'
petsc_options_value = '201 hypre boomeramg 4'
line_search = 'none'
l_max_its = 100
nl_max_its = 100
nl_rel_tol = 1e-12
nl_abs_tol = 1e-10
l_tol = 1e-9
start_time = 0.0
end_time = 6
dt = 0.1
[]
[Outputs]
[./out]
type = Exodus
[../]
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/except2.i
# Exception: incorrect userobject types
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = -0.1111077
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 2
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1E6'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
modules/tensor_mechanics/test/tests/jacobian/mc_update21.i
# MC update version, with only MohrCoulomb, cohesion=10, friction angle = 60, psi = 5, smoothing_tol = 1
# Lame lambda = 0.5. Lame mu = 1
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./phi]
type = TensorMechanicsHardeningConstant
value = 60
convert_to_radians = true
[../]
[./psi]
type = TensorMechanicsHardeningConstant
value = 5
convert_to_radians = true
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 0.5
shear_modulus = 1.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '3 0 0 0 3 0 0 0 1.5'
eigenstrain_name = ini_stress
[../]
[./cmc]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = phi
dilation_angle = psi
smoothing_tol = 1
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = cmc
perform_finite_strain_rotations = false
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-snes_type'
petsc_options_value = 'test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_drucker_prager/small_deform2_inner_edge.i
# apply repeated stretches in x, y and z directions, so that mean_stress = 0
# This maps out the yield surface in the octahedral plane for zero mean stress
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-1.5E-6*x+2E-6*x*sin(t)'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '2E-6*y*sin(2*t)'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-2E-6*z*(sin(t)+sin(2*t))'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
index = 0
property = plastic_yield_function
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f0]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[./f1]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1000
[../]
[./mc_coh]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./mc_phi]
type = TensorMechanicsHardeningConstant
value = 20
convert_to_radians = true
[../]
[./mc_psi]
type = TensorMechanicsHardeningConstant
value = 0
[../]
[./dp]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = mc_coh
mc_friction_angle = mc_phi
mc_dilation_angle = mc_psi
mc_interpolation_scheme = inner_edge
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
block = 0
lambda = 0.0
shear_modulus = 1.0e7
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = cdp
perform_finite_strain_rotations = false
[../]
[./cdp]
type = CappedDruckerPragerStressUpdate
DP_model = dp
tensile_strength = ts
compressive_strength = cs
yield_function_tol = 1E-8
tip_smoother = 4
smoothing_tol = 1E-5
[../]
[]
[Executioner]
end_time = 100
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform2_inner_edge
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/small_deform11.i
# Using CappedMohrCoulomb with compressive failure only
# checking for small deformation
# A single element is stretched by -1E-6m in z direction, and by small amounts in x and y directions
# stress_zz = Youngs Modulus*Strain = -2E6*1E-6 = -2 Pa
# compressive_strength is set to 1Pa
# Then the final stress should return to the yeild surface and the minimum principal stress value should be -1pa.
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '-0.1E-6*x'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '-0.2E-6*y'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '-1E-6*z'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./s_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./s_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./s_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./s_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./s_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./cs]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E6
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
block = 0
fill_method = symmetric_isotropic
C_ijkl = '0 2.0E6'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 0.0
yield_function_tol = 1.0E-9
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform11
csv = true
[]
modules/tensor_mechanics/test/tests/capped_mohr_coulomb/random2.i
# Using CappedMohrCoulomb with compressive failure only
# Plasticity models:
# Compressive strength = 1 MPa
#
# Lame lambda = 1GPa. Lame mu = 1.3GPa
#
# A line of elements is perturbed randomly, and return to the yield surface at each quadpoint is checked
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1234
nz = 1
xmin = 0
xmax = 1
ymin = 0
ymax = 1234
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[ICs]
[./x]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_x
[../]
[./y]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_y
[../]
[./z]
type = RandomIC
min = -0.1
max = 0.1
variable = disp_z
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '0'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = '0'
[../]
[]
[AuxVariables]
[./f0]
order = CONSTANT
family = MONOMIAL
[../]
[./f1]
order = CONSTANT
family = MONOMIAL
[../]
[./f2]
order = CONSTANT
family = MONOMIAL
[../]
[./int0]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f0]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f0
[../]
[./f1]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f1
[../]
[./f2]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f2
[../]
[./int0]
type = MaterialStdVectorAux
property = plastic_internal_parameter
factor = 1E6
index = 0
variable = int0
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[]
[Postprocessors]
[./tot_iters]
type = ElementIntegralMaterialProperty
mat_prop = plastic_NR_iterations
outputs = console
[../]
[./raw_f0]
type = ElementExtremeValue
variable = f0
outputs = console
[../]
[./raw_f1]
type = ElementExtremeValue
variable = f1
outputs = console
[../]
[./raw_f2]
type = ElementExtremeValue
variable = f2
outputs = console
[../]
[./iter]
type = ElementExtremeValue
variable = iter
outputs = console
[../]
[./f0]
type = FunctionValuePostprocessor
function = should_be_zero0_fcn
[../]
[./f1]
type = FunctionValuePostprocessor
function = should_be_zero1_fcn
[../]
[./f2]
type = FunctionValuePostprocessor
function = should_be_zero2_fcn
[../]
[]
[Functions]
[./should_be_zero0_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f0'
[../]
[./should_be_zero1_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f1'
[../]
[./should_be_zero2_fcn]
type = ParsedFunction
value = 'if(a<1E-1,0,a)'
vars = 'a'
vals = 'raw_f2'
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./cs]
type = TensorMechanicsHardeningCubic
value_0 = 1E6
value_residual = 0
internal_limit = 1
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./ang]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '1E9 1.3E9'
[../]
[./tensile]
type = CappedMohrCoulombStressUpdate
tensile_strength = ts
compressive_strength = cs
cohesion = coh
friction_angle = ang
dilation_angle = ang
smoothing_tol = 1E5
max_NR_iterations = 100
yield_function_tol = 1.0E-1
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = random2
csv = true
[]
modules/tensor_mechanics/test/tests/material_limit_time_step/mult_inelastic/no_inelastic_model_timestep_limit.i
# This is a basic test of the material time step computed by the
# ComputeMultipleInelasticStress model. If no inelastic models
# are defined, the material time step should be the maximum
# value representable by a real number.
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
elem_type = HEX8
[]
[AuxVariables]
[damage_index]
order = CONSTANT
family = MONOMIAL
[]
[]
[Modules/TensorMechanics/Master]
[all]
strain = SMALL
incremental = true
add_variables = true
generate_output = 'stress_xx strain_xx'
[]
[]
[BCs]
[symmy]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0
[]
[symmx]
type = DirichletBC
variable = disp_x
boundary = left
value = 0
[]
[symmz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0
[]
[axial_load]
type = DirichletBC
variable = disp_x
boundary = right
value = 0.01
[]
[]
[Materials]
[stress]
type = ComputeMultipleInelasticStress
inelastic_models = ''
[]
[elasticity]
type = ComputeIsotropicElasticityTensor
poissons_ratio = 0.2
youngs_modulus = 10e9
[]
[]
[Postprocessors]
[stress_xx]
type = ElementAverageValue
variable = stress_xx
[]
[strain_xx]
type = ElementAverageValue
variable = strain_xx
[]
[time_step_limit]
type = MaterialTimeStepPostprocessor
[]
[]
[Executioner]
type = Transient
l_max_its = 50
l_tol = 1e-8
nl_max_its = 20
nl_rel_tol = 1e-12
nl_abs_tol = 1e-8
dt = 0.1
dtmin = 0.001
end_time = 1.1
[TimeStepper]
type = IterationAdaptiveDT
dt = 0.1
growth_factor = 2.0
cutback_factor = 0.5
timestep_limiting_postprocessor = time_step_limit
[]
[]
[Outputs]
csv=true
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform5.i
# Plastic deformation, shear failure
# With Young = 10, poisson=0.25 (Lame lambda=4, mu=4)
# applying the following
# deformation to the zmax surface of a unit cube:
# disp_x = 8*t
# disp_y = 6*t
# disp_z = 5*t/6
# should yield trial stress:
# stress_zz = 10*t
# stress_zx = 32*t
# stress_zy = 24*t (so q_trial = 40*t)
# Use tan(friction_angle) = 0.5 and tan(dilation_angle) = 1/6, and cohesion=20,
# the system should return to p=0, q=20, ie stress_zz=0, stress_xz=16,
# stress_yz=12 on the first time step (t=1)
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 8*t
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 6*t
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = 5*t/6
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.166666666667
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '4 4'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 0
yield_function_tol = 1E-5
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform5
csv = true
[]
modules/tensor_mechanics/test/tests/tensile/small_deform5_update_version.i
# checking for small deformation
# A single element is incrementally stretched in the in the z and x directions
# This causes the return direction to be along the hypersurface sigma_I = sigma_II,
# and the resulting stresses are checked to lie on the expected yield surface
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
strain = finite
generate_output = 'max_principal_stress mid_principal_stress min_principal_stress stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz'
[../]
[]
[BCs]
[./x]
type = FunctionDirichletBC
variable = disp_x
boundary = 'front back'
function = '4*x*t'
[../]
[./y]
type = FunctionDirichletBC
variable = disp_y
boundary = 'front back'
function = '0'
[../]
[./z]
type = FunctionDirichletBC
variable = disp_z
boundary = 'front back'
function = 'z*(t-0.5)'
[../]
[]
[AuxVariables]
[./yield_fcn]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./yield_fcn_auxk]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = yield_fcn
[../]
[]
[Postprocessors]
[./s_I]
type = PointValue
point = '0 0 0'
variable = max_principal_stress
[../]
[./s_II]
type = PointValue
point = '0 0 0'
variable = mid_principal_stress
[../]
[./s_III]
type = PointValue
point = '0 0 0'
variable = min_principal_stress
[../]
[./f]
type = PointValue
point = '0 0 0'
variable = yield_fcn
[../]
[]
[UserObjects]
[./ts]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 2.0'
[../]
[./tensile]
type = TensileStressUpdate
tensile_strength = ts
smoothing_tol = 0.5
yield_function_tol = 1.0E-12
[../]
[./stress]
type = ComputeMultipleInelasticStress
inelastic_models = tensile
perform_finite_strain_rotations = false
[../]
[]
[Executioner]
end_time = 1
dt = 0.1
type = Transient
[]
[Outputs]
file_base = small_deform5_update_version
exodus = false
[./csv]
type = CSV
[../]
[]
modules/tensor_mechanics/test/tests/jacobian/cwp10.i
# Capped weak-plane plasticity
# checking jacobian for shear failure with hardening
[Mesh]
type = GeneratedMesh
dim = 3
[]
[GlobalParams]
block = 0
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[Kernels]
[./TensorMechanics]
displacements = 'disp_x disp_y disp_z'
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningExponential
value_0 = 1
value_residual = 2
rate = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningExponential
value_0 = 1.0
value_residual = 0.5
rate = 2
[../]
[./tanpsi]
type = TensorMechanicsHardeningExponential
value_0 = 0.1
value_residual = 0.05
rate = 3
[../]
[./t_strength]
type = TensorMechanicsHardeningExponential
value_0 = 100
value_residual = 100
rate = 1
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
lambda = 1.0
shear_modulus = 2.0
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = '0 0 2 0 0 -1 2 -1 0.1'
eigenstrain_name = ini_stress
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
tangent_operator = nonlinear
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 0
smoothing_tol = 2
yield_function_tol = 1E-10
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it -snes_type'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000 test'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
[]
modules/tensor_mechanics/test/tests/capped_weak_plane/small_deform8.i
# Plastic deformation, compression with hardening
# With Lame lambda=0 and Lame mu=1, applying the following
# deformation to the zmax surface of a unit cube:
# disp_z = -t
# should yield trial stress:
# stress_zz = -2*t
# The compressive strength varies as a cubic between 1 (at intnl=0)
# and 2 (at intnl=1). The equation to solve is
# 2 - Ezzzz * ga = -2 * (ga - 1/2)^3 + (3/2) (ga - 1/2) + 3/2
# where the left-hand side comes from p = p_trial + ga * Ezzzz
# and the right-hand side is the cubic compressive strength
# The solution is ga = 0.355416 ( = intnl[1]), and the cubic
# is 1.289168 ( = -p) at that point
[Mesh]
type = GeneratedMesh
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -0.5
xmax = 0.5
ymin = -0.5
ymax = 0.5
zmin = -0.5
zmax = 0.5
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
[]
[Modules/TensorMechanics/Master]
[./all]
add_variables = true
incremental = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_yz stress_zz plastic_strain_xx plastic_strain_xy plastic_strain_xz plastic_strain_yy plastic_strain_yz plastic_strain_zz strain_xx strain_xy strain_xz strain_yy strain_yz strain_zz'
[../]
[]
[BCs]
[./bottomx]
type = DirichletBC
variable = disp_x
boundary = back
value = 0.0
[../]
[./bottomy]
type = DirichletBC
variable = disp_y
boundary = back
value = 0.0
[../]
[./bottomz]
type = DirichletBC
variable = disp_z
boundary = back
value = 0.0
[../]
[./topx]
type = FunctionDirichletBC
variable = disp_x
boundary = front
function = 0
[../]
[./topy]
type = FunctionDirichletBC
variable = disp_y
boundary = front
function = 0
[../]
[./topz]
type = FunctionDirichletBC
variable = disp_z
boundary = front
function = -t
[../]
[]
[AuxVariables]
[./f_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./f_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./f_compressive]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./intnl_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./iter]
order = CONSTANT
family = MONOMIAL
[../]
[./ls]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./f_shear]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 0
variable = f_shear
[../]
[./f_tensile]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 1
variable = f_tensile
[../]
[./f_compressive]
type = MaterialStdVectorAux
property = plastic_yield_function
index = 2
variable = f_compressive
[../]
[./intnl_shear]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 0
variable = intnl_shear
[../]
[./intnl_tensile]
type = MaterialStdVectorAux
property = plastic_internal_parameter
index = 1
variable = intnl_tensile
[../]
[./iter]
type = MaterialRealAux
property = plastic_NR_iterations
variable = iter
[../]
[./ls]
type = MaterialRealAux
property = plastic_linesearch_needed
variable = ls
[../]
[]
[Postprocessors]
[./stress_xx]
type = PointValue
point = '0 0 0'
variable = stress_xx
[../]
[./stress_xy]
type = PointValue
point = '0 0 0'
variable = stress_xy
[../]
[./stress_xz]
type = PointValue
point = '0 0 0'
variable = stress_xz
[../]
[./stress_yy]
type = PointValue
point = '0 0 0'
variable = stress_yy
[../]
[./stress_yz]
type = PointValue
point = '0 0 0'
variable = stress_yz
[../]
[./stress_zz]
type = PointValue
point = '0 0 0'
variable = stress_zz
[../]
[./strainp_xx]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xx
[../]
[./strainp_xy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xy
[../]
[./strainp_xz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_xz
[../]
[./strainp_yy]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yy
[../]
[./strainp_yz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_yz
[../]
[./strainp_zz]
type = PointValue
point = '0 0 0'
variable = plastic_strain_zz
[../]
[./straint_xx]
type = PointValue
point = '0 0 0'
variable = strain_xx
[../]
[./straint_xy]
type = PointValue
point = '0 0 0'
variable = strain_xy
[../]
[./straint_xz]
type = PointValue
point = '0 0 0'
variable = strain_xz
[../]
[./straint_yy]
type = PointValue
point = '0 0 0'
variable = strain_yy
[../]
[./straint_yz]
type = PointValue
point = '0 0 0'
variable = strain_yz
[../]
[./straint_zz]
type = PointValue
point = '0 0 0'
variable = strain_zz
[../]
[./f_shear]
type = PointValue
point = '0 0 0'
variable = f_shear
[../]
[./f_tensile]
type = PointValue
point = '0 0 0'
variable = f_tensile
[../]
[./f_compressive]
type = PointValue
point = '0 0 0'
variable = f_compressive
[../]
[./intnl_shear]
type = PointValue
point = '0 0 0'
variable = intnl_shear
[../]
[./intnl_tensile]
type = PointValue
point = '0 0 0'
variable = intnl_tensile
[../]
[./iter]
type = PointValue
point = '0 0 0'
variable = iter
[../]
[./ls]
type = PointValue
point = '0 0 0'
variable = ls
[../]
[]
[UserObjects]
[./coh]
type = TensorMechanicsHardeningConstant
value = 20
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 0.5
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.1
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 100
[../]
[./c_strength]
type = TensorMechanicsHardeningCubic
value_0 = 2
value_residual = 1
internal_0 = -1
internal_limit = 0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0 1'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = stress
perform_finite_strain_rotations = false
[../]
[./stress]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
max_NR_iterations = 20
tip_smoother = 5
smoothing_tol = 5
yield_function_tol = 1E-10
[../]
[]
[Executioner]
end_time = 1
dt = 1
type = Transient
[]
[Outputs]
file_base = small_deform8
csv = true
[]
modules/porous_flow/test/tests/plastic_heating/shear01.i
# Tensile heating, using capped weak-plane plasticity
# x_disp(z=1) = t
# totalstrain_xz = t
# with C_ijkl = 0.5 0.25
# stress_zx = stress_xz = 0.25*t, so q=0.25*t, but
# with cohesion=1 and tan(phi)=1: max(q)=1. With tan(psi)=0,
# the plastic return is always to (p, q) = (0, 1),
# so plasticstrain_zx = max(t - 4, 0)
# heat_energy_rate = coeff * (t - 4) for t>4
# Heat capacity of rock = specific_heat_cap * density = 4
# So temperature of rock should be:
# (1 - porosity) * 4 * T = (1 - porosity) * coeff * (t - 4)
[Mesh]
type = GeneratedMesh
dim = 3
xmin = -10
xmax = 10
zmin = 0
zmax = 1
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
PorousFlowDictator = dictator
[]
[Variables]
[./temperature]
[../]
[]
[Kernels]
[./energy_dot]
type = PorousFlowEnergyTimeDerivative
variable = temperature
[../]
[./phe]
type = PorousFlowPlasticHeatEnergy
variable = temperature
coeff = 8
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[]
[AuxKernels]
[./disp_x]
type = FunctionAux
variable = disp_x
function = 'z*t'
[../]
[]
[UserObjects]
[./dictator]
type = PorousFlowDictator
porous_flow_vars = temperature
number_fluid_phases = 0
number_fluid_components = 0
[../]
[./coh]
type = TensorMechanicsHardeningConstant
value = 1
[../]
[./tanphi]
type = TensorMechanicsHardeningConstant
value = 1.0
[../]
[./tanpsi]
type = TensorMechanicsHardeningConstant
value = 0.0
[../]
[./t_strength]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[./c_strength]
type = TensorMechanicsHardeningConstant
value = 10
[../]
[]
[Materials]
[./rock_internal_energy]
type = PorousFlowMatrixInternalEnergy
specific_heat_capacity = 2
density = 2
[../]
[./temp]
type = PorousFlowTemperature
temperature = temperature
[../]
[./porosity]
type = PorousFlowPorosityConst
porosity = 0.7
[../]
[./phe]
type = ComputePlasticHeatEnergy
[../]
[./elasticity_tensor]
type = ComputeElasticityTensor
fill_method = symmetric_isotropic
C_ijkl = '0.5 0.25'
[../]
[./strain]
type = ComputeIncrementalSmallStrain
displacements = 'disp_x disp_y disp_z'
[../]
[./admissible]
type = ComputeMultipleInelasticStress
inelastic_models = mc
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedWeakPlaneStressUpdate
cohesion = coh
tan_friction_angle = tanphi
tan_dilation_angle = tanpsi
tensile_strength = t_strength
compressive_strength = c_strength
tip_smoother = 0
smoothing_tol = 1
yield_function_tol = 1E-10
perfect_guess = true
[../]
[]
[Postprocessors]
[./temp]
type = PointValue
point = '0 0 0'
variable = temperature
[../]
[]
[Preconditioning]
[./andy]
type = SMP
full = true
petsc_options_iname = '-ksp_type -pc_type -snes_atol -snes_rtol -snes_max_it'
petsc_options_value = 'bcgs bjacobi 1E-15 1E-10 10000'
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
dt = 1
end_time = 10
[]
[Outputs]
file_base = shear01
csv = true
[]
modules/tensor_mechanics/test/tests/creep_tangent_operator/creep.i
[Mesh]
type = GeneratedMesh
dim = 2
nx = 2
ny = 2
second_order = true
[]
[GlobalParams]
displacements = 'disp_x disp_y'
volumetric_locking_correction = false
[]
[Functions]
[./pull]
type = PiecewiseLinear
x = '0 10'
y = '0 1e-3'
[../]
[]
[Modules/TensorMechanics/Master]
[./all]
strain = FINITE
add_variables = true
use_displaced_mesh = true
use_finite_deform_jacobian = true
generate_output = 'hydrostatic_stress'
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 1e10
poissons_ratio = 0.3
[../]
[./elastic_strain]
type = ComputeMultipleInelasticStress
# inelastic_models = ''
tangent_operator = nonlinear
[../]
[./creep_ten]
type = PowerLawCreepStressUpdate
coefficient = 10e-24
n_exponent = 4
activation_energy = 0
base_name = creep_ten
[../]
[./creep_ten2]
type = PowerLawCreepStressUpdate
coefficient = 10e-24
n_exponent = 4
activation_energy = 0
base_name = creep_ten2
[../]
[./creep_one]
type = PowerLawCreepStressUpdate
coefficient = 1e-24
n_exponent = 4
activation_energy = 0
base_name = creep_one
[../]
[./creep_nine]
type = PowerLawCreepStressUpdate
coefficient = 9e-24
n_exponent = 4
activation_energy = 0
base_name = creep_nine
[../]
[./creep_zero]
type = PowerLawCreepStressUpdate
coefficient = 0e-24
n_exponent = 4
activation_energy = 0
base_name = creep_zero
[../]
[]
[BCs]
[./no_disp_x]
type = DirichletBC
variable = disp_x
boundary = left
value = 0.0
[../]
[./no_disp_y]
type = DirichletBC
variable = disp_y
boundary = bottom
value = 0.0
[../]
[./pull_disp_y]
type = FunctionDirichletBC
variable = disp_y
boundary = top
function = pull
[../]
[]
[Preconditioning]
[./smp]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
petsc_options_iname = '-pc_type'
petsc_options_value = 'lu'
line_search = 'none'
nl_rel_tol = 1e-5
num_steps = 5
dt = 1e-1
[]
[Postprocessors]
[./max_disp_x]
type = ElementExtremeValue
variable = disp_x
[../]
[./max_disp_y]
type = ElementExtremeValue
variable = disp_y
[../]
[./max_hydro]
type = ElementAverageValue
variable = hydrostatic_stress
[../]
[./dt]
type = TimestepSize
[../]
[./num_lin]
type = NumLinearIterations
outputs = console
[../]
[./num_nonlin]
type = NumNonlinearIterations
outputs = console
[../]
[]
[Outputs]
csv = true
perf_graph = true
[]
[Debug]
show_var_residual_norms = true
[]
Child Objects
- modules/tensor_mechanics/include/materials/ComputeSmearedCrackingStress.h
- modules/tensor_mechanics/include/materials/ComputeMultipleInelasticCosseratStress.h
modules/tensor_mechanics/include/materials/ComputeSmearedCrackingStress.h
// This file is part of the MOOSE framework
// https://www.mooseframework.org
//
// All rights reserved, see COPYRIGHT for full restrictions
// https://github.com/idaholab/moose/blob/master/COPYRIGHT
//
// Licensed under LGPL 2.1, please see LICENSE for details
// https://www.gnu.org/licenses/lgpl-2.1.html
#pragma once
#include "ColumnMajorMatrix.h"
#include "ComputeMultipleInelasticStress.h"
#include "SmearedCrackSofteningBase.h"
#include "Function.h"
class ComputeSmearedCrackingStress;
template <>
InputParameters validParams<ComputeSmearedCrackingStress>();
/**
* ComputeSmearedCrackingStress computes the stress for a finite strain
* material with smeared cracking
*/
class ComputeSmearedCrackingStress : public ComputeMultipleInelasticStress
{
public:
static InputParameters validParams();
ComputeSmearedCrackingStress(const InputParameters & parameters);
virtual void initialSetup() override;
virtual void initQpStatefulProperties() override;
virtual void computeQpStress() override;
protected:
/**
* Update the local elasticity tensor (_local_elasticity_tensor)
* due to the effects of cracking.
*/
void updateLocalElasticityTensor();
/**
* Update all cracking-related state variables and the stress
* tensor due to cracking in all directions.
*/
virtual void updateCrackingStateAndStress();
/**
* Compute the effect of the cracking release model on the stress
* and stiffness in the direction of a single crack.
* @param i Index of current crack direction
* @param sigma Stress in direction of crack
* @param stiffness_ratio Ratio of damaged to original stiffness
* in cracking direction
* @param strain_in_crack_dir Strain in the current crack direction
* @param cracking_stress Threshold tensile stress for crack initiation
* @param cracking_alpha Initial slope of exponential softening model
* @param youngs_modulus Young's modulus
*/
virtual void computeCrackingRelease(int i,
Real & sigma,
Real & stiffness_ratio,
const Real strain_in_crack_dir,
const Real cracking_stress,
const Real cracking_alpha,
const Real youngs_modulus);
/**
* Get the number of known crack directions. This includes cracks
* in prescribed directions (even if not yet active) and active
* cracks in other directions.
* @return number of known crack directions
*/
virtual unsigned int getNumKnownCrackDirs() const;
/**
* Compute the crack strain in the crack coordinate system. Also
* computes the crack orientations, and stores in _crack_rotation.
* @param strain_in_crack_dir Computed strains in crack directions
*/
void computeCrackStrainAndOrientation(RealVectorValue & strain_in_crack_dir);
/**
* Updates the full stress tensor to account for the effect of cracking
* using the provided stresses in the crack directions. The tensor is
* rotated into the crack coordinates, modified, and rotated back.
* @param tensor Stress tensor to be updated
* @param sigma Vector of stresses in crack directions
*/
void updateStressTensorForCracking(RankTwoTensor & tensor, const RealVectorValue & sigma);
/**
* Check to see whether there was cracking in any diretion in the previous
* time step.
* @return true if cracked, false if not cracked
*/
bool previouslyCracked();
/// Enum defining the crack release model
const enum class CrackingRelease { abrupt, exponential, power } _cracking_release;
///@{ Input parameters for smeared crack models
/// Ratio of the residual stress after being fully cracked to the tensile
/// cracking threshold stress
const Real _cracking_residual_stress;
/// Threshold at which cracking initiates if tensile stress exceeds it
const VariableValue & _cracking_stress;
/// User-prescribed cracking directions
std::vector<unsigned int> _prescribed_crack_directions;
/// Maximum number of cracks permitted at a material point
const unsigned int _max_cracks;
/// Defines transition to changed stiffness during unloading
const Real _cracking_neg_fraction;
/// Controls slope of exponential softening curve
const Real _cracking_beta;
/// Controls the amount of shear retained
const Real _shear_retention_factor;
/// Controls the maximum amount that the damaged elastic stress is corrected
/// to folow the release model during a time step
const Real _max_stress_correction;
///@}
//@{ Damage (goes from 0 to 1) in crack directions
MaterialProperty<RealVectorValue> & _crack_damage;
const MaterialProperty<RealVectorValue> & _crack_damage_old;
///@}
/// Vector of values going from 1 to 0 as crack damage accumulates. Legacy
/// property for backward compatibility -- remove in the future.
MaterialProperty<RealVectorValue> & _crack_flags;
//@{ Rotation tensor used to rotate tensors into crack local coordinates
MaterialProperty<RankTwoTensor> & _crack_rotation;
const MaterialProperty<RankTwoTensor> & _crack_rotation_old;
///@}
//@{ Strain in direction of crack upon crack initiation
MaterialProperty<RealVectorValue> & _crack_initiation_strain;
const MaterialProperty<RealVectorValue> & _crack_initiation_strain_old;
///@}
//@{ Maximum strain in direction of crack
MaterialProperty<RealVectorValue> & _crack_max_strain;
const MaterialProperty<RealVectorValue> & _crack_max_strain_old;
///@}
//@{ Variables used by multiple methods within the calculation for a single material point
RankFourTensor _local_elasticity_tensor;
///@}
/// The user-supplied list of softening models to be used in the 3 crack directions
std::vector<SmearedCrackSofteningBase *> _softening_models;
};
modules/tensor_mechanics/include/materials/ComputeMultipleInelasticCosseratStress.h
// This file is part of the MOOSE framework
// https://www.mooseframework.org
//
// All rights reserved, see COPYRIGHT for full restrictions
// https://github.com/idaholab/moose/blob/master/COPYRIGHT
//
// Licensed under LGPL 2.1, please see LICENSE for details
// https://www.gnu.org/licenses/lgpl-2.1.html
#pragma once
#include "ComputeMultipleInelasticStress.h"
class ComputeMultipleInelasticCosseratStress;
template <>
InputParameters validParams<ComputeMultipleInelasticCosseratStress>();
/**
* ComputeMultipleInelasticStress computes the stress, the consistent tangent
* operator (or an approximation to it), and a decomposition of the strain
* into elastic and inelastic parts. By default finite strains are assumed.
*
* Cosserat couple-stress, and the cosserat version of the consistent
* tangent operator are also computed, but only using Cosserat elasticity.
*
* The elastic strain is calculated by subtracting the computed inelastic strain
* increment tensor from the mechanical strain tensor. Mechanical strain is
* considered as the sum of the elastic and inelastic (plastic, creep, ect) strains.
*
* This material is used to call the recompute iterative materials of a number
* of specified inelastic models that inherit from StressUpdateBase. It iterates
* over the specified inelastic models until the change in stress is within
* a user-specified tolerance, in order to produce the stress, the consistent
* tangent operator and the elastic and inelastic strains for the time increment.
*/
class ComputeMultipleInelasticCosseratStress : public ComputeMultipleInelasticStress
{
public:
static InputParameters validParams();
ComputeMultipleInelasticCosseratStress(const InputParameters & parameters);
protected:
virtual void initQpStatefulProperties() override;
virtual void computeQpStress() override;
virtual void computeQpJacobianMult() override;
/**
* The current Cosserat models do not know they might be using the
* "host" version of the elasticity tensor during the
* return-map process. Therefore, they compute the incorrect
* elastic/inelastic strain decomposition. Overriding this
* method allows the correction to be made.
*/
virtual void computeAdmissibleState(unsigned model_number,
RankTwoTensor & elastic_strain_increment,
RankTwoTensor & inelastic_strain_increment,
RankFourTensor & consistent_tangent_operator) override;
/// The Cosserat curvature strain
const MaterialProperty<RankTwoTensor> & _curvature;
/// The Cosserat elastic flexural rigidity tensor
const MaterialProperty<RankFourTensor> & _elastic_flexural_rigidity_tensor;
/// the Cosserat couple-stress
MaterialProperty<RankTwoTensor> & _couple_stress;
/// the old value of Cosserat couple-stress
const MaterialProperty<RankTwoTensor> & _couple_stress_old;
/// derivative of couple-stress w.r.t. curvature
MaterialProperty<RankFourTensor> & _Jacobian_mult_couple;
/// Inverse of the elasticity tensor
const MaterialProperty<RankFourTensor> & _compliance;
};
References
- Juan C Simo and Robert Leroy Taylor.
Consistent tangent operators for rate-independent elastoplasticity.
Computer Methods in Applied Mechanics and Engineering, 48(1):101–118, 1985.[BibTeX]
@article{simo1985cto, author = "Simo, Juan C and Taylor, Robert Leroy", title = "Consistent tangent operators for rate-independent elastoplasticity", journal = "Computer Methods in Applied Mechanics and Engineering", volume = "48", number = "1", pages = "101--118", year = "1985", publisher = "Elsevier" }