- blockThe blocks around which to create sidesets
C++ Type:std::vector
Description:The blocks around which to create sidesets
- inputThe mesh we want to modify
C++ Type:MeshGeneratorName
Description:The mesh we want to modify
- new_boundaryThe list of boundary IDs to create on the supplied subdomain
C++ Type:std::vector
Description:The list of boundary IDs to create on the supplied subdomain
SideSetsAroundSubdomainGenerator
Adds element faces that are on the exterior of the given block to the sidesets specified
Input Parameters
- fixed_normalFalseThis Boolean determines whether we fix our normal or allow it to vary to "paint" around curves
Default:False
C++ Type:bool
Options:
Description:This Boolean determines whether we fix our normal or allow it to vary to "paint" around curves
- normalIf supplied, only faces with normal equal to this, up to normal_tol, will be added to the sidesets specified
C++ Type:libMesh::Point
Options:
Description:If supplied, only faces with normal equal to this, up to normal_tol, will be added to the sidesets specified
- normal_tol0.1If normal is supplied then faces are only added if face_normal.normal_hat >= 1 - normal_tol, where normal_hat = normal/|normal|
Default:0.1
C++ Type:double
Options:
Description:If normal is supplied then faces are only added if face_normal.normal_hat >= 1 - normal_tol, where normal_hat = normal/|normal|
- replaceFalseIf true, replace the old sidesets. If false, the current sidesets (if any) will be preserved.
Default:False
C++ Type:bool
Options:
Description:If true, replace the old sidesets. If false, the current sidesets (if any) will be preserved.
- variance0.1The variance [0.0 - 1.0] allowed when comparing normals
Default:0.1
C++ Type:double
Options:
Description:The variance [0.0 - 1.0] allowed when comparing normals
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.
Advanced Parameters
Input Files
- modules/porous_flow/test/tests/actions/basicthm_hm.i
- modules/tensor_mechanics/examples/coal_mining/cosserat_mc_wp_sticky_longitudinal.i
- modules/heat_conduction/test/tests/heat_conduction/min_gap/min_gap.i
- modules/porous_flow/test/tests/actions/basicthm_th.i
- modules/heat_conduction/test/tests/sideset_heat_transfer/cfem_gap.i
- modules/tensor_mechanics/examples/coal_mining/cosserat_wp_only.i
- test/tests/meshgenerators/sideset_around_subdomain_generator/around.i
- modules/tensor_mechanics/examples/coal_mining/coarse.i
- modules/tensor_mechanics/examples/coal_mining/cosserat_elastic.i
- modules/porous_flow/test/tests/actions/basicthm_thm.i
- modules/porous_flow/test/tests/actions/basicthm_h.i
- modules/porous_flow/examples/coal_mining/fine_with_fluid.i
- modules/porous_flow/examples/coal_mining/coarse_with_fluid.i
- modules/tensor_mechanics/examples/coal_mining/cosserat_mc_wp.i
- modules/tensor_mechanics/examples/coal_mining/cosserat_mc_wp_sticky.i
- test/tests/meshgenerators/sideset_around_subdomain_generator/sideset_around_subdomain.i
- test/tests/meshgenerators/sideset_around_subdomain_generator/around_normals_generator.i
- modules/tensor_mechanics/examples/coal_mining/fine.i
- test/tests/meshgenerators/sideset_around_subdomain_generator/around_multi_created_subdomain.i
- modules/tensor_mechanics/examples/coal_mining/cosserat_mc_only.i
modules/porous_flow/test/tests/actions/basicthm_hm.i
# PorousFlowBasicTHM action with coupling_type = HydroMechanicalGenerator
[Mesh]
[gen]
type = GeneratedMeshGenerator
dim = 2
nx = 10
ny = 3
xmax = 10
ymax = 3
[]
[./aquifer]
input = gen
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '0 1 0'
top_right = '10 2 0'
[../]
[./injection_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'injection_area'
normal = '-1 0 0'
input = 'aquifer'
[../]
[./outflow_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'outflow_area'
normal = '1 0 0'
input = 'injection_area'
[../]
[./rename]
type = RenameBlockGenerator
old_block_id = '0 1'
new_block_name = 'caprock aquifer'
input = 'outflow_area'
[../]
[]
[GlobalParams]
PorousFlowDictator = dictator
displacements = 'disp_x disp_y'
biot_coefficient = 1.0
[]
[Variables]
[./porepressure]
initial_condition = 1e6
[../]
[./disp_x]
scaling = 1e-10
[../]
[./disp_y]
scaling = 1e-10
[../]
[]
[AuxVariables]
[./temperature]
initial_condition = 293
[../]
[]
[PorousFlowBasicTHM]
porepressure = porepressure
temperature = temperature
coupling_type = HydroMechanical
gravity = '0 0 0'
fp = simple_fluid
use_displaced_mesh = false
add_stress_aux = false
[]
[BCs]
[./constant_injection_porepressure]
type = DirichletBC
variable = porepressure
value = 1.5e6
boundary = injection_area
[../]
[./constant_outflow_porepressure]
type = PorousFlowPiecewiseLinearSink
variable = porepressure
boundary = outflow_area
pt_vals = '0 1e9'
multipliers = '0 1e9'
flux_function = 1e-6
PT_shift = 1e6
[../]
[./top_bottom]
type = DirichletBC
variable = disp_y
value = 0
boundary = 'top bottom'
[../]
[./right]
type = DirichletBC
variable = disp_x
value = 0
boundary = right
[../]
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
[../]
[../]
[]
[Materials]
[./porosity]
type = PorousFlowPorosity
porosity_zero = 0.1
[../]
[./biot_modulus]
type = PorousFlowConstantBiotModulus
solid_bulk_compliance = 2e-7
fluid_bulk_modulus = 1e7
[../]
[./permeability_aquifer]
type = PorousFlowPermeabilityConst
block = aquifer
permeability = '1e-13 0 0 0 1e-13 0 0 0 1e-13'
[../]
[./permeability_caprock]
type = PorousFlowPermeabilityConst
block = caprock
permeability = '1e-15 0 0 0 1e-15 0 0 0 1e-15'
[../]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 5e9
poissons_ratio = 0.0
[../]
[./strain]
type = ComputeSmallStrain
[../]
[./stress]
type = ComputeLinearElasticStress
[../]
[]
[Preconditioning]
[./basic]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
end_time = 1e4
dt = 1e3
nl_abs_tol = 1e-14
nl_rel_tol = 1e-14
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/examples/coal_mining/cosserat_mc_wp_sticky_longitudinal.i
# Strata deformation and fracturing around a coal mine
#
# A 2D geometry is used that simulates a longitudinal section of
# the coal mine. The model is actually 3D, but the "x"
# dimension is only 10m long, meshed with 1 element, and
# there is no "x" displacement. The mine is 400m deep
# and just the roof is studied (0<=z<=400). The model sits
# between -300<=y<=1800. The excavation sits in 0<=y<=1500. The
# excavation height is 3m (ie, the excavation lies within
# 0<=z<=3).
#
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions for this elastic simulation are:
# - disp_x = 0 everywhere
# - disp_y = 0 at y=-300 and y=1800
# - disp_z = 0 at z=0, but there is a time-dependent
# Young's modulus that simulates excavation
# - wc_x = 0 at y=300 and y=1800.
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = -0.025*(300-z) MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 3 MPa
# MC friction angle = 37 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa
#
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
xmin = -5
xmax = 5
nz = 40
zmin = 0
zmax = 400
bias_z = 1.1
ny = 140 # 15m elements
ymin = -300
ymax = 1800
[]
[left]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 11
normal = '0 -1 0'
input = generated_mesh
[]
[right]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 12
normal = '0 1 0'
input = left
[]
[front]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 13
normal = '-1 0 0'
input = right
[]
[back]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 14
normal = '1 0 0'
input = front
[]
[top]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 15
normal = '0 0 1'
input = back
[]
[bottom]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 16
normal = '0 0 -1'
input = top
[]
[excav]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '-5 0 0'
top_right = '5 1500 3'
input = bottom
[]
[roof]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 18
normal = '0 0 1'
input = excav
[]
[]
[GlobalParams]
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[]
[Kernels]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./wc_y]
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
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_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
index_j = 0
[../]
[./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_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = '11 12'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = '16'
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = '11 12'
value = 0.0
[../]
[./roof]
type = StickyBC
variable = disp_z
min_value = -3.0
boundary = '18'
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '-0.8*2500*10E-6*(400-z)'
[../]
[./ini_zz]
type = ParsedFunction
value = '-2500*10E-6*(400-z)'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval slope'
vals = '1.0 0 1500.0 1E-9 1 15'
# excavation face at ymin+(ymax-ymin)*min(t/end_t,1)
# slope is the distance over which the modulus reduces from maxval to minval
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,if(y<ymin+(ymax-ymin)*min(t/end_t,1)+slope,minval+(maxval-minval)*(y-(ymin+(ymax-ymin)*min(t/end_t,1)))/slope,maxval))'
[../]
[./density_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval'
vals = '1.0 0 1500.0 0 2500'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,maxval)'
[../]
[]
[UserObjects]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.99 # MPa
value_residual = 3.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1.0
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor_0]
type = ComputeLayeredCosseratElasticityTensor
block = 0
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./elasticity_tensor_1]
type = ComputeLayeredCosseratElasticityTensor
block = 1
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
elasticity_tensor_prefactor = excav_sideways
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
eigenstrain_name = ini_stress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
[../]
[./stress_0]
type = ComputeMultipleInelasticCosseratStress
block = 0
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress_1]
# this is needed so as to correctly apply the initial stress
type = ComputeMultipleInelasticCosseratStress
block = 1
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density_0]
type = GenericConstantMaterial
block = 0
prop_names = density
prop_values = 2500
[../]
[./density_1]
type = GenericFunctionMaterial
block = 1
prop_names = density
prop_values = density_sideways
[../]
[]
[Postprocessors]
[./subs]
type = PointValue
point = '0 0 400'
variable = disp_z
use_displaced_mesh = false
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 100
start_time = 0.0
dt = 0.01 # 1 element per step
end_time = 1.0
[]
[Outputs]
file_base = cosserat_mc_wp_sticky_longitudinal
interval = 1
print_linear_residuals = false
exodus = true
csv = true
console = true
#[./console]
# type = Console
# output_linear = false
#[../]
[]
modules/heat_conduction/test/tests/heat_conduction/min_gap/min_gap.i
[Mesh]
type = MeshGeneratorMesh
displacements = 'disp_x disp_y'
[./left_gen]
type = GeneratedMeshGenerator
dim = 2
nx = 2
ny = 3
xmin = -3
xmax = 0
ymin = -5
ymax = 5
[../]
[./right_gen]
type = GeneratedMeshGenerator
dim = 2
nx = 2
ny = 3
xmin = 3
xmax = 6
ymin = -5
ymax = 5
[../]
[./left_and_right]
type = MeshCollectionGenerator
inputs = 'left_gen right_gen'
[../]
[./leftleft]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = leftleft
normal = '-1 0 0'
input = left_and_right
[../]
[./leftright]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = leftright
normal = '1 0 0'
input = leftleft
[../]
[./right]
type = SubdomainBoundingBoxGenerator
top_right = '6 5 0'
bottom_left = '3 -5 0'
block_id = 1
input = leftright
[../]
[./rightleft]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = rightleft
normal = '-1 0 0'
input = right
[../]
[./rightright]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = rightright
normal = '1 0 0'
input = rightleft
[../]
[]
[Variables]
[./temp]
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./disp_y]
[../]
[./gap_conductance]
order = CONSTANT
family = MONOMIAL
[../]
[]
[Functions]
[./disp_x]
type = ParsedFunction
value = -3+t
[../]
[./left_temp]
type = ParsedFunction
value = 1000+t
[../]
[]
[Kernels]
[./hc]
type = HeatConduction
variable = temp
[../]
[]
[AuxKernels]
[./disp_x]
type = FunctionAux
block = 1
variable = disp_x
function = disp_x
execute_on = 'INITIAL TIMESTEP_END'
[../]
[./gap_conductivity]
type = MaterialRealAux
boundary = leftright
property = gap_conductance
variable = gap_conductance
execute_on = 'INITIAL TIMESTEP_END'
[../]
[]
[BCs]
[./left]
type = FunctionDirichletBC
variable = temp
boundary = leftleft
function = left_temp
[../]
[./right]
type = DirichletBC
variable = temp
boundary = rightright
value = 400
[../]
[]
[ThermalContact]
[./left_to_right]
slave = leftright
quadrature = true
master = rightleft
variable = temp
min_gap = 1
min_gap_order = 1
type = GapHeatTransfer
[../]
[]
[Materials]
[./hcm]
type = HeatConductionMaterial
block = '0 1'
specific_heat = 1
thermal_conductivity = 1
use_displaced_mesh = true
[../]
[]
[Postprocessors]
[./gap_conductance]
type = PointValue
point = '0 0 0'
variable = gap_conductance
[../]
[]
[Executioner]
type = Transient
dt = 0.25
end_time = 3.0
solve_type = 'PJFNK'
[]
[Outputs]
csv = true
execute_on = 'TIMESTEP_END'
[]
modules/porous_flow/test/tests/actions/basicthm_th.i
# PorousFlowBasicTHM action with coupling_type = ThermoHydroGenerator
# (no mechanical effects)
[Mesh]
[gen]
type = GeneratedMeshGenerator
dim = 2
nx = 10
ny = 3
xmax = 10
ymax = 3
[]
[./aquifer]
input = gen
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '0 1 0'
top_right = '10 2 0'
[../]
[./injection_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'injection_area'
normal = '-1 0 0'
input = 'aquifer'
[../]
[./outflow_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'outflow_area'
normal = '1 0 0'
input = 'injection_area'
[../]
[./rename]
type = RenameBlockGenerator
old_block_id = '0 1'
new_block_name = 'caprock aquifer'
input = 'outflow_area'
[../]
[]
[GlobalParams]
PorousFlowDictator = dictator
[]
[Variables]
[./porepressure]
initial_condition = 1e6
[../]
[./temperature]
initial_condition = 293
scaling = 1e-6
[../]
[]
[PorousFlowBasicTHM]
porepressure = porepressure
temperature = temperature
coupling_type = ThermoHydro
gravity = '0 0 0'
fp = simple_fluid
[]
[BCs]
[./constant_injection_porepressure]
type = DirichletBC
variable = porepressure
value = 1.5e6
boundary = injection_area
[../]
[./constant_injection_temperature]
type = DirichletBC
variable = temperature
value = 313
boundary = injection_area
[../]
[./constant_outflow_porepressure]
type = PorousFlowPiecewiseLinearSink
variable = porepressure
boundary = outflow_area
pt_vals = '0 1e9'
multipliers = '0 1e9'
flux_function = 1e-6
PT_shift = 1e6
[../]
[./constant_outflow_temperature]
type = DirichletBC
variable = temperature
value = 293
boundary = outflow_area
[../]
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
[../]
[../]
[]
[Materials]
[./porosity]
type = PorousFlowPorosity
porosity_zero = 0.1
[../]
[./biot_modulus]
type = PorousFlowConstantBiotModulus
biot_coefficient = 0.8
solid_bulk_compliance = 2e-7
fluid_bulk_modulus = 1e7
[../]
[./permeability_aquifer]
type = PorousFlowPermeabilityConst
block = aquifer
permeability = '1e-13 0 0 0 1e-13 0 0 0 1e-13'
[../]
[./permeability_caprock]
type = PorousFlowPermeabilityConst
block = caprock
permeability = '1e-15 0 0 0 1e-15 0 0 0 1e-15'
[../]
[./thermal_expansion]
type = PorousFlowConstantThermalExpansionCoefficient
biot_coefficient = 0.8
drained_coefficient = 0.003
fluid_coefficient = 0.0002
[../]
[./rock_internal_energy]
type = PorousFlowMatrixInternalEnergy
density = 2500.0
specific_heat_capacity = 1200.0
[../]
[./thermal_conductivity]
type = PorousFlowThermalConductivityIdeal
dry_thermal_conductivity = '10 0 0 0 10 0 0 0 10'
block = 'caprock aquifer'
[../]
[]
[Preconditioning]
[./basic]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
end_time = 1e4
dt = 1e3
nl_abs_tol = 1e-15
nl_rel_tol = 1e-14
[]
[Outputs]
exodus = true
[]
modules/heat_conduction/test/tests/sideset_heat_transfer/cfem_gap.i
[Mesh]
# Build 2-by-2 mesh
[mesh]
type = GeneratedMeshGenerator
dim = 2
nx = 2
xmax = 2
ny = 2
ymax = 2
[]
# Create blocs 0, 1, 2, 3
[block_1]
type = SubdomainBoundingBoxGenerator
input = mesh
block_id = 1
bottom_left = '1 0 0'
top_right = '2 1 0'
[]
[block_2]
type = SubdomainBoundingBoxGenerator
input = block_1
block_id = 2
bottom_left = '0 1 0'
top_right = '1 2 0'
[]
[block_3]
type = SubdomainBoundingBoxGenerator
input = block_2
block_id = 3
bottom_left = '1 1 0'
top_right = '2 2 0'
[]
# Create inner sidesets
[interface_01]
type = SideSetsBetweenSubdomainsGenerator
input = block_3
master_block = 0
paired_block = 1
new_boundary = 'interface_01'
[]
[interface_13]
type = SideSetsBetweenSubdomainsGenerator
input = interface_01
master_block = 1
paired_block = 3
new_boundary = 'interface_13'
[]
[interface_32]
type = SideSetsBetweenSubdomainsGenerator
input = interface_13
master_block = 3
paired_block = 2
new_boundary = 'interface_32'
[]
[interface_20]
type = SideSetsBetweenSubdomainsGenerator
input = interface_32
master_block = 2
paired_block = 0
new_boundary = 'interface_20'
[]
# Create outer boundaries
[boundary_left_0]
type = SideSetsAroundSubdomainGenerator
input = interface_20
block = 0
normal = '-1 0 0'
new_boundary = 'left_0'
[]
[boundary_bot_0]
type = SideSetsAroundSubdomainGenerator
input = boundary_left_0
block = 0
normal = '0 -1 0'
new_boundary = 'bot_0'
[]
[boundary_bot_1]
type = SideSetsAroundSubdomainGenerator
input = boundary_bot_0
block = 1
normal = '0 -1 0'
new_boundary = 'bot_1'
[]
[boundary_right_1]
type = SideSetsAroundSubdomainGenerator
input = boundary_bot_1
block = 1
normal = '1 0 0'
new_boundary = 'right_1'
[]
[boundary_right_3]
type = SideSetsAroundSubdomainGenerator
input = boundary_right_1
block = 3
normal = '1 0 0'
new_boundary = 'right_3'
[]
[boundary_top_3]
type = SideSetsAroundSubdomainGenerator
input = boundary_right_3
block = 3
normal = '0 1 0'
new_boundary = 'top_3'
[]
[boundary_top_2]
type = SideSetsAroundSubdomainGenerator
input = boundary_top_3
block = 2
normal = '0 1 0'
new_boundary = 'top_2'
[]
[boundary_left_2]
type = SideSetsAroundSubdomainGenerator
input = boundary_top_2
block = 2
normal = '-1 0 0'
new_boundary = 'left_2'
[]
uniform_refine = 4
[]
[Variables]
# Need to have variable for each block to allow discontinuity
[T0]
block = 0
[]
[T1]
block = 1
[]
[T2]
block = 2
[]
[T3]
block = 3
[]
[]
[Kernels]
# Diffusion kernel for each block's variable
[diff_0]
type = MatDiffusion
variable = T0
diffusivity = conductivity
block = 0
[]
[diff_1]
type = MatDiffusion
variable = T1
diffusivity = conductivity
block = 1
[]
[diff_2]
type = MatDiffusion
variable = T2
diffusivity = conductivity
block = 2
[]
[diff_3]
type = MatDiffusion
variable = T3
diffusivity = conductivity
block = 3
[]
# Source for two of the blocks
[source_0]
type = BodyForce
variable = T0
value = 5e5
block = '0'
[]
[source_3]
type = BodyForce
variable = T3
value = 5e5
block = '3'
[]
[]
[InterfaceKernels]
# Side set kernel to represent heat transfer across blocks
# Automatically uses the materials defined in SideSetHeatTransferMaterial
[gap_01]
type = SideSetHeatTransferKernel
# This variable defined on a given block must match the master_block given when the side set was generated
variable = T0
# This variable defined on a given block must match the paired_block given when the side set was generated
neighbor_var = T1
boundary = 'interface_01'
[]
[gap_13]
type = SideSetHeatTransferKernel
variable = T1
neighbor_var = T3
boundary = 'interface_13'
[]
[gap_32]
type = SideSetHeatTransferKernel
variable = T3
neighbor_var = T2
boundary = 'interface_32'
[]
[gap_20]
type = SideSetHeatTransferKernel
variable = T2
neighbor_var = T0
boundary = 'interface_20'
[]
[]
# Creating auxiliary variable to combine block restricted solutions
# Ignores discontinuity though
[AuxVariables]
[T]
[]
[]
[AuxKernels]
[temp_0]
type = NormalizationAux
variable = T
source_variable = T0
block = 0
[]
[temp_1]
type = NormalizationAux
variable = T
source_variable = T1
block = 1
[]
[temp_2]
type = NormalizationAux
variable = T
source_variable = T2
block = 2
[]
[temp_3]
type = NormalizationAux
variable = T
source_variable = T3
block = 3
[]
[]
[BCs]
# Boundary condition for each block's outer surface
[bc_left_2]
type = DirichletBC
boundary = 'left_2'
variable = T2
value = 300.0
[]
[bc_left_0]
type = DirichletBC
boundary = 'left_0'
variable = T0
value = 300.0
[]
[bc_bot_0]
type = DirichletBC
boundary = 'bot_0'
variable = T0
value = 300.0
[]
[bc_bot_1]
type = DirichletBC
boundary = 'bot_1'
variable = T1
value = 300.0
[]
[./bc_top_2]
type = ConvectiveFluxFunction # (Robin BC)
variable = T2
boundary = 'top_2'
coefficient = 1e3 # W/K/m^2
T_infinity = 600.0
[../]
[./bc_top_3]
type = ConvectiveFluxFunction # (Robin BC)
variable = T3
boundary = 'top_3'
coefficient = 1e3 # W/K/m^2
T_infinity = 600.0
[../]
[./bc_right_3]
type = ConvectiveFluxFunction # (Robin BC)
variable = T3
boundary = 'right_3'
coefficient = 1e3 # W/K/m^2
T_infinity = 600.0
[../]
[./bc_right_1]
type = ConvectiveFluxFunction # (Robin BC)
variable = T1
boundary = 'right_1'
coefficient = 1e3 # W/K/m^2
T_infinity = 600.0
[../]
[]
[Materials]
[fuel]
type = GenericConstantMaterial
prop_names = 'conductivity'
prop_values = 75
block = '0 3'
[]
[mod]
type = GenericConstantMaterial
prop_names = 'conductivity'
prop_values = 7.5
block = '1 2'
[]
# Interface material used for SideSetHeatTransferKernel
# Heat transfer meachnisms ignored if certain properties are not supplied
[gap_mat]
type = SideSetHeatTransferMaterial
boundary = 'interface_01 interface_13 interface_32 interface_20'
conductivity = 0.41
gap_length = 0.002
Tbulk = 750
h_master = 3000
h_neighbor = 3000
emissivity_master = 0.85
emissivity_neighbor = 0.85
[]
[]
[Executioner]
type = Steady
nl_rel_tol = 1e-12
l_tol = 1e-8
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package -ksp_gmres_restart'
petsc_options_value = 'lu superlu_dist 50'
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/examples/coal_mining/cosserat_wp_only.i
# Strata deformation and fracturing around a coal mine
#
# A 2D geometry is used that simulates a transverse section of
# the coal mine. The model is actually 3D, but the "x"
# dimension is only 10m long, meshed with 1 element, and
# there is no "x" displacement. The mine is 300m deep
# and just the roof is studied (0<=z<=300). The model sits
# between 0<=y<=450. The excavation sits in 0<=y<=150. This
# is a "half model": the boundary conditions are such that
# the model simulates an excavation sitting in -150<=y<=150
# inside a model of the region -450<=y<=450. The
# excavation height is 3m (ie, the excavation lies within
# 0<=z<=3). Mining is simulated by moving the excavation's
# roof down, until disp_z=-3 at t=1.
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions are:
# - disp_x = 0 everywhere
# - disp_y = 0 at y=0 and y=450
# - disp_z = 0 for y>150
# - disp_z = -3 at maximum, for 0<=y<=150. See excav function.
# That is, rollers on the sides, free at top, and prescribed at bottom.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = -0.025*(300-z) MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Below you will see Drucker-Prager parameters and AuxVariables, etc.
# These are not actally used in this example.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# Weak-plane cohesion = 0.1 MPa
# Weak-plane friction angle = 20 deg
# Weak-plane dilation angle = 10 deg
# Weak-plane tensile strength = 0.1 MPa
# Weak-plane compressive strength = 100 MPa, varying down to 1 MPa when tensile strain = 1
#
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
xmin = -5
xmax = 5
nz = 40
zmin = 0
zmax = 400
bias_z = 1.1
ny = 30 # make this a multiple of 3, so y=150 is at a node
ymin = 0
ymax = 450
[]
[left]
type = SideSetsAroundSubdomainGenerator
new_boundary = 11
normal = '0 -1 0'
input = generated_mesh
[]
[right]
type = SideSetsAroundSubdomainGenerator
new_boundary = 12
normal = '0 1 0'
input = left
[]
[front]
type = SideSetsAroundSubdomainGenerator
new_boundary = 13
normal = '-1 0 0'
input = right
[]
[back]
type = SideSetsAroundSubdomainGenerator
new_boundary = 14
normal = '1 0 0'
input = front
[]
[top]
type = SideSetsAroundSubdomainGenerator
new_boundary = 15
normal = '0 0 1'
input = back
[]
[bottom]
type = SideSetsAroundSubdomainGenerator
new_boundary = 16
normal = '0 0 -1'
input = top
[]
[excav]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '-5 0 0'
top_right = '5 150 3'
input = bottom
[]
[roof]
type = SideSetsBetweenSubdomainsGenerator
new_boundary = 21
master_block = 0
paired_block = 1
input = excav
[]
[hole]
type = BlockDeletionGenerator
block_id = 1
input = roof
[]
[]
[GlobalParams]
block = 0
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[]
[Kernels]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./wc_y]
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[]
[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
[../]
[./dp_shear]
type = MaterialStdVectorAux
index = 0
property = dp_plastic_internal_parameter
variable = dp_shear
[../]
[./dp_tensile]
type = MaterialStdVectorAux
index = 1
property = dp_plastic_internal_parameter
variable = dp_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./dp_shear_f]
type = MaterialStdVectorAux
index = 0
property = dp_plastic_yield_function
variable = dp_shear_f
[../]
[./dp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = dp_plastic_yield_function
variable = dp_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = '11 12 16 21' # note addition of 16 and 21
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = '16'
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = '11 12'
value = 0.0
[../]
[./roof]
type = FunctionDirichletBC
variable = disp_z
boundary = 21
function = excav_sideways
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '-0.8*2500*10E-6*(400-z)'
[../]
[./ini_zz]
type = ParsedFunction
value = '-2500*10E-6*(400-z)'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax e_h closure_dist'
vals = '1.0 0 150.0 -3.0 15.0'
value = 'e_h*max(min((t/end_t*(ymax-ymin)+ymin-y)/closure_dist,1),0)'
[../]
[./excav_downwards]
type = ParsedFunction
vars = 'end_t ymin ymax e_h closure_dist'
vals = '1.0 0 150.0 -3.0 15.0'
value = 'e_h*t/end_t*max(min(((ymax-ymin)+ymin-y)/closure_dist,1),0)'
[../]
[]
[UserObjects]
[./dp_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.9 # MPa
value_residual = 3.1 # MPa
rate = 1.0
[../]
[./dp_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./dp_dil]
type = TensorMechanicsHardeningConstant
value = 0.65
[../]
[./dp_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.4 # MPa
rate = 1.0
[../]
[./dp_compressive_str]
type = TensorMechanicsHardeningConstant
value = 1.0E3 # Large!
[../]
[./drucker_prager_model]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = dp_coh_strong_harden
mc_friction_angle = dp_fric
mc_dilation_angle = dp_dil
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1.0
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeLayeredCosseratElasticityTensor
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
eigenstrain_name = ini_stress
[../]
[./stress]
type = ComputeMultipleInelasticCosseratStress
block = 0
inelastic_models = 'wp'
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./dp]
type = CappedDruckerPragerCosseratStressUpdate
block = 0
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = dp
DP_model = drucker_prager_model
tensile_strength = dp_tensile_str_strong_harden
compressive_strength = dp_compressive_str
max_NR_iterations = 100000
tip_smoother = 0.1E1
smoothing_tol = 0.1E1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
block = 0
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density]
type = GenericConstantMaterial
prop_names = density
prop_values = 2500
[../]
[]
[Postprocessors]
[./subsidence]
type = PointValue
point = '0 0 400'
variable = disp_z
use_displaced_mesh = false
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 0.2
end_time = 0.2
[]
[Outputs]
file_base = cosserat_wp_only
interval = 1
print_linear_residuals = false
csv = true
exodus = true
[./console]
type = Console
output_linear = false
[../]
[]
test/tests/meshgenerators/sideset_around_subdomain_generator/around.i
[Mesh]
[./fmg]
type = FileMeshGenerator
file = twoblocks.e
[]
[./block_1]
type = SideSetsAroundSubdomainGenerator
input = fmg
block = 'left'
new_boundary = 'hull_1'
[]
[./block_2]
type = SideSetsAroundSubdomainGenerator
input = block_1
block = 'right'
new_boundary = 'hull_2'
[]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/examples/coal_mining/coarse.i
# Strata deformation and fracturing around a coal mine - 3D model
#
# A "half model" is used. The mine is 400m deep and
# just the roof is studied (-400<=z<=0). The mining panel
# sits between 0<=x<=150, and 0<=y<=1000, so this simulates
# a coal panel that is 300m wide and 1000m long. The outer boundaries
# are 1km from the excavation boundaries.
#
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions for this simulation are:
# - disp_x = 0 at x=0 and x=1150
# - disp_y = 0 at y=-1000 and y=1000
# - disp_z = 0 at z=-400, but there is a time-dependent
# Young's modulus that simulates excavation
# - wc_x = 0 at y=-1000 and y=1000
# - wc_y = 0 at x=0 and x=1150
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = 0.025*z MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 3 MPa
# MC friction angle = 37 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa
# WeakPlane cohesion = 0.1 MPa
# WeakPlane friction angle = 30 deg
# WeakPlane dilation angle = 10 deg
# WeakPlane tensile strength = 0.1 MPa
# WeakPlane compressive strength = 100 MPa softening to 1 MPa at strain = 1
#
[Mesh]
[file]
type = FileMeshGenerator
file = mesh/coarse.e
[]
[./xmin]
input = file
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = xmin
normal = '-1 0 0'
[../]
[./xmax]
input = xmin
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = xmax
normal = '1 0 0'
[../]
[./ymin]
input = xmax
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = ymin
normal = '0 -1 0'
[../]
[./ymax]
input = ymin
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = ymax
normal = '0 1 0'
[../]
[./zmax]
input = ymax
type = SideSetsAroundSubdomainGenerator
block = 16
new_boundary = zmax
normal = '0 0 1'
[../]
[./zmin]
input = zmax
type = SideSetsAroundSubdomainGenerator
block = 2
new_boundary = zmin
normal = '0 0 -1'
[../]
[./excav]
type = SubdomainBoundingBoxGenerator
input = zmin
block_id = 1
bottom_left = '0 0 -400'
top_right = '150 1000 -397'
[../]
[./roof]
type = SideSetsAroundSubdomainGenerator
block = 1
input = excav
new_boundary = roof
normal = '0 0 1'
[../]
[]
[GlobalParams]
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[./wc_y]
[../]
[]
[Kernels]
[./cx_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_x
component = 0
[../]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./y_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_y
displacements = 'wc_x wc_y wc_z'
component = 1
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./y_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_y
component = 1
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[]
[AuxVariables]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
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_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
index_j = 0
[../]
[./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_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_x]
type = DirichletBC
variable = disp_x
boundary = 'xmin xmax'
value = 0.0
[../]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = zmin
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_wc_y]
type = DirichletBC
variable = wc_y
boundary = 'xmin xmax'
value = 0.0
[../]
[./roof]
type = StickyBC
variable = disp_z
min_value = -3.0
boundary = roof
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '0.8*2500*10E-6*z'
[../]
[./ini_zz]
type = ParsedFunction
value = '2500*10E-6*z'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval slope'
vals = '17.0 0 1000.0 1E-9 1 60'
# excavation face at ymin+(ymax-ymin)*min(t/end_t,1)
# slope is the distance over which the modulus reduces from maxval to minval
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,if(y<ymin+(ymax-ymin)*min(t/end_t,1)+slope,minval+(maxval-minval)*(y-(ymin+(ymax-ymin)*min(t/end_t,1)))/slope,maxval))'
[../]
[./density_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval'
vals = '17.0 0 1000.0 0 2500'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,maxval)'
[../]
[]
[UserObjects]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.99 # MPa
value_residual = 3.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor_0]
type = ComputeLayeredCosseratElasticityTensor
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./elasticity_tensor_1]
type = ComputeLayeredCosseratElasticityTensor
block = 1
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
elasticity_tensor_prefactor = excav_sideways
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
eigenstrain_name = ini_stress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
[../]
[./stress_0]
type = ComputeMultipleInelasticCosseratStress
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress_1]
type = ComputeMultipleInelasticCosseratStress
block = 1
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density_0]
type = GenericConstantMaterial
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
prop_names = density
prop_values = 2500
[../]
[./density_1]
type = GenericFunctionMaterial
block = 1
prop_names = density
prop_values = density_sideways
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Postprocessors]
[./min_roof_disp]
type = NodalExtremeValue
boundary = roof
value_type = min
variable = disp_z
[../]
[./min_surface_disp]
type = NodalExtremeValue
boundary = zmax
value_type = min
variable = disp_z
[../]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' bjacobi gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 0.5 # this gives min(disp_z)=-4.3, use dt=0.0625 if you want to restrict disp_z>=-3.2
end_time = 17.0
[]
[Outputs]
interval = 1
print_linear_residuals = false
exodus = true
csv = true
console = true
[]
modules/tensor_mechanics/examples/coal_mining/cosserat_elastic.i
# Strata deformation and fracturing around a coal mine
#
# A 2D geometry is used that simulates a transverse section of
# the coal mine. The model is actually 3D, but the "x"
# dimension is only 10m long, meshed with 1 element, and
# there is no "x" displacement. The mine is 400m deep
# and just the roof is studied (0<=z<=400). The model sits
# between 0<=y<=450. The excavation sits in 0<=y<=150. This
# is a "half model": the boundary conditions are such that
# the model simulates an excavation sitting in -150<=y<=150
# inside a model of the region -450<=y<=450. The
# excavation height is 3m (ie, the excavation lies within
# 0<=z<=3).
#
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions for this elastic simulation are:
# - disp_x = 0 everywhere
# - disp_y = 0 at y=0 and y=450
# - disp_z = 0 for y>150
# - wc_x = 0 at y=0 and y=450.
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = -0.025*(300-z) MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# This is an elastic simulation, but the weak-plane and Drucker-Prager
# parameters and AuxVariables may be found below. They are irrelevant
# in this simulation. The weak-plane and Drucker-Prager cohesions,
# tensile strengths and compressive strengths have been set very high
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
#
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
xmin = -5
xmax = 5
nz = 40
zmin = 0
zmax = 403.003
bias_z = 1.1
ny = 30 # make this a multiple of 3, so y=150 is at a node
ymin = 0
ymax = 450
[]
[left]
type = SideSetsAroundSubdomainGenerator
new_boundary = 11
normal = '0 -1 0'
input = generated_mesh
[]
[right]
type = SideSetsAroundSubdomainGenerator
new_boundary = 12
normal = '0 1 0'
input = left
[]
[front]
type = SideSetsAroundSubdomainGenerator
new_boundary = 13
normal = '-1 0 0'
input = right
[]
[back]
type = SideSetsAroundSubdomainGenerator
new_boundary = 14
normal = '1 0 0'
input = front
[]
[top]
type = SideSetsAroundSubdomainGenerator
new_boundary = 15
normal = '0 0 1'
input = back
[]
[bottom]
type = SideSetsAroundSubdomainGenerator
new_boundary = 16
normal = '0 0 -1'
input = top
[]
[excav]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '-5 0 0'
top_right = '5 150 3'
input = bottom
[]
[roof]
type = SideSetsBetweenSubdomainsGenerator
new_boundary = 21
master_block = 0
paired_block = 1
input = excav
[]
[hole]
type = BlockDeletionGenerator
block_id = 1
input = roof
[]
[]
[GlobalParams]
block = 0
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[]
[Kernels]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./wc_y]
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./dp_tensile_f]
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_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
index_j = 0
[../]
[./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_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./dp_shear]
type = MaterialStdVectorAux
index = 0
property = dp_plastic_internal_parameter
variable = dp_shear
[../]
[./dp_tensile]
type = MaterialStdVectorAux
index = 1
property = dp_plastic_internal_parameter
variable = dp_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./dp_shear_f]
type = MaterialStdVectorAux
index = 0
property = dp_plastic_yield_function
variable = dp_shear_f
[../]
[./dp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = dp_plastic_yield_function
variable = dp_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = '11 12'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = '16'
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = '11 12'
value = 0.0
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '-0.8*2500*10E-6*(403.003-z)'
[../]
[./ini_zz]
type = ParsedFunction
value = '-2500*10E-6*(403.003-z)'
[../]
[]
[UserObjects]
[./dp_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.9 # MPa
value_residual = 3.1 # MPa
rate = 1.0
[../]
[./dp_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./dp_dil]
type = TensorMechanicsHardeningConstant
value = 0.65
[../]
[./dp_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.4 # MPa
rate = 1.0
[../]
[./dp_compressive_str]
type = TensorMechanicsHardeningConstant
value = 1.0E3 # Large!
[../]
[./drucker_prager_model]
type = TensorMechanicsPlasticDruckerPrager
mc_cohesion = dp_coh_strong_harden
mc_friction_angle = dp_fric
mc_dilation_angle = dp_dil
internal_constraint_tolerance = 1 # irrelevant here
yield_function_tolerance = 1 # irrelevant here
[../]
[./wp_coh]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[./wp_compressive_str]
type = TensorMechanicsHardeningConstant
value = 1E12
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeLayeredCosseratElasticityTensor
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
eigenstrain_name = ini_stress
[../]
[./stress]
# this is needed so as to correctly apply the initial stress
type = ComputeMultipleInelasticCosseratStress
block = 0
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./dp]
type = CappedDruckerPragerCosseratStressUpdate
block = 0
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = dp
DP_model = drucker_prager_model
tensile_strength = dp_tensile_str_strong_harden
compressive_strength = dp_compressive_str
max_NR_iterations = 100000
tip_smoother = 0.1E1
smoothing_tol = 0.1E1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
block = 0
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str
compressive_strength = wp_compressive_str
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density]
type = GenericConstantMaterial
prop_names = density
prop_values = 2500
[../]
[]
[Postprocessors]
[./subs_max]
type = PointValue
point = '0 0 403.003'
variable = disp_z
use_displaced_mesh = false
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = 'Linear'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 1.0
end_time = 1.0
[]
[Outputs]
file_base = cosserat_elastic
interval = 1
print_linear_residuals = false
exodus = true
csv = true
console = true
#[./console]
# type = Console
# output_linear = false
#[../]
[]
modules/porous_flow/test/tests/actions/basicthm_thm.i
# PorousFlowBasicTHM action with coupling_type = ThermoHydroMechanicalGenerator
[Mesh]
[gen]
type = GeneratedMeshGenerator
dim = 2
nx = 10
ny = 3
xmax = 10
ymax = 3
[]
[./aquifer]
input = gen
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '0 1 0'
top_right = '10 2 0'
[../]
[./injection_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'injection_area'
normal = '-1 0 0'
input = 'aquifer'
[../]
[./outflow_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'outflow_area'
normal = '1 0 0'
input = 'injection_area'
[../]
[./rename]
type = RenameBlockGenerator
old_block_id = '0 1'
new_block_name = 'caprock aquifer'
input = 'outflow_area'
[../]
[]
[GlobalParams]
PorousFlowDictator = dictator
displacements = 'disp_x disp_y'
biot_coefficient = 1.0
[]
[Variables]
[./porepressure]
initial_condition = 1e6
[../]
[./temperature]
initial_condition = 293
scaling = 1e-6
[../]
[./disp_x]
scaling = 1e-6
[../]
[./disp_y]
scaling = 1e-6
[../]
[]
[PorousFlowBasicTHM]
porepressure = porepressure
temperature = temperature
coupling_type = ThermoHydroMechanical
gravity = '0 0 0'
fp = simple_fluid
thermal_eigenstrain_name = thermal_contribution
use_displaced_mesh = false
add_stress_aux = false
[]
[BCs]
[./constant_injection_porepressure]
type = DirichletBC
variable = porepressure
value = 1.5e6
boundary = injection_area
[../]
[./constant_injection_temperature]
type = DirichletBC
variable = temperature
value = 313
boundary = injection_area
[../]
[./constant_outflow_porepressure]
type = PorousFlowPiecewiseLinearSink
variable = porepressure
boundary = outflow_area
pt_vals = '0 1e9'
multipliers = '0 1e9'
flux_function = 1e-6
PT_shift = 1e6
[../]
[./constant_outflow_temperature]
type = DirichletBC
variable = temperature
value = 293
boundary = outflow_area
[../]
[./top_bottom]
type = DirichletBC
variable = disp_y
value = 0
boundary = 'top bottom'
[../]
[./right]
type = DirichletBC
variable = disp_x
value = 0
boundary = right
[../]
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
[../]
[../]
[]
[Materials]
[./porosity]
type = PorousFlowPorosity
porosity_zero = 0.1
[../]
[./biot_modulus]
type = PorousFlowConstantBiotModulus
biot_coefficient = 0.8
solid_bulk_compliance = 2e-7
fluid_bulk_modulus = 1e7
[../]
[./permeability_aquifer]
type = PorousFlowPermeabilityConst
block = aquifer
permeability = '1e-13 0 0 0 1e-13 0 0 0 1e-13'
[../]
[./permeability_caprock]
type = PorousFlowPermeabilityConst
block = caprock
permeability = '1e-15 0 0 0 1e-15 0 0 0 1e-15'
[../]
[./thermal_expansion]
type = PorousFlowConstantThermalExpansionCoefficient
drained_coefficient = 0.003
fluid_coefficient = 0.0002
[../]
[./rock_internal_energy]
type = PorousFlowMatrixInternalEnergy
density = 2500.0
specific_heat_capacity = 1200.0
[../]
[./thermal_conductivity]
type = PorousFlowThermalConductivityIdeal
dry_thermal_conductivity = '10 0 0 0 10 0 0 0 10'
block = 'caprock aquifer'
[../]
[./elasticity_tensor]
type = ComputeIsotropicElasticityTensor
youngs_modulus = 5e9
poissons_ratio = 0.0
[../]
[./strain]
type = ComputeSmallStrain
eigenstrain_names = thermal_contribution
[../]
[./thermal_contribution]
type = ComputeThermalExpansionEigenstrain
temperature = temperature
thermal_expansion_coeff = 0.001
eigenstrain_name = thermal_contribution
stress_free_temperature = 293
[../]
[./stress]
type = ComputeLinearElasticStress
[../]
[]
[Preconditioning]
[./basic]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
end_time = 1e4
dt = 1e3
nl_abs_tol = 1e-12
nl_rel_tol = 1E-10
[]
[Outputs]
exodus = true
[]
modules/porous_flow/test/tests/actions/basicthm_h.i
# PorousFlowBasicTHM action with coupling_type = HydroGenerator
# (no thermal or mechanical effects)
[Mesh]
[gen]
type = GeneratedMeshGenerator
dim = 2
nx = 10
ny = 3
xmax = 10
ymax = 3
[]
[./aquifer]
input = gen
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '0 1 0'
top_right = '10 2 0'
[../]
[./injection_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'injection_area'
normal = '-1 0 0'
input = 'aquifer'
[../]
[./outflow_area]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 'outflow_area'
normal = '1 0 0'
input = 'injection_area'
[../]
[./rename]
type = RenameBlockGenerator
old_block_id = '0 1'
new_block_name = 'caprock aquifer'
input = 'outflow_area'
[../]
[]
[GlobalParams]
PorousFlowDictator = dictator
[]
[Variables]
[./porepressure]
initial_condition = 1e6
[../]
[]
[AuxVariables]
[./temperature]
initial_condition = 293
[../]
[]
[PorousFlowBasicTHM]
porepressure = porepressure
temperature = temperature
coupling_type = Hydro
gravity = '0 0 0'
fp = simple_fluid
[]
[BCs]
[./constant_injection_porepressure]
type = DirichletBC
variable = porepressure
value = 1.5e6
boundary = injection_area
[../]
[./constant_outflow_porepressure]
type = PorousFlowPiecewiseLinearSink
variable = porepressure
boundary = outflow_area
pt_vals = '0 1e9'
multipliers = '0 1e9'
flux_function = 1e-6
PT_shift = 1e6
[../]
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
[../]
[../]
[]
[Materials]
[./porosity]
type = PorousFlowPorosity
porosity_zero = 0.1
[../]
[./biot_modulus]
type = PorousFlowConstantBiotModulus
biot_coefficient = 0.8
solid_bulk_compliance = 2e-7
fluid_bulk_modulus = 1e7
[../]
[./permeability_aquifer]
type = PorousFlowPermeabilityConst
block = aquifer
permeability = '1e-13 0 0 0 1e-13 0 0 0 1e-13'
[../]
[./permeability_caprock]
type = PorousFlowPermeabilityConst
block = caprock
permeability = '1e-15 0 0 0 1e-15 0 0 0 1e-15'
[../]
[]
[Preconditioning]
[./basic]
type = SMP
full = true
[../]
[]
[Executioner]
type = Transient
solve_type = Newton
end_time = 1e4
dt = 1e3
nl_abs_tol = 1e-15
nl_rel_tol = 1E-14
[]
[Outputs]
exodus = true
[]
modules/porous_flow/examples/coal_mining/fine_with_fluid.i
#################################################################
#
# NOTE:
# The mesh for this model is too large for the MOOSE repository
# so is kept in the the large_media submodule
#
#################################################################
#
# Strata deformation and fluid flow aaround a coal mine - 3D model
#
# A "half model" is used. The mine is 400m deep and
# just the roof is studied (-400<=z<=0). The mining panel
# sits between 0<=x<=150, and 0<=y<=1000, so this simulates
# a coal panel that is 300m wide and 1000m long. The outer boundaries
# are 1km from the excavation boundaries.
#
# The excavation takes 0.5 years.
#
# The boundary conditions for this simulation are:
# - disp_x = 0 at x=0 and x=1150
# - disp_y = 0 at y=-1000 and y=1000
# - disp_z = 0 at z=-400, but there is a time-dependent
# Young modulus that simulates excavation
# - wc_x = 0 at y=-1000 and y=1000
# - wc_y = 0 at x=0 and x=1150
# - no flow at x=0, z=-400 and z=0
# - fixed porepressure at y=-1000, y=1000 and x=1150
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# A single-phase unsaturated fluid is used.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa, and time units are measured in years.
#
# The initial porepressure is hydrostatic with P=0 at z=0, so
# Porepressure ~ - 0.01*z MPa, where the fluid has density 1E3 kg/m^3 and
# gravity = = 10 m.s^-2 = 1E-5 MPa m^2/kg.
# To be more accurate, i use
# Porepressure = -bulk * log(1 + g*rho0*z/bulk)
# where bulk=2E3 MPa and rho0=1Ee kg/m^3.
# The initial stress is consistent with the weight force from undrained
# density 2500 kg/m^3, and fluid porepressure, and a Biot coefficient of 0.7, ie,
# stress_zz^effective = 0.025*z + 0.7 * initial_porepressure
# The maximum and minimum principal horizontal effective stresses are
# assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 2 MPa
# MC friction angle = 35 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa
# WeakPlane cohesion = 0.1 MPa
# WeakPlane friction angle = 30 deg
# WeakPlane dilation angle = 10 deg
# WeakPlane tensile strength = 0.1 MPa
# WeakPlane compressive strength = 100 MPa softening to 1 MPa at strain = 1
# Fluid density at zero porepressure = 1E3 kg/m^3
# Fluid bulk modulus = 2E3 MPa
# Fluid viscosity = 1.1E-3 Pa.s = 1.1E-9 MPa.s = 3.5E-17 MPa.year
#
[GlobalParams]
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
PorousFlowDictator = dictator
biot_coefficient = 0.7
[]
[Mesh]
[file]
type = FileMeshGenerator
file = fine.e
[]
[./xmin]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = xmin
normal = '-1 0 0'
input = file
[../]
[./xmax]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = xmax
normal = '1 0 0'
input = xmin
[../]
[./ymin]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = ymin
normal = '0 -1 0'
input = xmax
[../]
[./ymax]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = ymax
normal = '0 1 0'
input = ymin
[../]
[./zmax]
type = SideSetsAroundSubdomainGenerator
block = 30
new_boundary = zmax
normal = '0 0 1'
input = ymax
[../]
[./zmin]
type = SideSetsAroundSubdomainGenerator
block = 2
new_boundary = zmin
normal = '0 0 -1'
input = zmax
[../]
[./excav]
type = SubdomainBoundingBoxGenerator
input = zmin
block_id = 1
bottom_left = '0 0 -400'
top_right = '150 1000 -397'
[../]
[./roof]
type = SideSetsBetweenSubdomainsGenerator
master_block = 3
paired_block = 1
input = excav
new_boundary = roof
[../]
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[./wc_y]
[../]
[./porepressure]
scaling = 1E-5
[../]
[]
[ICs]
[./porepressure]
type = FunctionIC
variable = porepressure
function = ini_pp
[../]
[]
[Kernels]
[./cx_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_x
component = 0
[../]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./y_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_y
displacements = 'wc_x wc_y wc_z'
component = 1
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./y_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_y
component = 1
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[./poro_x]
type = PorousFlowEffectiveStressCoupling
use_displaced_mesh = false
variable = disp_x
component = 0
[../]
[./poro_y]
type = PorousFlowEffectiveStressCoupling
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./poro_z]
type = PorousFlowEffectiveStressCoupling
use_displaced_mesh = false
component = 2
variable = disp_z
[../]
[./poro_vol_exp]
type = PorousFlowMassVolumetricExpansion
use_displaced_mesh = false
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
variable = porepressure
fluid_component = 0
[../]
[./mass0]
type = PorousFlowMassTimeDerivative
use_displaced_mesh = false
fluid_component = 0
variable = porepressure
[../]
[./flux]
type = PorousFlowAdvectiveFlux
use_displaced_mesh = false
variable = porepressure
gravity = '0 0 -10E-6'
fluid_component = 0
[../]
[]
[AuxVariables]
[./saturation]
order = CONSTANT
family = MONOMIAL
[../]
[./darcy_x]
order = CONSTANT
family = MONOMIAL
[../]
[./darcy_y]
order = CONSTANT
family = MONOMIAL
[../]
[./darcy_z]
order = CONSTANT
family = MONOMIAL
[../]
[./porosity]
order = CONSTANT
family = MONOMIAL
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./perm_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./perm_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./perm_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./saturation_water]
type = PorousFlowPropertyAux
variable = saturation
property = saturation
phase = 0
execute_on = timestep_end
[../]
[./darcy_x]
type = PorousFlowDarcyVelocityComponent
variable = darcy_x
gravity = '0 0 -10E-6'
component = x
[../]
[./darcy_y]
type = PorousFlowDarcyVelocityComponent
variable = darcy_y
gravity = '0 0 -10E-6'
component = y
[../]
[./darcy_z]
type = PorousFlowDarcyVelocityComponent
variable = darcy_z
gravity = '0 0 -10E-6'
component = z
[../]
[./porosity]
type = PorousFlowPropertyAux
property = porosity
variable = porosity
execute_on = timestep_end
[../]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
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
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
execute_on = timestep_end
[../]
[./stress_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
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_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
execute_on = timestep_end
[../]
[./stress_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
execute_on = timestep_end
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
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
[../]
[./total_strain_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./total_strain_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_xy
index_i = 0
index_j = 1
execute_on = timestep_end
[../]
[./total_strain_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_xz
index_i = 0
index_j = 2
execute_on = timestep_end
[../]
[./total_strain_yx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yx
index_i = 1
index_j = 0
execute_on = timestep_end
[../]
[./total_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./total_strain_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yz
index_i = 1
index_j = 2
execute_on = timestep_end
[../]
[./total_strain_zx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_zx
index_i = 2
index_j = 0
execute_on = timestep_end
[../]
[./total_strain_zy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_zy
index_i = 2
index_j = 1
execute_on = timestep_end
[../]
[./total_strain_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./perm_xx]
type = PorousFlowPropertyAux
property = permeability
variable = perm_xx
row = 0
column = 0
execute_on = timestep_end
[../]
[./perm_yy]
type = PorousFlowPropertyAux
property = permeability
variable = perm_yy
row = 1
column = 1
execute_on = timestep_end
[../]
[./perm_zz]
type = PorousFlowPropertyAux
property = permeability
variable = perm_zz
row = 2
column = 2
execute_on = timestep_end
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
execute_on = timestep_end
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
execute_on = timestep_end
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
execute_on = timestep_end
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
execute_on = timestep_end
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
execute_on = timestep_end
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
execute_on = timestep_end
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
execute_on = timestep_end
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
execute_on = timestep_end
[../]
[]
[BCs]
[./no_x]
type = DirichletBC
variable = disp_x
boundary = 'xmin xmax'
value = 0.0
[../]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = zmin
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_wc_y]
type = DirichletBC
variable = wc_y
boundary = 'xmin xmax'
value = 0.0
[../]
[./fix_porepressure]
type = FunctionDirichletBC
variable = porepressure
boundary = 'ymin ymax xmax'
function = ini_pp
[../]
[./roof_porepressure]
type = PorousFlowPiecewiseLinearSink
variable = porepressure
pt_vals = '-1E3 1E3'
multipliers = '-1 1'
fluid_phase = 0
flux_function = roof_conductance
boundary = roof
[../]
[./roof]
type = StickyBC
variable = disp_z
min_value = -3.0
boundary = roof
[../]
[]
[Functions]
[./ini_pp]
type = ParsedFunction
vars = 'bulk p0 g rho0'
vals = '2E3 0.0 1E-5 1E3'
value = '-bulk*log(exp(-p0/bulk)+g*rho0*z/bulk)'
[../]
[./ini_xx]
type = ParsedFunction
vars = 'bulk p0 g rho0 biot'
vals = '2E3 0.0 1E-5 1E3 0.7'
value = '0.8*(2500*10E-6*z+biot*(-bulk*log(exp(-p0/bulk)+g*rho0*z/bulk)))'
[../]
[./ini_zz]
type = ParsedFunction
vars = 'bulk p0 g rho0 biot'
vals = '2E3 0.0 1E-5 1E3 0.7'
value = '2500*10E-6*z+biot*(-bulk*log(exp(-p0/bulk)+g*rho0*z/bulk))'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval slope'
vals = '0.5 0 1000.0 1E-9 1 10'
# excavation face at ymin+(ymax-ymin)*min(t/end_t,1)
# slope is the distance over which the modulus reduces from maxval to minval
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,if(y<ymin+(ymax-ymin)*min(t/end_t,1)+slope,minval+(maxval-minval)*(y-(ymin+(ymax-ymin)*min(t/end_t,1)))/slope,maxval))'
[../]
[./density_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval'
vals = '0.5 0 1000.0 0 2500'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,maxval)'
[../]
[./roof_conductance]
type = ParsedFunction
vars = 'end_t ymin ymax maxval minval'
vals = '0.5 0 1000.0 1E7 0'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),maxval,minval)'
[../]
[]
[UserObjects]
[./dictator]
type = PorousFlowDictator
porous_flow_vars = 'porepressure disp_x disp_y disp_z'
number_fluid_phases = 1
number_fluid_components = 1
[../]
[./pc]
type = PorousFlowCapillaryPressureVG
m = 0.5
alpha = 1 # MPa^-1
[../]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.99 # MPa
value_residual = 2.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.61 # 35deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.05
value_residual = 0.05
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.26 # 15deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.05
value_residual = 0.05
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1
internal_limit = 1.0
[../]
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
bulk_modulus = 2E3
density0 = 1000
thermal_expansion = 0
viscosity = 3.5E-17
[../]
[../]
[]
[Materials]
[./temperature]
type = PorousFlowTemperature
[../]
[./eff_fluid_pressure]
type = PorousFlowEffectiveFluidPressure
[../]
[./vol_strain]
type = PorousFlowVolumetricStrain
[../]
[./ppss]
type = PorousFlow1PhaseP
porepressure = porepressure
capillary_pressure = pc
[../]
[./massfrac]
type = PorousFlowMassFraction
[../]
[./simple_fluid]
type = PorousFlowSingleComponentFluid
fp = simple_fluid
phase = 0
[../]
[./porosity_for_aux]
type = PorousFlowPorosity
at_nodes = false
fluid = true
mechanical = true
ensure_positive = true
porosity_zero = 0.02
solid_bulk = 5.3333E3
[../]
[./porosity_bulk]
type = PorousFlowPorosity
fluid = true
mechanical = true
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
ensure_positive = true
porosity_zero = 0.02
solid_bulk = 5.3333E3
[../]
[./porosity_excav]
type = PorousFlowPorosityConst
block = 1
porosity = 1.0
[../]
[./permeability_bulk]
type = PorousFlowPermeabilityKozenyCarman
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
poroperm_function = kozeny_carman_phi0
k0 = 1E-15
phi0 = 0.02
n = 2
m = 2
[../]
[./permeability_excav]
type = PorousFlowPermeabilityConst
block = 1
permeability = '0 0 0 0 0 0 0 0 0'
[../]
[./relperm]
type = PorousFlowRelativePermeabilityCorey
n = 4
s_res = 0.4
sum_s_res = 0.4
phase = 0
[../]
[./elasticity_tensor_0]
type = ComputeLayeredCosseratElasticityTensor
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./elasticity_tensor_1]
type = ComputeLayeredCosseratElasticityTensor
block = 1
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
elasticity_tensor_prefactor = excav_sideways
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
eigenstrain_name = ini_stress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
[../]
[./stress_0]
type = ComputeMultipleInelasticCosseratStress
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress_1]
type = ComputeMultipleInelasticCosseratStress
block = 1
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.05
smoothing_tol = 0.05 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./undrained_density_0]
type = GenericConstantMaterial
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
prop_names = density
prop_values = 2500
[../]
[./undrained_density_1]
type = GenericFunctionMaterial
block = 1
prop_names = density
prop_values = density_sideways
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Postprocessors]
[./min_roof_disp]
type = NodalExtremeValue
boundary = roof
value_type = min
variable = disp_z
[../]
[./min_roof_pp]
type = NodalExtremeValue
boundary = roof
value_type = min
variable = porepressure
[../]
[./min_surface_disp]
type = NodalExtremeValue
boundary = zmax
value_type = min
variable = disp_z
[../]
[./min_surface_pp]
type = NodalExtremeValue
boundary = zmax
value_type = min
variable = porepressure
[../]
[./max_perm_zz]
type = ElementExtremeValue
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
variable = perm_zz
[../]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
# best overall
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = ' lu mumps'
# best if you don't have mumps:
#petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
#petsc_options_value = ' asm 2 lu gmres 200'
# very basic:
#petsc_options_iname = '-pc_type -ksp_type -ksp_gmres_restart'
#petsc_options_value = ' bjacobi gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 200
nl_max_its = 30
start_time = 0.0
dt = 0.0025
end_time = 0.5
[]
[Outputs]
interval = 1
print_linear_residuals = true
exodus = true
csv = true
console = true
[]
modules/porous_flow/examples/coal_mining/coarse_with_fluid.i
# Strata deformation and fluid flow aaround a coal mine - 3D model
#
# A "half model" is used. The mine is 400m deep and
# just the roof is studied (-400<=z<=0). The mining panel
# sits between 0<=x<=150, and 0<=y<=1000, so this simulates
# a coal panel that is 300m wide and 1000m long. The outer boundaries
# are 1km from the excavation boundaries.
#
# The excavation takes 0.5 years.
#
# The boundary conditions for this simulation are:
# - disp_x = 0 at x=0 and x=1150
# - disp_y = 0 at y=-1000 and y=1000
# - disp_z = 0 at z=-400, but there is a time-dependent
# Young modulus that simulates excavation
# - wc_x = 0 at y=-1000 and y=1000
# - wc_y = 0 at x=0 and x=1150
# - no flow at x=0, z=-400 and z=0
# - fixed porepressure at y=-1000, y=1000 and x=1150
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# A single-phase unsaturated fluid is used.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa, and time units are measured in years.
#
# The initial porepressure is hydrostatic with P=0 at z=0, so
# Porepressure ~ - 0.01*z MPa, where the fluid has density 1E3 kg/m^3 and
# gravity = = 10 m.s^-2 = 1E-5 MPa m^2/kg.
# To be more accurate, i use
# Porepressure = -bulk * log(1 + g*rho0*z/bulk)
# where bulk=2E3 MPa and rho0=1Ee kg/m^3.
# The initial stress is consistent with the weight force from undrained
# density 2500 kg/m^3, and fluid porepressure, and a Biot coefficient of 0.7, ie,
# stress_zz^effective = 0.025*z + 0.7 * initial_porepressure
# The maximum and minimum principal horizontal effective stresses are
# assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 2 MPa
# MC friction angle = 35 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa
# WeakPlane cohesion = 0.1 MPa
# WeakPlane friction angle = 30 deg
# WeakPlane dilation angle = 10 deg
# WeakPlane tensile strength = 0.1 MPa
# WeakPlane compressive strength = 100 MPa softening to 1 MPa at strain = 1
# Fluid density at zero porepressure = 1E3 kg/m^3
# Fluid bulk modulus = 2E3 MPa
# Fluid viscosity = 1.1E-3 Pa.s = 1.1E-9 MPa.s = 3.5E-17 MPa.year
#
[GlobalParams]
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
PorousFlowDictator = dictator
biot_coefficient = 0.7
[]
[Mesh]
[file]
type = FileMeshGenerator
file = mesh/coarse.e
[]
[./xmin]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = xmin
normal = '-1 0 0'
input = file
[../]
[./xmax]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = xmax
normal = '1 0 0'
input = xmin
[../]
[./ymin]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = ymin
normal = '0 -1 0'
input = xmax
[../]
[./ymax]
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
new_boundary = ymax
normal = '0 1 0'
input = ymin
[../]
[./zmax]
type = SideSetsAroundSubdomainGenerator
block = 16
new_boundary = zmax
normal = '0 0 1'
input = ymax
[../]
[./zmin]
type = SideSetsAroundSubdomainGenerator
block = 2
new_boundary = zmin
normal = '0 0 -1'
input = zmax
[../]
[./excav]
type = SubdomainBoundingBoxGenerator
input = zmin
block_id = 1
bottom_left = '0 0 -400'
top_right = '150 1000 -397'
[../]
[./roof]
type = SideSetsBetweenSubdomainsGenerator
master_block = 3
paired_block = 1
input = excav
new_boundary = roof
[../]
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[./wc_y]
[../]
[./porepressure]
scaling = 1E-5
[../]
[]
[ICs]
[./porepressure]
type = FunctionIC
variable = porepressure
function = ini_pp
[../]
[]
[Kernels]
[./cx_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_x
component = 0
[../]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./y_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_y
displacements = 'wc_x wc_y wc_z'
component = 1
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./y_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_y
component = 1
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[./poro_x]
type = PorousFlowEffectiveStressCoupling
use_displaced_mesh = false
variable = disp_x
component = 0
[../]
[./poro_y]
type = PorousFlowEffectiveStressCoupling
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./poro_z]
type = PorousFlowEffectiveStressCoupling
use_displaced_mesh = false
component = 2
variable = disp_z
[../]
[./mass0]
type = PorousFlowMassTimeDerivative
use_displaced_mesh = false
fluid_component = 0
variable = porepressure
[../]
[./flux]
type = PorousFlowAdvectiveFlux
use_displaced_mesh = false
variable = porepressure
gravity = '0 0 -10E-6'
fluid_component = 0
[../]
[./poro_vol_exp]
type = PorousFlowMassVolumetricExpansion
use_displaced_mesh = false
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
variable = porepressure
fluid_component = 0
[../]
[]
[AuxVariables]
[./saturation]
order = CONSTANT
family = MONOMIAL
[../]
[./darcy_x]
order = CONSTANT
family = MONOMIAL
[../]
[./darcy_y]
order = CONSTANT
family = MONOMIAL
[../]
[./darcy_z]
order = CONSTANT
family = MONOMIAL
[../]
[./porosity]
order = CONSTANT
family = MONOMIAL
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./total_strain_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./perm_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./perm_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./perm_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[]
[AuxKernels]
[./saturation_water]
type = PorousFlowPropertyAux
variable = saturation
property = saturation
phase = 0
execute_on = timestep_end
[../]
[./darcy_x]
type = PorousFlowDarcyVelocityComponent
variable = darcy_x
gravity = '0 0 -10E-6'
component = x
[../]
[./darcy_y]
type = PorousFlowDarcyVelocityComponent
variable = darcy_y
gravity = '0 0 -10E-6'
component = y
[../]
[./darcy_z]
type = PorousFlowDarcyVelocityComponent
variable = darcy_z
gravity = '0 0 -10E-6'
component = z
[../]
[./porosity]
type = PorousFlowPropertyAux
property = porosity
variable = porosity
execute_on = timestep_end
[../]
[./stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
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
[../]
[./stress_xz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xz
index_i = 0
index_j = 2
execute_on = timestep_end
[../]
[./stress_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
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_yz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yz
index_i = 1
index_j = 2
execute_on = timestep_end
[../]
[./stress_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
execute_on = timestep_end
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
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
[../]
[./total_strain_xx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_xx
index_i = 0
index_j = 0
execute_on = timestep_end
[../]
[./total_strain_xy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_xy
index_i = 0
index_j = 1
execute_on = timestep_end
[../]
[./total_strain_xz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_xz
index_i = 0
index_j = 2
execute_on = timestep_end
[../]
[./total_strain_yx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yx
index_i = 1
index_j = 0
execute_on = timestep_end
[../]
[./total_strain_yy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yy
index_i = 1
index_j = 1
execute_on = timestep_end
[../]
[./total_strain_yz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_yz
index_i = 1
index_j = 2
execute_on = timestep_end
[../]
[./total_strain_zx]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_zx
index_i = 2
index_j = 0
execute_on = timestep_end
[../]
[./total_strain_zy]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_zy
index_i = 2
index_j = 1
execute_on = timestep_end
[../]
[./total_strain_zz]
type = RankTwoAux
rank_two_tensor = total_strain
variable = total_strain_zz
index_i = 2
index_j = 2
execute_on = timestep_end
[../]
[./perm_xx]
type = PorousFlowPropertyAux
property = permeability
variable = perm_xx
row = 0
column = 0
execute_on = timestep_end
[../]
[./perm_yy]
type = PorousFlowPropertyAux
property = permeability
variable = perm_yy
row = 1
column = 1
execute_on = timestep_end
[../]
[./perm_zz]
type = PorousFlowPropertyAux
property = permeability
variable = perm_zz
row = 2
column = 2
execute_on = timestep_end
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
execute_on = timestep_end
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
execute_on = timestep_end
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
execute_on = timestep_end
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
execute_on = timestep_end
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
execute_on = timestep_end
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
execute_on = timestep_end
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
execute_on = timestep_end
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
execute_on = timestep_end
[../]
[]
[BCs]
[./no_x]
type = DirichletBC
variable = disp_x
boundary = 'xmin xmax'
value = 0.0
[../]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = zmin
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_wc_y]
type = DirichletBC
variable = wc_y
boundary = 'xmin xmax'
value = 0.0
[../]
[./fix_porepressure]
type = FunctionDirichletBC
variable = porepressure
boundary = 'ymin ymax xmax'
function = ini_pp
[../]
[./roof_porepressure]
type = PorousFlowPiecewiseLinearSink
variable = porepressure
pt_vals = '-1E3 1E3'
multipliers = '-1 1'
fluid_phase = 0
flux_function = roof_conductance
boundary = roof
[../]
[./roof_bcs]
type = StickyBC
variable = disp_z
min_value = -3.0
boundary = roof
[../]
[]
[Functions]
[./ini_pp]
type = ParsedFunction
vars = 'bulk p0 g rho0'
vals = '2E3 0.0 1E-5 1E3'
value = '-bulk*log(exp(-p0/bulk)+g*rho0*z/bulk)'
[../]
[./ini_xx]
type = ParsedFunction
vars = 'bulk p0 g rho0 biot'
vals = '2E3 0.0 1E-5 1E3 0.7'
value = '0.8*(2500*10E-6*z+biot*(-bulk*log(exp(-p0/bulk)+g*rho0*z/bulk)))'
[../]
[./ini_zz]
type = ParsedFunction
vars = 'bulk p0 g rho0 biot'
vals = '2E3 0.0 1E-5 1E3 0.7'
value = '2500*10E-6*z+biot*(-bulk*log(exp(-p0/bulk)+g*rho0*z/bulk))'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval slope'
vals = '0.5 0 1000.0 1E-9 1 60'
# excavation face at ymin+(ymax-ymin)*min(t/end_t,1)
# slope is the distance over which the modulus reduces from maxval to minval
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,if(y<ymin+(ymax-ymin)*min(t/end_t,1)+slope,minval+(maxval-minval)*(y-(ymin+(ymax-ymin)*min(t/end_t,1)))/slope,maxval))'
[../]
[./density_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval'
vals = '0.5 0 1000.0 0 2500'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,maxval)'
[../]
[./roof_conductance]
type = ParsedFunction
vars = 'end_t ymin ymax maxval minval'
vals = '0.5 0 1000.0 1E7 0'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),maxval,minval)'
[../]
[]
[UserObjects]
[./dictator]
type = PorousFlowDictator
porous_flow_vars = 'porepressure disp_x disp_y disp_z'
number_fluid_phases = 1
number_fluid_components = 1
[../]
[./pc]
type = PorousFlowCapillaryPressureVG
m = 0.5
alpha = 1 # MPa^-1
[../]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.99 # MPa
value_residual = 2.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.61 # 35deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.05
value_residual = 0.05
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.26 # 15deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.05
value_residual = 0.05
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1
internal_limit = 1.0
[../]
[]
[Modules]
[./FluidProperties]
[./simple_fluid]
type = SimpleFluidProperties
bulk_modulus = 2E3
density0 = 1000
thermal_expansion = 0
viscosity = 3.5E-17
[../]
[../]
[]
[Materials]
[./temperature]
type = PorousFlowTemperature
[../]
[./eff_fluid_pressure]
type = PorousFlowEffectiveFluidPressure
[../]
[./vol_strain]
type = PorousFlowVolumetricStrain
[../]
[./ppss]
type = PorousFlow1PhaseP
porepressure = porepressure
capillary_pressure = pc
[../]
[./massfrac]
type = PorousFlowMassFraction
[../]
[./simple_fluid]
type = PorousFlowSingleComponentFluid
fp = simple_fluid
phase = 0
[../]
[./porosity_bulk]
type = PorousFlowPorosity
fluid = true
mechanical = true
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
ensure_positive = true
porosity_zero = 0.02
solid_bulk = 5.3333E3
[../]
[./porosity_excav]
type = PorousFlowPorosityConst
block = 1
porosity = 1.0
[../]
[./permeability_bulk]
type = PorousFlowPermeabilityKozenyCarman
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
poroperm_function = kozeny_carman_phi0
k0 = 1E-15
phi0 = 0.02
n = 2
m = 2
[../]
[./permeability_excav]
type = PorousFlowPermeabilityConst
block = 1
permeability = '0 0 0 0 0 0 0 0 0'
[../]
[./relperm]
type = PorousFlowRelativePermeabilityCorey
n = 4
s_res = 0.4
sum_s_res = 0.4
phase = 0
[../]
[./elasticity_tensor_0]
type = ComputeLayeredCosseratElasticityTensor
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./elasticity_tensor_1]
type = ComputeLayeredCosseratElasticityTensor
block = 1
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
elasticity_tensor_prefactor = excav_sideways
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
eigenstrain_name = ini_stress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
[../]
[./stress_0]
type = ComputeMultipleInelasticCosseratStress
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress_1]
type = ComputeMultipleInelasticCosseratStress
block = 1
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.05
smoothing_tol = 0.05 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./undrained_density_0]
type = GenericConstantMaterial
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
prop_names = density
prop_values = 2500
[../]
[./undrained_density_1]
type = GenericFunctionMaterial
block = 1
prop_names = density
prop_values = density_sideways
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Postprocessors]
[./min_roof_disp]
type = NodalExtremeValue
boundary = roof
value_type = min
variable = disp_z
[../]
[./min_roof_pp]
type = NodalExtremeValue
boundary = roof
value_type = min
variable = porepressure
[../]
[./min_surface_disp]
type = NodalExtremeValue
boundary = zmax
value_type = min
variable = disp_z
[../]
[./min_surface_pp]
type = NodalExtremeValue
boundary = zmax
value_type = min
variable = porepressure
[../]
[./max_perm_zz]
type = ElementExtremeValue
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16'
variable = perm_zz
[../]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
# best overall
# petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
# petsc_options_value = ' lu mumps'
# best if you do not have mumps:
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package'
petsc_options_value = ' lu superlu_dist'
# best if you do not have mumps or superlu_dist:
#petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
#petsc_options_value = ' asm 2 lu gmres 200'
# very basic:
#petsc_options_iname = '-pc_type -ksp_type -ksp_gmres_restart'
#petsc_options_value = ' bjacobi gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 200
nl_max_its = 30
start_time = 0.0
dt = 0.014706
end_time = 0.014706 #0.5
[]
[Outputs]
interval = 1
print_linear_residuals = true
exodus = true
csv = true
console = true
[]
modules/tensor_mechanics/examples/coal_mining/cosserat_mc_wp.i
# Strata deformation and fracturing around a coal mine
#
# A 2D geometry is used that simulates a transverse section of
# the coal mine. The model is actually 3D, but the "x"
# dimension is only 10m long, meshed with 1 element, and
# there is no "x" displacement. The mine is 300m deep
# and just the roof is studied (0<=z<=300). The model sits
# between 0<=y<=450. The excavation sits in 0<=y<=150. This
# is a "half model": the boundary conditions are such that
# the model simulates an excavation sitting in -150<=y<=150
# inside a model of the region -450<=y<=450. The
# excavation height is 3m (ie, the excavation lies within
# 0<=z<=3). Mining is simulated by moving the excavation's
# roof down, until disp_z=-3 at t=1.
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions are:
# - disp_x = 0 everywhere
# - disp_y = 0 at y=0 and y=450
# - disp_z = 0 for y>150
# - disp_z = -3 at maximum, for 0<=y<=150. See excav function.
# That is, rollers on the sides, free at top, and prescribed at bottom.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = -0.025*(300-z) MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 3 MPa
# MC friction angle = 37 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa, varying down to 1 MPa when tensile strain = 1
# WeakPlane cohesion = 0.1 MPa
# WeakPlane friction angle = 30 deg
# WeakPlane dilation angle = 10 deg
# WeakPlane tensile strength = 0.1 MPa
# WeakPlane compressive strength = 100 MPa softening to 1 MPa at strain = 1
#
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
xmin = -5
xmax = 5
nz = 40
zmin = 0
zmax = 400.0
bias_z = 1.1
ny = 30 # make this a multiple of 3, so y=150 is at a node
ymin = 0
ymax = 450
[]
[left]
type = SideSetsAroundSubdomainGenerator
new_boundary = 11
normal = '0 -1 0'
input = generated_mesh
[]
[right]
type = SideSetsAroundSubdomainGenerator
new_boundary = 12
normal = '0 1 0'
input = left
[]
[front]
type = SideSetsAroundSubdomainGenerator
new_boundary = 13
normal = '-1 0 0'
input = right
[]
[back]
type = SideSetsAroundSubdomainGenerator
new_boundary = 14
normal = '1 0 0'
input = front
[]
[top]
type = SideSetsAroundSubdomainGenerator
new_boundary = 15
normal = '0 0 1'
input = back
[]
[bottom]
type = SideSetsAroundSubdomainGenerator
new_boundary = 16
normal = '0 0 -1'
input = top
[]
[excav]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '-5 0 0'
top_right = '5 150 3'
input = bottom
[]
[roof]
type = SideSetsBetweenSubdomainsGenerator
new_boundary = 21
master_block = 0
paired_block = 1
input = excav
[]
[hole]
type = BlockDeletionGenerator
block_id = 1
input = roof
[]
[]
[GlobalParams]
block = 0
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[]
[Kernels]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./wc_y]
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[]
[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
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = '11 12 16 21' # note addition of 16 and 21
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = '16'
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = '11 12'
value = 0.0
[../]
[./roof]
type = FunctionDirichletBC
variable = disp_z
boundary = 21
function = excav_sideways
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '-0.8*2500*10E-6*(400-z)'
[../]
[./ini_zz]
type = ParsedFunction
value = '-2500*10E-6*(400-z)'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax e_h closure_dist'
vals = '1.0 0 150.0 -3.0 15.0'
value = 'e_h*max(min((min(t/end_t,1)*(ymax-ymin)+ymin-y)/closure_dist,1),0)'
[../]
[./excav_downwards]
type = ParsedFunction
vars = 'end_t ymin ymax e_h closure_dist'
vals = '1.0 0 150.0 -3.0 15.0'
value = 'e_h*min(t/end_t,1)*max(min(((ymax-ymin)+ymin-y)/closure_dist,1),0)'
[../]
[]
[UserObjects]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.99 # MPa
value_residual = 3.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeLayeredCosseratElasticityTensor
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
eigenstrain_name = ini_stress
[../]
[./stress]
type = ComputeMultipleInelasticCosseratStress
block = 0
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
block = 0
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 10000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
block = 0
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./density]
type = GenericConstantMaterial
prop_names = density
prop_values = 2500
[../]
[]
[Postprocessors]
[./subsidence]
type = PointValue
point = '0 0 400'
variable = disp_z
use_displaced_mesh = false
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 0.2
end_time = 0.2
[]
[Outputs]
file_base = cosserat_mc_wp
interval = 1
print_linear_residuals = false
csv = true
exodus = true
[./console]
type = Console
output_linear = false
[../]
[]
modules/tensor_mechanics/examples/coal_mining/cosserat_mc_wp_sticky.i
# Strata deformation and fracturing around a coal mine
#
# A 2D geometry is used that simulates a transverse section of
# the coal mine. The model is actually 3D, but the "x"
# dimension is only 10m long, meshed with 1 element, and
# there is no "x" displacement. The mine is 400m deep
# and just the roof is studied (0<=z<=400). The model sits
# between 0<=y<=450. The excavation sits in 0<=y<=150. This
# is a "half model": the boundary conditions are such that
# the model simulates an excavation sitting in -150<=y<=150
# inside a model of the region -450<=y<=450. The
# excavation height is 3m (ie, the excavation lies within
# 0<=z<=3).
#
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions for this elastic simulation are:
# - disp_x = 0 everywhere
# - disp_y = 0 at y=0 and y=450
# - disp_z = 0 at z=0, but there is a time-dependent
# Young's modulus that simulates excavation
# - wc_x = 0 at y=0 and y=450.
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = -0.025*(300-z) MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 3 MPa
# MC friction angle = 37 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa, varying down to 1 MPa when tensile strain = 1
# WeakPlane cohesion = 0.1 MPa
# WeakPlane friction angle = 30 deg
# WeakPlane dilation angle = 10 deg
# WeakPlane tensile strength = 0.1 MPa
# WeakPlane compressive strength = 100 MPa softening to 1 MPa at strain = 1
#
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
xmin = -5
xmax = 5
nz = 40
zmin = 0
zmax = 403.003
bias_z = 1.1
ny = 30 # make this a multiple of 3, so y=150 is at a node
ymin = 0
ymax = 450
[]
[left]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 11
normal = '0 -1 0'
input = generated_mesh
[]
[right]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 12
normal = '0 1 0'
input = left
[]
[front]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 13
normal = '-1 0 0'
input = right
[]
[back]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 14
normal = '1 0 0'
input = front
[]
[top]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 15
normal = '0 0 1'
input = back
[]
[bottom]
type = SideSetsAroundSubdomainGenerator
block = 0
new_boundary = 16
normal = '0 0 -1'
input = top
[]
[excav]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '-5 0 0'
top_right = '5 150 3'
input = bottom
[]
[roof]
type = SideSetsAroundSubdomainGenerator
block = 1
new_boundary = 18
normal = '0 0 1'
input = excav
[]
[]
[GlobalParams]
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[]
[Kernels]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./wc_y]
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
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_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
index_j = 0
[../]
[./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_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = '11 12'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = '16'
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = '11 12'
value = 0.0
[../]
[./roof]
type = StickyBC
variable = disp_z
min_value = -3.0
boundary = '18'
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '-0.8*2500*10E-6*(403.003-z)'
[../]
[./ini_zz]
type = ParsedFunction
value = '-2500*10E-6*(403.003-z)'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval slope'
vals = '1.0 0 150.0 1E-9 1 15'
# excavation face at ymin+(ymax-ymin)*min(t/end_t,1)
# slope is the distance over which the modulus reduces from maxval to minval
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,if(y<ymin+(ymax-ymin)*min(t/end_t,1)+slope,minval+(maxval-minval)*(y-(ymin+(ymax-ymin)*min(t/end_t,1)))/slope,maxval))'
[../]
[./density_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval'
vals = '1.0 0 150.0 0 2500'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,maxval)'
[../]
[]
[UserObjects]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.99 # MPa
value_residual = 3.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor_0]
type = ComputeLayeredCosseratElasticityTensor
block = 0
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./elasticity_tensor_1]
type = ComputeLayeredCosseratElasticityTensor
block = 1
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
elasticity_tensor_prefactor = excav_sideways
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
eigenstrain_name = ini_stress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
[../]
[./stress_0]
# this is needed so as to correctly apply the initial stress
type = ComputeMultipleInelasticCosseratStress
block = 0
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress_1]
type = ComputeMultipleInelasticCosseratStress
block = 1
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density_0]
type = GenericConstantMaterial
block = 0
prop_names = density
prop_values = 2500
[../]
[./density_1]
type = GenericFunctionMaterial
block = 1
prop_names = density
prop_values = density_sideways
[../]
[]
[Postprocessors]
[./subs_max]
type = PointValue
point = '0 0 403.003'
variable = disp_z
use_displaced_mesh = false
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
line_search = bt
nl_abs_tol = 1e-8
nl_rel_tol = 1e-8
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 0.01
end_time = 1.0
[]
[Outputs]
file_base = cosserat_mc_wp_sticky
interval = 1
print_linear_residuals = false
exodus = true
csv = true
console = true
[]
test/tests/meshgenerators/sideset_around_subdomain_generator/sideset_around_subdomain.i
[Mesh]
[./gmg]
type = GeneratedMeshGenerator
dim = 3
xmax = 3
ymax = 3
zmax = 3
nx = 3
ny = 3
nz = 3
[]
[./central_block]
type = SubdomainBoundingBoxGenerator
input = gmg
block_id = 2
bottom_left = '1 1 1'
top_right = '2 2 2'
[]
[./central_boundary]
type = SideSetsAroundSubdomainGenerator
input = central_block
block = 2
new_boundary = 7
[]
[]
[Outputs]
exodus = true
[]
test/tests/meshgenerators/sideset_around_subdomain_generator/around_normals_generator.i
[Mesh]
[./fmg]
type = FileMeshGenerator
file = twoblocks.e
[]
[./top_block1]
type = SideSetsAroundSubdomainGenerator
input = fmg
block = 'left'
new_boundary = 'top_of_left_block'
normal = '0 0 1'
[]
[./bottom_block2]
type = SideSetsAroundSubdomainGenerator
input = top_block1
block = 'right'
new_boundary = 'bottom_of_right_block'
normal = '0 0 -1'
[]
[./right_block1]
type = SideSetsAroundSubdomainGenerator
input = bottom_block2
block = 'left'
new_boundary = 'right_of_left_block'
normal = '1 0 0'
[]
[./right_block2]
type = SideSetsAroundSubdomainGenerator
input = right_block1
block = 'right'
new_boundary = 'right_of_right_block'
normal = '1 0 0'
[]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/examples/coal_mining/fine.i
# Strata deformation and fracturing around a coal mine - 3D model
#
# A "half model" is used. The mine is 400m deep and
# just the roof is studied (-400<=z<=0). The mining panel
# sits between 0<=x<=150, and 0<=y<=1000, so this simulates
# a coal panel that is 300m wide and 1000m long. The outer boundaries
# are 1km from the excavation boundaries.
#
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions for this simulation are:
# - disp_x = 0 at x=0 and x=1150
# - disp_y = 0 at y=-1000 and y=1000
# - disp_z = 0 at z=-400, but there is a time-dependent
# Young's modulus that simulates excavation
# - wc_x = 0 at y=-1000 and y=1000
# - wc_y = 0 at x=0 and x=1150
# That is, rollers on the sides, free at top,
# and prescribed at bottom in the unexcavated portion.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = 0.025*z MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 3 MPa
# MC friction angle = 37 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa
# WeakPlane cohesion = 0.1 MPa
# WeakPlane friction angle = 30 deg
# WeakPlane dilation angle = 10 deg
# WeakPlane tensile strength = 0.1 MPa
# WeakPlane compressive strength = 100 MPa softening to 1 MPa at strain = 1
#
[Mesh]
[file]
type = FileMeshGenerator
file = mesh/fine.e
[]
[./xmin]
input = file
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = xmin
normal = '-1 0 0'
[../]
[./xmax]
input = xmin
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = xmax
normal = '1 0 0'
[../]
[./ymin]
input = xmax
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = ymin
normal = '0 -1 0'
[../]
[./ymax]
input = ymin
type = SideSetsAroundSubdomainGenerator
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
new_boundary = ymax
normal = '0 1 0'
[../]
[./zmax]
input = ymax
type = SideSetsAroundSubdomainGenerator
block = 30
new_boundary = zmax
normal = '0 0 1'
[../]
[./zmin]
input = zmax
type = SideSetsAroundSubdomainGenerator
block = 2
new_boundary = zmin
normal = '0 0 -1'
[../]
[./excav]
type = SubdomainBoundingBoxGenerator
input = zmin
block_id = 1
bottom_left = '0 0 -400'
top_right = '150 1000 -397'
[../]
[./roof]
type = SideSetsAroundSubdomainGenerator
block = 1
input = excav
new_boundary = roof
normal = '0 0 1'
[../]
[]
[GlobalParams]
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_x]
[../]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[./wc_y]
[../]
[]
[Kernels]
[./cx_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_x
component = 0
[../]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./y_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_y
displacements = 'wc_x wc_y wc_z'
component = 1
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./y_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_y
component = 1
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6 # remember this is in MPa
[../]
[]
[AuxVariables]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_xz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yz]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
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_yx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yx
index_i = 1
index_j = 0
[../]
[./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_zx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zx
index_i = 2
index_j = 0
[../]
[./stress_zy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zy
index_i = 2
index_j = 1
[../]
[./stress_zz]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_zz
index_i = 2
index_j = 2
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_x]
type = DirichletBC
variable = disp_x
boundary = 'xmin xmax'
value = 0.0
[../]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = zmin
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = 'ymin ymax'
value = 0.0
[../]
[./no_wc_y]
type = DirichletBC
variable = wc_y
boundary = 'xmin xmax'
value = 0.0
[../]
[./roof]
type = StickyBC
variable = disp_z
min_value = -3.0
boundary = roof
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '0.8*2500*10E-6*z'
[../]
[./ini_zz]
type = ParsedFunction
value = '2500*10E-6*z'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval slope'
vals = '100.0 0 1000.0 1E-9 1 10'
# excavation face at ymin+(ymax-ymin)*min(t/end_t,1)
# slope is the distance over which the modulus reduces from maxval to minval
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,if(y<ymin+(ymax-ymin)*min(t/end_t,1)+slope,minval+(maxval-minval)*(y-(ymin+(ymax-ymin)*min(t/end_t,1)))/slope,maxval))'
[../]
[./density_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax minval maxval'
vals = '100.0 0 1000.0 0 2500'
value = 'if(y<ymin+(ymax-ymin)*min(t/end_t,1),minval,maxval)'
[../]
[]
[UserObjects]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.99 # MPa
value_residual = 3.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor_0]
type = ComputeLayeredCosseratElasticityTensor
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
[../]
[./elasticity_tensor_1]
type = ComputeLayeredCosseratElasticityTensor
block = 1
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3 # MPa
elasticity_tensor_prefactor = excav_sideways
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
eigenstrain_name = ini_stress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
[../]
[./stress_0]
type = ComputeMultipleInelasticCosseratStress
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
inelastic_models = 'mc wp'
cycle_models = true
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./stress_1]
type = ComputeMultipleInelasticCosseratStress
block = 1
inelastic_models = ''
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density_0]
type = GenericConstantMaterial
block = '2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30'
prop_names = density
prop_values = 2500
[../]
[./density_1]
type = GenericFunctionMaterial
block = 1
prop_names = density
prop_values = density_sideways
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Postprocessors]
[./min_roof_disp]
type = NodalExtremeValue
boundary = roof
value_type = min
variable = disp_z
[../]
[./min_surface_disp]
type = NodalExtremeValue
boundary = zmax
value_type = min
variable = disp_z
[../]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' bjacobi gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 0.5
end_time = 100.0
[]
[Outputs]
interval = 1
print_linear_residuals = false
exodus = true
csv = true
console = true
[]
test/tests/meshgenerators/sideset_around_subdomain_generator/around_multi_created_subdomain.i
[Mesh]
[./gmg]
type = GeneratedMeshGenerator
dim = 3
xmin = 0
xmax = 4
nx = 4
ymin = 0
ymax = 4
ny = 4
zmin = 0
zmax = 2
nz = 2
[]
[./subdomains]
type = ElementSubdomainIDGenerator
input = gmg
subdomain_ids = '0 0 0 0
0 0 0 0
1 1 0 0
2 2 2 2
3 3 0 0
3 3 0 0
1 1 0 0
0 0 0 0'
[]
[./interface]
type = SideSetsAroundSubdomainGenerator
input = subdomains
block = '1 2 3'
new_boundary = 'to0'
[]
[]
[Outputs]
exodus = true
[]
modules/tensor_mechanics/examples/coal_mining/cosserat_mc_only.i
# Strata deformation and fracturing around a coal mine
#
# A 2D geometry is used that simulates a transverse section of
# the coal mine. The model is actually 3D, but the "x"
# dimension is only 10m long, meshed with 1 element, and
# there is no "x" displacement. The mine is 300m deep
# and just the roof is studied (0<=z<=300). The model sits
# between 0<=y<=450. The excavation sits in 0<=y<=150. This
# is a "half model": the boundary conditions are such that
# the model simulates an excavation sitting in -150<=y<=150
# inside a model of the region -450<=y<=450. The
# excavation height is 3m (ie, the excavation lies within
# 0<=z<=3). Mining is simulated by moving the excavation's
# roof down, until disp_z=-3 at t=1.
# Time is meaningless in this example
# as quasi-static solutions are sought at each timestep, but
# the number of timesteps controls the resolution of the
# process.
#
# The boundary conditions are:
# - disp_x = 0 everywhere
# - disp_y = 0 at y=0 and y=450
# - disp_z = 0 for y>150
# - disp_z = -3 at maximum, for 0<=y<=150. See excav function.
# That is, rollers on the sides, free at top, and prescribed at bottom.
#
# The small strain formulation is used.
#
# All stresses are measured in MPa. The initial stress is consistent with
# the weight force from density 2500 kg/m^3, ie, stress_zz = -0.025*(300-z) MPa
# where gravity = 10 m.s^-2 = 1E-5 MPa m^2/kg. The maximum and minimum
# principal horizontal stresses are assumed to be equal to 0.8*stress_zz.
#
# Below you will see weak-plane parameters and AuxVariables, etc.
# These are not actally used in this example.
#
# Material properties:
# Young's modulus = 8 GPa
# Poisson's ratio = 0.25
# Cosserat layer thickness = 1 m
# Cosserat-joint normal stiffness = large
# Cosserat-joint shear stiffness = 1 GPa
# MC cohesion = 3 MPa
# MC friction angle = 37 deg
# MC dilation angle = 8 deg
# MC tensile strength = 1 MPa
# MC compressive strength = 100 MPa, varying down to 1 MPa when tensile strain = 1
#
[Mesh]
[generated_mesh]
type = GeneratedMeshGenerator
dim = 3
nx = 1
xmin = -5
xmax = 5
nz = 40
zmin = 0
zmax = 400.0
bias_z = 1.1
ny = 30 # make this a multiple of 3, so y=150 is at a node
ymin = 0
ymax = 450
[]
[left]
type = SideSetsAroundSubdomainGenerator
new_boundary = 11
normal = '0 -1 0'
input = generated_mesh
[]
[right]
type = SideSetsAroundSubdomainGenerator
new_boundary = 12
normal = '0 1 0'
input = left
[]
[front]
type = SideSetsAroundSubdomainGenerator
new_boundary = 13
normal = '-1 0 0'
input = right
[]
[back]
type = SideSetsAroundSubdomainGenerator
new_boundary = 14
normal = '1 0 0'
input = front
[]
[top]
type = SideSetsAroundSubdomainGenerator
new_boundary = 15
normal = '0 0 1'
input = back
[]
[bottom]
type = SideSetsAroundSubdomainGenerator
new_boundary = 16
normal = '0 0 -1'
input = top
[]
[excav]
type = SubdomainBoundingBoxGenerator
block_id = 1
bottom_left = '-5 0 0'
top_right = '5 150 3'
input = bottom
[]
[roof]
type = SideSetsBetweenSubdomainsGenerator
new_boundary = 21
master_block = 0
paired_block = 1
input = excav
[]
[hole]
type = BlockDeletionGenerator
block_id = 1
input = roof
[]
[]
[GlobalParams]
block = 0
perform_finite_strain_rotations = false
displacements = 'disp_x disp_y disp_z'
Cosserat_rotations = 'wc_x wc_y wc_z'
[]
[Variables]
[./disp_y]
[../]
[./disp_z]
[../]
[./wc_x]
[../]
[]
[Kernels]
[./cy_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_y
component = 1
[../]
[./cz_elastic]
type = CosseratStressDivergenceTensors
use_displaced_mesh = false
variable = disp_z
component = 2
[../]
[./x_couple]
type = StressDivergenceTensors
use_displaced_mesh = false
variable = wc_x
displacements = 'wc_x wc_y wc_z'
component = 0
base_name = couple
[../]
[./x_moment]
type = MomentBalancing
use_displaced_mesh = false
variable = wc_x
component = 0
[../]
[./gravity]
type = Gravity
use_displaced_mesh = false
variable = disp_z
value = -10E-6
[../]
[]
[AuxVariables]
[./disp_x]
[../]
[./wc_y]
[../]
[./wc_z]
[../]
[./stress_xx]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_yy]
order = CONSTANT
family = MONOMIAL
[../]
[./stress_zz]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./wp_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_shear_f]
order = CONSTANT
family = MONOMIAL
[../]
[./mc_tensile_f]
order = CONSTANT
family = MONOMIAL
[../]
[]
[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
[../]
[./mc_shear]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_internal_parameter
variable = mc_shear
[../]
[./mc_tensile]
type = MaterialStdVectorAux
index = 1
property = mc_plastic_internal_parameter
variable = mc_tensile
[../]
[./wp_shear]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_internal_parameter
variable = wp_shear
[../]
[./wp_tensile]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_internal_parameter
variable = wp_tensile
[../]
[./mc_shear_f]
type = MaterialStdVectorAux
index = 6
property = mc_plastic_yield_function
variable = mc_shear_f
[../]
[./mc_tensile_f]
type = MaterialStdVectorAux
index = 0
property = mc_plastic_yield_function
variable = mc_tensile_f
[../]
[./wp_shear_f]
type = MaterialStdVectorAux
index = 0
property = wp_plastic_yield_function
variable = wp_shear_f
[../]
[./wp_tensile_f]
type = MaterialStdVectorAux
index = 1
property = wp_plastic_yield_function
variable = wp_tensile_f
[../]
[]
[BCs]
[./no_y]
type = DirichletBC
variable = disp_y
boundary = '11 12 16 21' # note addition of 16 and 21
value = 0.0
[../]
[./no_z]
type = DirichletBC
variable = disp_z
boundary = '16'
value = 0.0
[../]
[./no_wc_x]
type = DirichletBC
variable = wc_x
boundary = '11 12'
value = 0.0
[../]
[./roof]
type = FunctionDirichletBC
variable = disp_z
boundary = 21
function = excav_sideways
[../]
[]
[Functions]
[./ini_xx]
type = ParsedFunction
value = '-0.8*2500*10E-6*(400-z)'
[../]
[./ini_zz]
type = ParsedFunction
value = '-2500*10E-6*(400-z)'
[../]
[./excav_sideways]
type = ParsedFunction
vars = 'end_t ymin ymax e_h closure_dist'
vals = '1.0 0 150.0 -3.0 15.0'
value = 'e_h*max(min((t/end_t*(ymax-ymin)+ymin-y)/closure_dist,1),0)'
[../]
[./excav_downwards]
type = ParsedFunction
vars = 'end_t ymin ymax e_h closure_dist'
vals = '1.0 0 150.0 -3.0 15.0'
value = 'e_h*t/end_t*max(min(((ymax-ymin)+ymin-y)/closure_dist,1),0)'
[../]
[]
[UserObjects]
[./mc_coh_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 2.99 # MPa
value_residual = 3.01 # MPa
rate = 1.0
[../]
[./mc_fric]
type = TensorMechanicsHardeningConstant
value = 0.65 # 37deg
[../]
[./mc_dil]
type = TensorMechanicsHardeningConstant
value = 0.15 # 8deg
[../]
[./mc_tensile_str_strong_harden]
type = TensorMechanicsHardeningExponential
value_0 = 1.0 # MPa
value_residual = 1.0 # MPa
rate = 1.0
[../]
[./mc_compressive_str]
type = TensorMechanicsHardeningCubic
value_0 = 100 # Large!
value_residual = 100
internal_limit = 0.1
[../]
[./wp_coh_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_tan_fric]
type = TensorMechanicsHardeningConstant
value = 0.36 # 20deg
[../]
[./wp_tan_dil]
type = TensorMechanicsHardeningConstant
value = 0.18 # 10deg
[../]
[./wp_tensile_str_harden]
type = TensorMechanicsHardeningCubic
value_0 = 0.1
value_residual = 0.1
internal_limit = 10
[../]
[./wp_compressive_str_soften]
type = TensorMechanicsHardeningCubic
value_0 = 100
value_residual = 1.0
internal_limit = 1.0
[../]
[]
[Materials]
[./elasticity_tensor]
type = ComputeLayeredCosseratElasticityTensor
young = 8E3 # MPa
poisson = 0.25
layer_thickness = 1.0
joint_normal_stiffness = 1E9 # huge
joint_shear_stiffness = 1E3
[../]
[./strain]
type = ComputeCosseratIncrementalSmallStrain
eigenstrain_names = ini_stress
[../]
[./ini_stress]
type = ComputeEigenstrainFromInitialStress
initial_stress = 'ini_xx 0 0 0 ini_xx 0 0 0 ini_zz'
eigenstrain_name = ini_stress
[../]
[./stress]
type = ComputeMultipleInelasticCosseratStress
block = 0
inelastic_models = mc
relative_tolerance = 2.0
absolute_tolerance = 1E6
max_iterations = 1
tangent_operator = nonlinear
perform_finite_strain_rotations = false
[../]
[./mc]
type = CappedMohrCoulombCosseratStressUpdate
block = 0
warn_about_precision_loss = false
host_youngs_modulus = 8E3
host_poissons_ratio = 0.25
base_name = mc
tensile_strength = mc_tensile_str_strong_harden
compressive_strength = mc_compressive_str
cohesion = mc_coh_strong_harden
friction_angle = mc_fric
dilation_angle = mc_dil
max_NR_iterations = 100000
smoothing_tol = 0.1 # MPa # Must be linked to cohesion
yield_function_tol = 1E-9 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0
[../]
[./wp]
type = CappedWeakPlaneCosseratStressUpdate
block = 0
warn_about_precision_loss = false
base_name = wp
cohesion = wp_coh_harden
tan_friction_angle = wp_tan_fric
tan_dilation_angle = wp_tan_dil
tensile_strength = wp_tensile_str_harden
compressive_strength = wp_compressive_str_soften
max_NR_iterations = 10000
tip_smoother = 0.1
smoothing_tol = 0.1 # MPa # Note, this must be tied to cohesion, otherwise get no possible return at cone apex
yield_function_tol = 1E-11 # MPa. this is essentially the lowest possible without lots of precision loss
perfect_guess = true
min_step_size = 1.0E-3
[../]
[./density]
type = GenericConstantMaterial
prop_names = density
prop_values = 2500
[../]
[]
[Postprocessors]
[./subsidence]
type = PointValue
point = '0 0 400'
variable = disp_z
use_displaced_mesh = false
[../]
[]
[Preconditioning]
[./SMP]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason'
petsc_options_iname = '-pc_type -pc_asm_overlap -sub_pc_type -ksp_type -ksp_gmres_restart'
petsc_options_value = ' asm 2 lu gmres 200'
line_search = bt
nl_abs_tol = 1e-3
nl_rel_tol = 1e-5
l_max_its = 30
nl_max_its = 1000
start_time = 0.0
dt = 0.2
end_time = 0.2
[]
[Outputs]
file_base = cosserat_mc_only
interval = 1
print_linear_residuals = false
csv = true
exodus = true
[./console]
type = Console
output_linear = false
[../]
[]