- disp_xThe x displacement variable
C++ Type:std::vector<VariableName>
Controllable:No
Description:The x displacement variable
- disp_yThe y displacement variable
C++ Type:std::vector<VariableName>
Controllable:No
Description:The y displacement variable
- friction_lmThe frictional Lagrange's multiplier
C++ Type:std::vector<VariableName>
Controllable:No
Description:The frictional Lagrange's multiplier
- muThe friction coefficient for the Coulomb friction law
C++ Type:double
Controllable:No
Description:The friction coefficient for the Coulomb friction law
- primary_boundaryThe name of the primary boundary sideset.
C++ Type:BoundaryName
Controllable:No
Description:The name of the primary boundary sideset.
- primary_subdomainThe name of the primary subdomain.
C++ Type:SubdomainName
Controllable:No
Description:The name of the primary subdomain.
- secondary_boundaryThe name of the secondary boundary sideset.
C++ Type:BoundaryName
Controllable:No
Description:The name of the secondary boundary sideset.
- secondary_subdomainThe name of the secondary subdomain.
C++ Type:SubdomainName
Controllable:No
Description:The name of the secondary subdomain.
ComputeFrictionalForceLMMechanicalContact
Computes the tangential frictional forces
This class represents a preliminary implementation of frictional mortar contact constraints intended to be used with Lagrange's multiplier interpolation with dual bases. The nonlinear complementarity constraints employed here are based on a primal-dual active set strategy (PDASS), see (Gitterle et al., 2010). These constraints capture nodes in sticking and slipping states on different solution branches, and can be written as:
is a Lagrange's multiplier that refers to the tangential contact pressure at node , is the weighted tangential velocity integrated forward in time, is the weighted normal gap, is a numerical parameter ( in ComputeWeightedGapLMMechanicalContact) and is a numerical parameter that can determine convergence properties but has no effect on the results.
The nodal, weighted tangential velocity is computed as
where denotes the secondary contact interface, is the j'th lagrange multiplier test function, and is the discretized version of the tangential velocity function.
This object automatically enforces normal contact constraints by making calls to its parent class ComputeWeightedGapLMMechanicalContact, see ComputeWeightedGapLMMechanicalContact for input parameters and details.
The preliminary recommendation is to select c to be on the order of the moduli of elasticity of the bodies into contact, and c_t to be a few orders of magnitude less than c. This selection of these purely numerical parameters can represent an initial difficulty when running new models, but they can be held constant once good convergence behavior has been attained.
Input Parameters
- c1e+06Parameter for balancing the size of the gap and contact pressure
Default:1e+06
C++ Type:double
Controllable:No
Description:Parameter for balancing the size of the gap and contact pressure
- c_t1Numerical parameter for tangential constraints
Default:1
C++ Type:double
Controllable:No
Description:Numerical parameter for tangential constraints
- compute_lm_residualsTrueWhether to compute Lagrange Multiplier residuals
Default:True
C++ Type:bool
Controllable:No
Description:Whether to compute Lagrange Multiplier residuals
- compute_primal_residualsTrueWhether to compute residuals for the primal variable.
Default:True
C++ Type:bool
Controllable:No
Description:Whether to compute residuals for the primal variable.
- correct_edge_droppingFalseWhether to enable correct edge dropping treatment for mortar constraints. When disabled any Lagrange Multiplier degree of freedom on a secondary element without full primary contributions will be set (strongly) to 0.
Default:False
C++ Type:bool
Controllable:No
Description:Whether to enable correct edge dropping treatment for mortar constraints. When disabled any Lagrange Multiplier degree of freedom on a secondary element without full primary contributions will be set (strongly) to 0.
- debug_meshFalseWhether this constraint is going to enable mortar segment mesh debug information. An exodusfile will be generated if the user sets this flag to true
Default:False
C++ Type:bool
Controllable:No
Description:Whether this constraint is going to enable mortar segment mesh debug information. An exodusfile will be generated if the user sets this flag to true
- disp_zThe z displacement variable
C++ Type:std::vector<VariableName>
Controllable:No
Description:The z displacement variable
- epsilon1e-07Minimum value of contact pressure that will trigger frictional enforcement
Default:1e-07
C++ Type:double
Controllable:No
Description:Minimum value of contact pressure that will trigger frictional enforcement
- friction_lm_dirThe frictional Lagrange's multiplier for an addtional direction.
C++ Type:std::vector<VariableName>
Controllable:No
Description:The frictional Lagrange's multiplier for an addtional direction.
- ghost_point_neighborsFalseWhether we should ghost point neighbors of secondary face elements, and consequently also their mortar interface couples.
Default:False
C++ Type:bool
Controllable:No
Description:Whether we should ghost point neighbors of secondary face elements, and consequently also their mortar interface couples.
- interpolate_normalsTrueWhether to interpolate the nodal normals (e.g. classic idea of evaluating field at quadrature points). If this is set to false, then non-interpolated nodal normals will be used, and then the _normals member should be indexed with _i instead of _qp
Default:True
C++ Type:bool
Controllable:No
Description:Whether to interpolate the nodal normals (e.g. classic idea of evaluating field at quadrature points). If this is set to false, then non-interpolated nodal normals will be used, and then the _normals member should be indexed with _i instead of _qp
- normalize_cFalseWhether to normalize c by weighting function norm. When unnormalized the value of c effectively depends on element size since in the constraint we compare nodal Lagrange Multiplier values to integrated gap values (LM nodal value is independent of element size, where integrated values are dependent on element size).
Default:False
C++ Type:bool
Controllable:No
Description:Whether to normalize c by weighting function norm. When unnormalized the value of c effectively depends on element size since in the constraint we compare nodal Lagrange Multiplier values to integrated gap values (LM nodal value is independent of element size, where integrated values are dependent on element size).
- periodicFalseWhether this constraint is going to be used to enforce a periodic condition. This has the effect of changing the normals vector for projection from outward to inward facing
Default:False
C++ Type:bool
Controllable:No
Description:Whether this constraint is going to be used to enforce a periodic condition. This has the effect of changing the normals vector for projection from outward to inward facing
- prop_getter_suffixAn optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Controllable:No
Description:An optional suffix parameter that can be appended to any attempt to retrieve/get material properties. The suffix will be prepended with a '_' character.
- quadratureDEFAULTQuadrature rule to use on mortar segments. For 2D mortar DEFAULT is recommended. For 3D mortar, QUAD meshes are integrated using triangle mortar segments. While DEFAULT quadrature order is typically sufficiently accurate, exact integration of QUAD mortar faces requires SECOND order quadrature for FIRST variables and FOURTH order quadrature for SECOND order variables.
Default:DEFAULT
C++ Type:MooseEnum
Options:DEFAULT, FIRST, SECOND, THIRD, FOURTH
Controllable:No
Description:Quadrature rule to use on mortar segments. For 2D mortar DEFAULT is recommended. For 3D mortar, QUAD meshes are integrated using triangle mortar segments. While DEFAULT quadrature order is typically sufficiently accurate, exact integration of QUAD mortar faces requires SECOND order quadrature for FIRST variables and FOURTH order quadrature for SECOND order variables.
- variableThe name of the lagrange multiplier variable that this constraint is applied to. This parameter may not be supplied in the case of using penalty methods for example
C++ Type:NonlinearVariableName
Controllable:No
Description:The name of the lagrange multiplier variable that this constraint is applied to. This parameter may not be supplied in the case of using penalty methods for example
Optional Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:Yes
Description:Set the enabled status of the MooseObject.
- implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Controllable:No
Description:The seed for the master random number generator
- use_displaced_meshTrueWhether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Default:True
C++ Type:bool
Controllable:No
Description:Whether or not this object should use the displaced mesh for computation. Note that in the case this is true but no displacements are provided in the Mesh block the undisplaced mesh will still be used.
Advanced Parameters
- extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the matrices this Kernel should fill
- extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the vectors this Kernel should fill
- matrix_tagssystemThe tag for the matrices this Kernel should fill
Default:system
C++ Type:MultiMooseEnum
Options:nontime, system
Controllable:No
Description:The tag for the matrices this Kernel should fill
- vector_tagsnontimeThe tag for the vectors this Kernel should fill
Default:nontime
C++ Type:MultiMooseEnum
Options:nontime, time
Controllable:No
Description:The tag for the vectors this Kernel should fill
Tagging Parameters
Input Files
- (modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d.i)
- (modules/contact/test/tests/bouncing-block-contact/frictional-nodal-min-normal-lm-mortar-pdass-tangential-lm-mortar-disp.i)
- (modules/contact/test/tests/pdass_problems/cylinder_friction.i)
- (modules/contact/test/tests/pdass_problems/ironing.i)
- (modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d.i)
- (modules/contact/test/tests/bouncing-block-contact/variational-frictional.i)
- (modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d-interp-geometry.i)
- (modules/contact/test/tests/pdass_problems/frictional_bouncing_block.i)
- (modules/contact/test/tests/mortar_aux_kernels/frictional-mortar-3d-status.i)
References
- Markus Gitterle, Alexander Popp, Michael W Gee, and Wolfgang A Wall.
Finite deformation frictional mortar contact using a semi-smooth newton method with consistent linearization.
International Journal for Numerical Methods in Engineering, 84(5):543–571, 2010.[BibTeX]
@article{gitterle2010finite, author = "Gitterle, Markus and Popp, Alexander and Gee, Michael W and Wall, Wolfgang A", title = "Finite deformation frictional mortar contact using a semi-smooth Newton method with consistent linearization", journal = "International Journal for Numerical Methods in Engineering", volume = "84", number = "5", pages = "543--571", year = "2010", publisher = "Wiley Online Library" }
(modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d.i)
starting_point = 0.25
offset = 0.00
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[AuxVariables]
[mortar_tangent_x]
family = LAGRANGE
order = FIRST
[]
[mortar_tangent_y]
family = LAGRANGE
order = FIRST
[]
[mortar_tangent_z]
family = LAGRANGE
order = FIRST
[]
[]
[AuxKernels]
[friction_x_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_x
component = 0
boundary = 'top_bottom'
[]
[friction_y_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_y
component = 1
boundary = 'top_bottom'
[]
[friction_z_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_z
component = 2
boundary = 'top_bottom'
[]
[]
[Mesh]
[top_block]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = -0.25
xmax = 0.25
ymin = -0.25
ymax = 0.25
zmin = -0.25
zmax = 0.25
elem_type = HEX8
[]
[rotate_top_block]
type = TransformGenerator
input = top_block
transform = ROTATE
vector_value = '0 0 0'
[]
[top_block_sidesets]
type = RenameBoundaryGenerator
input = rotate_top_block
old_boundary = '0 1 2 3 4 5'
new_boundary = 'top_bottom top_back top_right top_front top_left top_top'
[]
[top_block_id]
type = SubdomainIDGenerator
input = top_block_sidesets
subdomain_id = 1
[]
[bottom_block]
type = GeneratedMeshGenerator
dim = 3
nx = 10
ny = 10
nz = 2
xmin = -.5
xmax = .5
ymin = -.5
ymax = .5
zmin = -.3
zmax = -.25
elem_type = HEX8
[]
[bottom_block_id]
type = SubdomainIDGenerator
input = bottom_block
subdomain_id = 2
[]
[bottom_block_change_boundary_id]
type = RenameBoundaryGenerator
input = bottom_block_id
old_boundary = '0 1 2 3 4 5'
new_boundary = '100 101 102 103 104 105'
[]
[combined]
type = MeshCollectionGenerator
inputs = 'top_block_id bottom_block_change_boundary_id'
[]
[block_rename]
type = RenameBlockGenerator
input = combined
old_block = '1 2'
new_block = 'top_block bottom_block'
[]
[bottom_right_sideset]
type = SideSetsAroundSubdomainGenerator
input = block_rename
new_boundary = bottom_right
block = bottom_block
normal = '1 0 0'
[]
[bottom_left_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_right_sideset
new_boundary = bottom_left
block = bottom_block
normal = '-1 0 0'
[]
[bottom_top_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_left_sideset
new_boundary = bottom_top
block = bottom_block
normal = '0 0 1'
[]
[bottom_bottom_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_top_sideset
new_boundary = bottom_bottom
block = bottom_block
normal = '0 0 -1'
[]
[bottom_front_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_bottom_sideset
new_boundary = bottom_front
block = bottom_block
normal = '0 1 0'
[]
[bottom_back_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_front_sideset
new_boundary = bottom_back
block = bottom_block
normal = '0 -1 0'
[]
[secondary]
input = bottom_back_sideset
type = LowerDBlockFromSidesetGenerator
sidesets = 'top_bottom' # top_back top_left'
new_block_id = '10001'
new_block_name = 'secondary_lower'
[]
[primary]
input = secondary
type = LowerDBlockFromSidesetGenerator
sidesets = 'bottom_top'
new_block_id = '10000'
new_block_name = 'primary_lower'
[]
uniform_refine = 0
allow_renumbering = false
[]
[Variables]
[mortar_normal_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_3d_lm]
block = 'secondary_lower'
use_dual = true
[]
[]
[Modules/TensorMechanics/Master]
[all]
add_variables = true
strain = FINITE
block = '1 2'
use_automatic_differentiation = false
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
[]
[]
[Materials]
[tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1.0e4
poissons_ratio = 0.0
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[tensor_1000]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e5
poissons_ratio = 0.0
[]
[stress_1000]
type = ComputeFiniteStrainElasticStress
block = '2'
[]
[]
[Constraints]
[friction]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
use_displaced_mesh = true
mu = 0.4
c = 1e4
c_t = 1.0e4
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
interpolate_normals = false
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[normal_z]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_x
component = x
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_y
component = y
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_z
component = z
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[botz]
type = DirichletBC
variable = disp_z
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[topx]
type = DirichletBC
variable = disp_x
boundary = 'top_top'
value = 0.0
[]
[topy]
type = DirichletBC
variable = disp_y
boundary = 'top_top'
value = 0.0
[]
[topz]
type = FunctionDirichletBC
variable = disp_z
boundary = 'top_top'
function = '-${starting_point} * sin(2 * pi / 40 * t) + ${offset}'
[]
[]
[Executioner]
type = Transient
end_time = .025
dt = .025
dtmin = .001
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu NONZERO 1e-14 1e-5'
l_max_its = 15
nl_max_its = 30
nl_rel_tol = 1e-11
nl_abs_tol = 1e-12
line_search = 'basic'
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
csv = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[contact]
type = ContactDOFSetSize
variable = mortar_normal_lm
subdomain = 'secondary_lower'
execute_on = 'nonlinear timestep_end'
[]
[]
[VectorPostprocessors]
[contact-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_normal_lm
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[frictional-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_lm
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[frictional-pressure-3d]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_3d_lm
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[tangent_x]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_x
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[tangent_y]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_y
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[]
(modules/contact/test/tests/bouncing-block-contact/frictional-nodal-min-normal-lm-mortar-pdass-tangential-lm-mortar-disp.i)
starting_point = 2e-1
# We offset slightly so we avoid the case where the bottom of the secondary block and the top of the
# primary block are perfectly vertically aligned which can cause the backtracking line search some
# issues for a coarse mesh (basic line search handles that fine)
offset = 1e-2
[GlobalParams]
displacements = 'disp_x disp_y'
diffusivity = 1e0
scaling = 1e0
[]
[Mesh]
[file_mesh]
type = FileMeshGenerator
file = long-bottom-block-1elem-blocks-coarse.e
[]
[]
[Variables]
[disp_x]
block = '1 2'
# order = SECOND
[]
[disp_y]
block = '1 2'
# order = SECOND
[]
[frictional_normal_lm]
block = 3
use_dual = true
[]
[frictional_tangential_lm]
block = 3
use_dual = true
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Kernels]
[disp_x]
type = MatDiffusion
variable = disp_x
[]
[disp_y]
type = MatDiffusion
variable = disp_y
[]
[]
[Constraints]
[frictional_normal_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_normal_lm
friction_lm = frictional_tangential_lm
disp_x = disp_x
disp_y = disp_y
mu = 0.1
c = 1.0e-2
c_t = 1.0e-1
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 40
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 40
value = 0.0
[]
[topy]
type = FunctionDirichletBC
variable = disp_y
boundary = 30
function = '${starting_point} * cos(2 * pi / 40 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 50
function = '1e-2 * t'
[]
[]
[Executioner]
type = Transient
end_time = 200
dt = 5
dtmin = .1
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -pc_svd_monitor '
'-snes_linesearch_monitor -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu NONZERO 1e-15 1e-5'
l_max_its = 30
nl_max_its = 20
line_search = 'none'
snesmf_reuse_base = false
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
[]
(modules/contact/test/tests/pdass_problems/cylinder_friction.i)
[GlobalParams]
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]
[input_file]
type = FileMeshGenerator
file = hertz_cyl_coarser.e
[]
[secondary]
type = LowerDBlockFromSidesetGenerator
new_block_id = 10001
new_block_name = 'secondary_lower'
sidesets = '3'
input = input_file
[]
[primary]
type = LowerDBlockFromSidesetGenerator
new_block_id = 10000
sidesets = '2'
new_block_name = 'primary_lower'
input = secondary
[]
[]
[Problem]
type = ReferenceResidualProblem
extra_tag_vectors = 'ref'
reference_vector = 'ref'
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[frictionless_normal_lm]
order = FIRST
family = LAGRANGE
block = 'secondary_lower'
use_dual = true
[]
[tangential_lm]
block = 'secondary_lower'
use_dual = true
[]
[]
[AuxVariables]
[stress_xx]
order = CONSTANT
family = MONOMIAL
[]
[stress_yy]
order = CONSTANT
family = MONOMIAL
[]
[stress_xy]
order = CONSTANT
family = MONOMIAL
[]
[saved_x]
[]
[saved_y]
[]
[diag_saved_x]
[]
[diag_saved_y]
[]
[]
[Functions]
[disp_ramp_vert]
type = PiecewiseLinear
x = '0. 1. 3.5'
y = '0. -0.020 -0.020'
[]
[disp_ramp_horz]
type = PiecewiseLinear
x = '0. 1. 3.5'
y = '0. 0.0 0.015'
[]
[]
[Kernels]
[TensorMechanics]
use_displaced_mesh = true
save_in = 'saved_x saved_y'
extra_vector_tags = 'ref'
block = '1 2 3 4 5 6 7'
[]
[]
[AuxKernels]
[stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
execute_on = timestep_end
block = '1 2 3 4 5 6 7'
[]
[stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
block = '1 2 3 4 5 6 7'
[]
[stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
execute_on = timestep_end
block = '1 2 3 4 5 6 7'
[]
[]
[Postprocessors]
[bot_react_x]
type = NodalSum
variable = saved_x
boundary = 1
[]
[bot_react_y]
type = NodalSum
variable = saved_y
boundary = 1
[]
[top_react_x]
type = NodalSum
variable = saved_x
boundary = 4
[]
[top_react_y]
type = NodalSum
variable = saved_y
boundary = 4
[]
[_dt]
type = TimestepSize
[]
[num_lin_it]
type = NumLinearIterations
[]
[num_nonlin_it]
type = NumNonlinearIterations
[]
[]
[BCs]
[side_x]
type = DirichletBC
variable = disp_y
boundary = '1 2'
value = 0.0
[]
[bot_y]
type = DirichletBC
variable = disp_x
boundary = '1 2'
value = 0.0
[]
[top_y_disp]
type = FunctionDirichletBC
variable = disp_y
boundary = 4
function = disp_ramp_vert
[]
[top_x_disp]
type = FunctionDirichletBC
variable = disp_x
boundary = 4
function = disp_ramp_horz
[]
[]
[Materials]
[stuff1_elas_tens]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e10
poissons_ratio = 0.0
[]
[stuff1_strain]
type = ComputeFiniteStrain
block = '1'
[]
[stuff1_stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[stuff2_elas_tens]
type = ComputeIsotropicElasticityTensor
block = '2 3 4 5 6 7'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[stuff2_strain]
type = ComputeFiniteStrain
block = '2 3 4 5 6 7'
[]
[stuff2_stress]
type = ComputeFiniteStrainElasticStress
block = '2 3 4 5 6 7'
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu superlu_dist NONZERO 1e-15 1e-5'
line_search = 'none'
nl_abs_tol = 1e-7
start_time = 0.0
end_time = 0.3 # 3.5
l_tol = 1e-4
dt = 0.1
dtmin = 0.001
[]
[Preconditioning]
[SMP]
type = SMP
full = true
[]
[]
[VectorPostprocessors]
[x_disp]
type = NodalValueSampler
variable = disp_x
boundary = '3 4'
sort_by = id
[]
[y_disp]
type = NodalValueSampler
variable = disp_y
boundary = '3 4'
sort_by = id
[]
[cont_press]
type = NodalValueSampler
variable = frictionless_normal_lm
boundary = '3'
sort_by = id
[]
[friction]
type = NodalValueSampler
variable = frictionless_normal_lm
boundary = '3'
sort_by = id
[]
[]
[Outputs]
print_linear_residuals = true
perf_graph = true
exodus = false
csv = false
[console]
type = Console
max_rows = 5
[]
[chkfile]
type = CSV
show = 'x_disp y_disp cont_press friction'
file_base = cylinder_friction_check
create_final_symlink = true
execute_on = 'FINAL'
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 2
secondary_boundary = 3
primary_subdomain = 10000
secondary_subdomain = 10001
variable = frictionless_normal_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
friction_lm = tangential_lm
mu = 0.4
c_t = 1.0e5
c = 1.0e6
[]
[x]
type = NormalMortarMechanicalContact
primary_boundary = '2'
secondary_boundary = '3'
primary_subdomain = '10000'
secondary_subdomain = '10001'
variable = frictionless_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[y]
type = NormalMortarMechanicalContact
primary_boundary = '2'
secondary_boundary = '3'
primary_subdomain = '10000'
secondary_subdomain = '10001'
variable = frictionless_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 2
secondary_boundary = 3
primary_subdomain = 10000
secondary_subdomain = 10001
variable = tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 2
secondary_boundary = 3
primary_subdomain = 10000
secondary_subdomain = 10001
variable = tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[]
(modules/contact/test/tests/pdass_problems/ironing.i)
[GlobalParams]
volumetric_locking_correction = true
displacements = 'disp_x disp_y'
[]
[Mesh]
[input_file]
type = FileMeshGenerator
file = iron.e
[]
[secondary]
type = LowerDBlockFromSidesetGenerator
new_block_id = 10001
new_block_name = 'secondary_lower'
sidesets = '10'
input = input_file
[]
[primary]
type = LowerDBlockFromSidesetGenerator
new_block_id = 10000
sidesets = '20'
new_block_name = 'primary_lower'
input = secondary
[]
patch_update_strategy = auto
patch_size = 20
[]
[Variables]
[disp_x]
[]
[disp_y]
[]
[frictionless_normal_lm]
order = FIRST
family = LAGRANGE
block = 'secondary_lower'
use_dual = true
[]
[tangential_lm]
order = FIRST
family = LAGRANGE
block = 'secondary_lower'
use_dual = true
[]
[]
[AuxVariables]
[stress_xx]
order = CONSTANT
family = MONOMIAL
[]
[stress_yy]
order = CONSTANT
family = MONOMIAL
[]
[stress_xy]
order = CONSTANT
family = MONOMIAL
[]
[saved_x]
[]
[saved_y]
[]
[diag_saved_x]
[]
[diag_saved_y]
[]
[von_mises]
order = CONSTANT
family = MONOMIAL
[]
[]
[Functions]
[disp_ramp_vert]
type = PiecewiseLinear
x = '0. 2. 8.'
y = '0. -1.0 -1.0'
[]
[disp_ramp_horz]
type = PiecewiseLinear
x = '0. 8.' # x = '0. 2. 8.'
y = '0. 8.' # y = '0. 0. 8'
[]
[]
[Kernels]
[TensorMechanics]
use_displaced_mesh = true
save_in = 'saved_x saved_y'
block = '1 2'
strain = FINITE
[]
[]
[AuxKernels]
[stress_xx]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xx
index_i = 0
index_j = 0
execute_on = timestep_end
block = '1 2'
[]
[stress_yy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_yy
index_i = 1
index_j = 1
execute_on = timestep_end
block = '1 2'
[]
[stress_xy]
type = RankTwoAux
rank_two_tensor = stress
variable = stress_xy
index_i = 0
index_j = 1
execute_on = timestep_end
block = '1 2'
[]
[von_mises_kernel]
#Calculates the von mises stress and assigns it to von_mises
type = RankTwoScalarAux
variable = von_mises
rank_two_tensor = stress
execute_on = timestep_end
scalar_type = VonMisesStress
block = '1 2'
[]
[]
[Postprocessors]
[bot_react_x]
type = NodalSum
variable = saved_x
boundary = 20
[]
[bot_react_y]
type = NodalSum
variable = saved_y
boundary = 20
[]
[top_react_x]
type = NodalSum
variable = saved_x
boundary = 10
[]
[top_react_y]
type = NodalSum
variable = saved_y
boundary = 10
[]
[_dt]
type = TimestepSize
[]
[contact_pressure]
type = NodalVariableValue
variable = frictionless_normal_lm
nodeid = 805
[]
[]
[BCs]
[bot_x_disp]
type = DirichletBC
variable = disp_x
boundary = '40'
value = 0.0
preset = false
[]
[bot_y_disp]
type = DirichletBC
variable = disp_y
boundary = '40'
value = 0.0
preset = false
[]
[top_y_disp]
type = FunctionDirichletBC
variable = disp_y
boundary = '30'
function = disp_ramp_vert
preset = false
[]
[top_x_disp]
type = FunctionDirichletBC
variable = disp_x
boundary = '30'
function = disp_ramp_horz
preset = false
[]
[]
[Materials]
[stuff1_elas_tens]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 6896
poissons_ratio = 0.32
[]
[stuff1_strain]
type = ComputeFiniteStrain
block = '2'
[]
[stuff1_stress]
type = ComputeFiniteStrainElasticStress
block = '2'
[]
[stuff2_elas_tens]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 689.6
poissons_ratio = 0.32
[]
[stuff2_strain]
type = ComputeFiniteStrain
block = '1'
[]
[stuff2_stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options = '-snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type'
petsc_options_value = 'lu superlu_dist'
line_search = 'none'
nl_abs_tol = 1e-7
nl_rel_tol = 1e-7
l_tol = 1e-6
l_max_its = 50
nl_max_its = 30
start_time = 0.0
end_time = 0.1 # 6.5
dt = 0.0125
dtmin = 1e-5
[]
[Preconditioning]
[SMP]
type = SMP
full = true
[]
[]
[VectorPostprocessors]
[cont_press]
type = NodalValueSampler
variable = frictionless_normal_lm
boundary = '10'
sort_by = id
execute_on = FINAL
[]
[friction]
type = NodalValueSampler
variable = tangential_lm
boundary = '10'
sort_by = id
execute_on = FINAL
[]
[]
[Outputs]
print_linear_residuals = true
perf_graph = true
exodus = false
csv = true
[chkfile]
type = CSV
show = 'cont_press friction'
start_time = 0.0
execute_vector_postprocessors_on = FINAL
[]
[console]
type = Console
max_rows = 5
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Constraints]
# All constraints below for mechanical contact (Mortar)
[weighted_gap_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 10000
secondary_subdomain = 10001
variable = frictionless_normal_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
friction_lm = tangential_lm
mu = 0.5
c_t = 1.0e1
c = 1.0e3
[]
[x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = '10000'
secondary_subdomain = '10001'
variable = frictionless_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = '10000'
secondary_subdomain = '10001'
variable = frictionless_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = '10000'
secondary_subdomain = '10001'
variable = tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = '10000'
secondary_subdomain = '10001'
variable = tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[]
(modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d.i)
starting_point = 0.25
offset = 0.00
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[AuxVariables]
[mortar_tangent_x]
family = LAGRANGE
order = FIRST
[]
[mortar_tangent_y]
family = LAGRANGE
order = FIRST
[]
[mortar_tangent_z]
family = LAGRANGE
order = FIRST
[]
[]
[AuxKernels]
[friction_x_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_x
component = 0
boundary = 'top_bottom'
[]
[friction_y_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_y
component = 1
boundary = 'top_bottom'
[]
[friction_z_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_z
component = 2
boundary = 'top_bottom'
[]
[]
[Mesh]
[top_block]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = -0.25
xmax = 0.25
ymin = -0.25
ymax = 0.25
zmin = -0.25
zmax = 0.25
elem_type = HEX8
[]
[rotate_top_block]
type = TransformGenerator
input = top_block
transform = ROTATE
vector_value = '0 0 0'
[]
[top_block_sidesets]
type = RenameBoundaryGenerator
input = rotate_top_block
old_boundary = '0 1 2 3 4 5'
new_boundary = 'top_bottom top_back top_right top_front top_left top_top'
[]
[top_block_id]
type = SubdomainIDGenerator
input = top_block_sidesets
subdomain_id = 1
[]
[bottom_block]
type = GeneratedMeshGenerator
dim = 3
nx = 10
ny = 10
nz = 2
xmin = -.5
xmax = .5
ymin = -.5
ymax = .5
zmin = -.3
zmax = -.25
elem_type = HEX8
[]
[bottom_block_id]
type = SubdomainIDGenerator
input = bottom_block
subdomain_id = 2
[]
[bottom_block_change_boundary_id]
type = RenameBoundaryGenerator
input = bottom_block_id
old_boundary = '0 1 2 3 4 5'
new_boundary = '100 101 102 103 104 105'
[]
[combined]
type = MeshCollectionGenerator
inputs = 'top_block_id bottom_block_change_boundary_id'
[]
[block_rename]
type = RenameBlockGenerator
input = combined
old_block = '1 2'
new_block = 'top_block bottom_block'
[]
[bottom_right_sideset]
type = SideSetsAroundSubdomainGenerator
input = block_rename
new_boundary = bottom_right
block = bottom_block
normal = '1 0 0'
[]
[bottom_left_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_right_sideset
new_boundary = bottom_left
block = bottom_block
normal = '-1 0 0'
[]
[bottom_top_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_left_sideset
new_boundary = bottom_top
block = bottom_block
normal = '0 0 1'
[]
[bottom_bottom_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_top_sideset
new_boundary = bottom_bottom
block = bottom_block
normal = '0 0 -1'
[]
[bottom_front_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_bottom_sideset
new_boundary = bottom_front
block = bottom_block
normal = '0 1 0'
[]
[bottom_back_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_front_sideset
new_boundary = bottom_back
block = bottom_block
normal = '0 -1 0'
[]
[secondary]
input = bottom_back_sideset
type = LowerDBlockFromSidesetGenerator
sidesets = 'top_bottom' # top_back top_left'
new_block_id = '10001'
new_block_name = 'secondary_lower'
[]
[primary]
input = secondary
type = LowerDBlockFromSidesetGenerator
sidesets = 'bottom_top'
new_block_id = '10000'
new_block_name = 'primary_lower'
[]
uniform_refine = 0
allow_renumbering = false
[]
[Variables]
[mortar_normal_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_3d_lm]
block = 'secondary_lower'
use_dual = true
[]
[]
[Modules/TensorMechanics/Master]
[all]
add_variables = true
strain = FINITE
block = '1 2'
use_automatic_differentiation = false
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
[]
[]
[Materials]
[tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1.0e4
poissons_ratio = 0.0
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[tensor_1000]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e5
poissons_ratio = 0.0
[]
[stress_1000]
type = ComputeFiniteStrainElasticStress
block = '2'
[]
[]
[Constraints]
[friction]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
use_displaced_mesh = true
mu = 0.4
c = 1e4
c_t = 1.0e4
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
interpolate_normals = false
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[normal_z]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_x
component = x
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_y
component = y
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_z
component = z
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[botz]
type = DirichletBC
variable = disp_z
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[topx]
type = DirichletBC
variable = disp_x
boundary = 'top_top'
value = 0.0
[]
[topy]
type = DirichletBC
variable = disp_y
boundary = 'top_top'
value = 0.0
[]
[topz]
type = FunctionDirichletBC
variable = disp_z
boundary = 'top_top'
function = '-${starting_point} * sin(2 * pi / 40 * t) + ${offset}'
[]
[]
[Executioner]
type = Transient
end_time = .025
dt = .025
dtmin = .001
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu superlu_dist NONZERO 1e-14 1e-5'
l_max_its = 15
nl_max_its = 30
nl_rel_tol = 1e-11
nl_abs_tol = 1e-12
line_search = 'basic'
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
csv = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[contact]
type = ContactDOFSetSize
variable = mortar_normal_lm
subdomain = 'secondary_lower'
execute_on = 'nonlinear timestep_end'
[]
[]
[VectorPostprocessors]
[contact-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_normal_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[frictional-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[frictional-pressure-3d]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_3d_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[tangent_x]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_x
sort_by = 'id'
execute_on = NONLINEAR
[]
[tangent_y]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_y
sort_by = 'id'
execute_on = NONLINEAR
[]
[]
(modules/contact/test/tests/bouncing-block-contact/variational-frictional.i)
starting_point = 2e-1
# We offset slightly so we avoid the case where the bottom of the secondary block and the top of the
# primary block are perfectly vertically aligned which can cause the backtracking line search some
# issues for a coarse mesh (basic line search handles that fine)
offset = 1e-2
[GlobalParams]
displacements = 'disp_x disp_y'
diffusivity = 1e0
correct_edge_dropping = true
[]
[Mesh]
[file_mesh]
type = FileMeshGenerator
file = long-bottom-block-1elem-blocks-coarse.e
[]
[]
[Variables]
[disp_x]
block = '1 2'
scaling = 1e1
[]
[disp_y]
block = '1 2'
scaling = 1e1
[]
[frictional_normal_lm]
block = 4
scaling = 1e3
[]
[frictional_tangential_lm]
block = 4
scaling = 1e2
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Kernels]
[disp_x]
type = MatDiffusion
variable = disp_x
[]
[disp_y]
type = MatDiffusion
variable = disp_y
[]
[]
[AuxVariables]
[procid]
family = MONOMIAL
order = CONSTANT
[]
[]
[AuxKernels]
[procid]
type = ProcessorIDAux
variable = procid
[]
[]
[Constraints]
[frictional_normal_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = frictional_normal_lm
friction_lm = frictional_tangential_lm
disp_x = disp_x
disp_y = disp_y
mu = 0.1
normalize_c = true
c = 1.0e-2
c_t = 1.0e-1
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = frictional_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = frictional_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = frictional_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = frictional_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 40
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 40
value = 0.0
[]
[topy]
type = FunctionDirichletBC
variable = disp_y
boundary = 30
function = '${starting_point} * cos(2 * pi / 40 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 50
function = '1e-2 * t'
[]
[]
[Executioner]
type = Transient
end_time = 200
dt = 5
dtmin = .1
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason'
petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_shift_amount'
petsc_options_value = 'lu NONZERO 1e-15'
l_max_its = 30
nl_max_its = 25
line_search = 'none'
nl_rel_tol = 1e-12
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
(modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d-interp-geometry.i)
starting_point = 0.25
offset = 0.00
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[Mesh]
[top_block]
type = GeneratedMeshGenerator
dim = 3
nx = 3
ny = 3
nz = 3
xmin = -0.25
xmax = 0.25
ymin = -0.25
ymax = 0.25
zmin = -0.25
zmax = 0.25
elem_type = HEX8
[]
[rotate_top_block]
type = TransformGenerator
input = top_block
transform = ROTATE
vector_value = '0 0 0'
[]
[top_block_sidesets]
type = RenameBoundaryGenerator
input = rotate_top_block
old_boundary = '0 1 2 3 4 5'
new_boundary = 'top_bottom top_back top_right top_front top_left top_top'
[]
[top_block_id]
type = SubdomainIDGenerator
input = top_block_sidesets
subdomain_id = 1
[]
[bottom_block]
type = GeneratedMeshGenerator
dim = 3
nx = 10
ny = 10
nz = 2
xmin = -.5
xmax = .5
ymin = -.5
ymax = .5
zmin = -.3
zmax = -.25
elem_type = HEX8
[]
[bottom_block_id]
type = SubdomainIDGenerator
input = bottom_block
subdomain_id = 2
[]
[bottom_block_change_boundary_id]
type = RenameBoundaryGenerator
input = bottom_block_id
old_boundary = '0 1 2 3 4 5'
new_boundary = '100 101 102 103 104 105'
[]
[combined]
type = MeshCollectionGenerator
inputs = 'top_block_id bottom_block_change_boundary_id'
[]
[block_rename]
type = RenameBlockGenerator
input = combined
old_block = '1 2'
new_block = 'top_block bottom_block'
[]
[bottom_right_sideset]
type = SideSetsAroundSubdomainGenerator
input = block_rename
new_boundary = bottom_right
block = bottom_block
normal = '1 0 0'
[]
[bottom_left_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_right_sideset
new_boundary = bottom_left
block = bottom_block
normal = '-1 0 0'
[]
[bottom_top_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_left_sideset
new_boundary = bottom_top
block = bottom_block
normal = '0 0 1'
[]
[bottom_bottom_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_top_sideset
new_boundary = bottom_bottom
block = bottom_block
normal = '0 0 -1'
[]
[bottom_front_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_bottom_sideset
new_boundary = bottom_front
block = bottom_block
normal = '0 1 0'
[]
[bottom_back_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_front_sideset
new_boundary = bottom_back
block = bottom_block
normal = '0 -1 0'
[]
[secondary]
input = bottom_back_sideset
type = LowerDBlockFromSidesetGenerator
sidesets = 'top_bottom' # top_back top_left'
new_block_id = '10001'
new_block_name = 'secondary_lower'
[]
[primary]
input = secondary
type = LowerDBlockFromSidesetGenerator
sidesets = 'bottom_top'
new_block_id = '10000'
new_block_name = 'primary_lower'
[]
uniform_refine = 0
[]
[Variables]
[mortar_normal_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_x_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_y_lm]
block = 'secondary_lower'
use_dual = true
[]
[]
[Modules/TensorMechanics/Master]
[all]
add_variables = true
strain = FINITE
block = '1 2'
use_automatic_differentiation = false
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
[]
[]
[Materials]
[tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1.0e4
poissons_ratio = 0.0
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[tensor_1000]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e5
poissons_ratio = 0.0
[]
[stress_1000]
type = ComputeFiniteStrainElasticStress
block = '2'
[]
[]
[Constraints]
[friction]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
use_displaced_mesh = true
mu = 0.4
c = 1e4
c_t = 1.0e4
friction_lm = mortar_tangential_x_lm
friction_lm_dir = mortar_tangential_y_lm
interpolate_normals = true
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[normal_z]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_x_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_x_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[tangential_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_x_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[tangential_dir_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_y_lm
secondary_variable = disp_x
component = x
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[tangential_dir_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_y_lm
secondary_variable = disp_y
component = y
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_y_lm
secondary_variable = disp_z
component = z
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = true
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[botz]
type = DirichletBC
variable = disp_z
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[topx]
type = DirichletBC
variable = disp_x
boundary = 'top_top'
value = 0.0
[]
[topy]
type = DirichletBC
variable = disp_y
boundary = 'top_top'
value = 0.0
[]
[topz]
type = FunctionDirichletBC
variable = disp_z
boundary = 'top_top'
function = '-${starting_point} * sin(2 * pi / 40 * t) + ${offset}'
[]
[]
[Executioner]
type = Transient
end_time = .025
dt = .025
dtmin = .001
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu superlu_dist NONZERO 1e-14 1e-5'
l_max_its = 15
nl_max_its = 30
nl_rel_tol = 1e-11
nl_abs_tol = 1e-12
line_search = 'basic'
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
csv = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[contact]
type = ContactDOFSetSize
variable = mortar_normal_lm
subdomain = 'secondary_lower'
execute_on = 'nonlinear timestep_end'
[]
[]
[VectorPostprocessors]
[contact-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_normal_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[]
(modules/contact/test/tests/pdass_problems/frictional_bouncing_block.i)
starting_point = 2e-1
offset = 1e-2
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks.e
uniform_refine = 0 # 1,2
patch_update_strategy = always
allow_renumbering = false
[]
[Variables]
[disp_x]
block = '1 2'
[]
[disp_y]
block = '1 2'
[]
[frictional_normal_lm]
block = 3
use_dual = true
[]
[frictional_tangential_lm]
block = 3
use_dual = true
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Modules/TensorMechanics/Master]
[all]
strain = FINITE
generate_output = 'stress_xx stress_yy'
block = '1 2'
[]
[]
[Materials]
[elasticity_2]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e3
poissons_ratio = 0.3
[]
[elasticity_1]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1 2'
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_normal_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
friction_lm = frictional_tangential_lm
mu = 0.4
c = 1.0e1
c_t = 1.0e1
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = '40'
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = '40'
value = 0.0
[]
[topy]
type = ADFunctionDirichletBC
variable = disp_y
boundary = 30
function = '${starting_point} * cos(2 * pi / 20 * t) + ${offset}'
preset = false
[]
[leftx]
type = ADFunctionDirichletBC
variable = disp_x
boundary = 30
function = '2e-2 * t'
# function = '0'
preset = false
[]
[]
[Executioner]
type = Transient
end_time = 7 # 70
dt = 0.25 # 0.1 for finer meshes (uniform_refine)
dtmin = .01
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -pc_svd_monitor '
'-snes_linesearch_monitor'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu superlu_dist NONZERO 1e-15 1e-5'
l_max_its = 30
nl_max_its = 40
line_search = 'none'
snesmf_reuse_base = false
nl_abs_tol = 1e-9
nl_rel_tol = 1e-9
l_tol = 1e-07 # Tightening l_tol can help with friction
[]
[Debug]
show_var_residual_norms = true
[]
[VectorPostprocessors]
[cont_press]
type = NodalValueSampler
variable = frictional_normal_lm
boundary = '10'
sort_by = x
execute_on = FINAL
[]
[friction]
type = NodalValueSampler
variable = frictional_tangential_lm
boundary = '10'
sort_by = x
execute_on = FINAL
[]
[]
[Outputs]
exodus = false
[checkfile]
type = CSV
show = 'cont_press friction'
start_time = 0.0
execute_vector_postprocessors_on = FINAL
[]
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'num_nl cumulative_nli contact cumulative_li num_l'
[num_nl]
type = NumNonlinearIterations
[]
[num_l]
type = NumLinearIterations
[]
[cumulative_nli]
type = CumulativeValuePostprocessor
postprocessor = num_nl
[]
[cumulative_li]
type = CumulativeValuePostprocessor
postprocessor = num_l
[]
[contact]
type = ContactDOFSetSize
variable = frictional_normal_lm
subdomain = '3'
execute_on = 'nonlinear timestep_end'
[]
[]
(modules/contact/test/tests/mortar_aux_kernels/frictional-mortar-3d-status.i)
starting_point = 0.04
offset = 0.00
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
[]
[AuxVariables]
[mortar_tangent_x]
family = LAGRANGE
order = FIRST
[]
[mortar_tangent_y]
family = LAGRANGE
order = FIRST
[]
[mortar_tangent_z]
family = LAGRANGE
order = FIRST
[]
[frictional_status]
family = LAGRANGE
order = FIRST
[]
[]
[AuxKernels]
[friction_x_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_x
component = 0
boundary = 'top_bottom'
[]
[friction_y_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_y
component = 1
boundary = 'top_bottom'
[]
[friction_z_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
tangent_one = mortar_tangential_lm
tangent_two = mortar_tangential_3d_lm
variable = mortar_tangent_z
component = 2
boundary = 'top_bottom'
[]
[frictional_state]
type = MortarFrictionalStateAux
tangent_one = mortar_tangential_lm
boundary = 'top_bottom'
contact_pressure = mortar_normal_lm
variable = frictional_status
mu = 0.4
[]
[]
[Mesh]
[top_block]
type = GeneratedMeshGenerator
dim = 3
nx = 2
ny = 2
nz = 1
xmin = -0.25
xmax = 0.25
ymin = -0.25
ymax = 0.25
zmin = -0.25
zmax = 0.25
elem_type = HEX8
[]
[rotate_top_block]
type = TransformGenerator
input = top_block
transform = ROTATE
vector_value = '0 0 0'
[]
[top_block_sidesets]
type = RenameBoundaryGenerator
input = rotate_top_block
old_boundary = '0 1 2 3 4 5'
new_boundary = 'top_bottom top_back top_right top_front top_left top_top'
[]
[top_block_id]
type = SubdomainIDGenerator
input = top_block_sidesets
subdomain_id = 1
[]
[bottom_block]
type = GeneratedMeshGenerator
dim = 3
nx = 1
ny = 1
nz = 1
xmin = -.5
xmax = .5
ymin = -.5
ymax = .5
zmin = -.3
zmax = -.25
elem_type = HEX8
[]
[bottom_block_id]
type = SubdomainIDGenerator
input = bottom_block
subdomain_id = 2
[]
[bottom_block_change_boundary_id]
type = RenameBoundaryGenerator
input = bottom_block_id
old_boundary = '0 1 2 3 4 5'
new_boundary = '100 101 102 103 104 105'
[]
[combined]
type = MeshCollectionGenerator
inputs = 'top_block_id bottom_block_change_boundary_id'
[]
[block_rename]
type = RenameBlockGenerator
input = combined
old_block = '1 2'
new_block = 'top_block bottom_block'
[]
[bottom_right_sideset]
type = SideSetsAroundSubdomainGenerator
input = block_rename
new_boundary = bottom_right
block = bottom_block
normal = '1 0 0'
[]
[bottom_left_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_right_sideset
new_boundary = bottom_left
block = bottom_block
normal = '-1 0 0'
[]
[bottom_top_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_left_sideset
new_boundary = bottom_top
block = bottom_block
normal = '0 0 1'
[]
[bottom_bottom_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_top_sideset
new_boundary = bottom_bottom
block = bottom_block
normal = '0 0 -1'
[]
[bottom_front_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_bottom_sideset
new_boundary = bottom_front
block = bottom_block
normal = '0 1 0'
[]
[bottom_back_sideset]
type = SideSetsAroundSubdomainGenerator
input = bottom_front_sideset
new_boundary = bottom_back
block = bottom_block
normal = '0 -1 0'
[]
[secondary]
input = bottom_back_sideset
type = LowerDBlockFromSidesetGenerator
sidesets = 'top_bottom' # top_back top_left'
new_block_id = '10001'
new_block_name = 'secondary_lower'
[]
[primary]
input = secondary
type = LowerDBlockFromSidesetGenerator
sidesets = 'bottom_top'
new_block_id = '10000'
new_block_name = 'primary_lower'
[]
uniform_refine = 0
allow_renumbering = false
[]
[Variables]
[mortar_normal_lm]
block = 'secondary_lower'
use_dual = true
scaling = 1.0e2
[]
[mortar_tangential_lm]
block = 'secondary_lower'
use_dual = true
scaling = 1.0e2
[]
[mortar_tangential_3d_lm]
block = 'secondary_lower'
use_dual = true
scaling = 1.0e2
[]
[]
[Modules/TensorMechanics/Master]
[all]
add_variables = true
strain = FINITE
block = '1 2'
use_automatic_differentiation = false
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
[]
[]
[Materials]
[tensor]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1.0e2
# We should try with nonzero Poisson ratio
poissons_ratio = 0.0
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[tensor_1000]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e5
poissons_ratio = 0.0
[]
[stress_1000]
type = ComputeFiniteStrainElasticStress
block = '2'
[]
[]
[Constraints]
[friction]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
use_displaced_mesh = true
mu = 0.4
c = 1e1
c_t = 1.0e1
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
interpolate_normals = false
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[normal_z]
type = NormalMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_normal_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_x]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_x
component = x
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_y]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_y
component = y
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[tangential_dir_z]
type = TangentialMortarMechanicalContact
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
variable = mortar_tangential_3d_lm
secondary_variable = disp_z
component = z
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
interpolate_normals = false
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[botz]
type = DirichletBC
variable = disp_z
boundary = 'bottom_left bottom_right bottom_front bottom_back'
value = 0.0
[]
[topx]
type = FunctionDirichletBC
variable = disp_x
boundary = 'top_top'
function = '0.16*t'
[]
[topy]
type = FunctionDirichletBC
variable = disp_y
boundary = 'top_top'
function = '0.1*t'
[]
[topz]
type = FunctionDirichletBC
variable = disp_z
boundary = 'top_top'
function = '-${starting_point} * sin(2 * pi / 0.4 * t) + ${offset}'
[]
[]
[Executioner]
type = Transient
end_time = 0.1
dt = .02
dtmin = .02
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu superlu_dist NONZERO 1e-13 1e-7'
l_max_its = 15
nl_max_its = 90
nl_rel_tol = 1e-11
nl_abs_tol = 1e-11
line_search = 'basic'
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
csv = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[contact]
type = ContactDOFSetSize
variable = mortar_normal_lm
subdomain = 'secondary_lower'
execute_on = 'nonlinear timestep_end'
[]
[]
[VectorPostprocessors]
[contact-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_normal_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[frictional-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[frictional-pressure-3d]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_3d_lm
sort_by = 'id'
execute_on = NONLINEAR
[]
[tangent_x]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_x
sort_by = 'id'
execute_on = NONLINEAR
[]
[tangent_y]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_y
sort_by = 'id'
execute_on = NONLINEAR
[]
[]