- disp_xThe x displacement variable
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The x displacement variable
- disp_yThe y displacement variable
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The y displacement variable
- lm_variable_normalThe Lagrange multiplier variable representing the contact pressure.
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The Lagrange multiplier variable representing the contact pressure.
- lm_variable_tangential_oneThe Lagrange multiplier variable representing the tangential contact pressure along the first tangential direction (the only one in two dimensions).
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The Lagrange multiplier variable representing the tangential contact pressure along the first tangential direction (the only one in two dimensions).
- 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.
- secondary_variablePrimal variable on secondary surface.
C++ Type:VariableName
Unit:(no unit assumed)
Controllable:No
Description:Primal variable on secondary surface.
LMWeightedVelocitiesUserObject
Description
The LMWeightedVelocitiesUserObject object provides the Lagrange multiplier and interpolation function for the enforcement of mortar mechanical constraints. In essence, the Lagrange multiplier is provided to TangentialMortarMechanicalContact to enforce friction via a Coulomb model. This object is set up automatically when using the contact action ContactAction
Input Parameters
- aux_lmAuxiliary Lagrange multiplier variable that is utilized together with the Petrov-Galerkin approach.
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Auxiliary Lagrange multiplier variable that is utilized together with the Petrov-Galerkin approach.
- 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>
Unit:(no unit assumed)
Controllable:No
Description:The z displacement variable
- ghost_higher_d_neighborsFalseWhether we should ghost higher-dimensional neighbors. This is necessary when we are doing second order mortar with finite volume primal variables, because in order for the method to be second order we must use cell gradients, which couples in the neighbor cells.
Default:False
C++ Type:bool
Controllable:No
Description:Whether we should ghost higher-dimensional neighbors. This is necessary when we are doing second order mortar with finite volume primal variables, because in order for the method to be second order we must use cell gradients, which couples in the neighbor cells.
- 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_normalsFalseWhether 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:False
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
- lm_variable_tangential_twoThe Lagrange multiplier variable representing the tangential contact pressure along the second tangential direction.
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The Lagrange multiplier variable representing the tangential contact pressure along the second tangential direction.
- minimum_projection_angle40Parameter to control which angle (in degrees) is admissible for the creation of mortar segments. If set to a value close to zero, very oblique projections are allowed, which can result in mortar segments solving physics not meaningfully, and overprojection of primary nodes onto the mortar segment mesh in extreme cases. This parameter is mostly intended for mortar mesh debugging purposes in two dimensions.
Default:40
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Parameter to control which angle (in degrees) is admissible for the creation of mortar segments. If set to a value close to zero, very oblique projections are allowed, which can result in mortar segments solving physics not meaningfully, and overprojection of primary nodes onto the mortar segment mesh in extreme cases. This parameter is mostly intended for mortar mesh debugging purposes in two dimensions.
- 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
- primary_variablePrimal variable on primary surface. If this parameter is not provided then the primary variable will be initialized to the secondary variable
C++ Type:VariableName
Unit:(no unit assumed)
Controllable:No
Description:Primal variable on primary surface. If this parameter is not provided then the primary variable will be initialized to the secondary variable
- use_petrov_galerkinFalseWhether to use the Petrov-Galerkin approach.
Default:False
C++ Type:bool
Controllable:No
Description:Whether to use the Petrov-Galerkin approach.
Optional Parameters
- allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
Default:False
C++ Type:bool
Controllable:No
Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).
- execution_order_group0Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
Default:0
C++ Type:int
Controllable:No
Description:Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.
- force_postauxFalseForces the UserObject to be executed in POSTAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in POSTAUX
- force_preauxFalseForces the UserObject to be executed in PREAUX
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREAUX
- force_preicFalseForces the UserObject to be executed in PREIC during initial setup
Default:False
C++ Type:bool
Controllable:No
Description:Forces the UserObject to be executed in PREIC during initial setup
Execution Scheduling 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.
- 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
- 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
Unit:(no unit assumed)
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.
- use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Material Property Retrieval Parameters
Input Files
- (modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d.i)
- (modules/contact/test/tests/3d-mortar-contact/half_sphere_nodal_geometry.i)
- (modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d-dynamics.i)
- (modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d.i)
- (modules/contact/test/tests/pdass_problems/ironing.i)
- (modules/contact/test/tests/mortar_aux_kernels/block-dynamics-aux-wear-vel.i)
- (modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d-function.i)
- (modules/contact/test/tests/bouncing-block-contact/frictional-nodal-min-normal-lm-mortar-pdass-tangential-lm-mortar-disp.i)
- (modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d-dynamics-light-function.i)
- (modules/contact/test/tests/mortar_dynamics/block-dynamics-friction.i)
- (modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d_pg.i)
- (modules/contact/test/tests/bouncing-block-contact/variational-frictional.i)
- (modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d-dynamics-light.i)
- (modules/contact/test/tests/pdass_problems/frictional_bouncing_block.i)
- (modules/contact/test/tests/mortar_aux_kernels/block-dynamics-aux-fretting-wear-test-projection_angle.i)
- (modules/contact/test/tests/mortar_aux_kernels/frictional-mortar-3d-status.i)
- (modules/contact/test/tests/mortar_dynamics/block-dynamics-friction-creep.i)
- (modules/contact/test/tests/pdass_problems/cylinder_friction.i)
- (modules/contact/test/tests/mortar_aux_kernels/block-dynamics-aux-fretting-wear-test.i)
(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
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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/3d-mortar-contact/half_sphere_nodal_geometry.i)
[Mesh]
[generated_mesh]
type = FileMeshGenerator
file = half_sphere.e
[]
[secondary]
type = LowerDBlockFromSidesetGenerator
new_block_id = 2002
new_block_name = 'secondary_lower'
sidesets = '202'
input = generated_mesh
[]
[primary]
type = LowerDBlockFromSidesetGenerator
new_block_id = 1002
sidesets = '102'
new_block_name = 'primary_lower'
input = secondary
[]
patch_size = 20
patch_update_strategy = always
uniform_refine = 0
[]
[Problem]
kernel_coverage_check = false
[]
[GlobalParams]
displacements = 'disp_x disp_y disp_z'
volumetric_locking_correction = true
order = FIRST
family = LAGRANGE
[]
[Variables]
[frictional_normal_lm]
block = 'secondary_lower'
use_dual = true
[]
[frictional_tangential_lm]
block = 'secondary_lower'
use_dual = true
[]
[frictional_tangential_dir_lm]
block = 'secondary_lower'
use_dual = true
[]
[]
[AuxVariables]
[saved_x]
[]
[saved_y]
[]
[saved_z]
[]
[tangent_x]
family = LAGRANGE
order = FIRST
[]
[tangent_y]
family = LAGRANGE
order = FIRST
[]
[tangent_z]
family = LAGRANGE
order = FIRST
[]
[]
[AuxKernels]
[friction_x_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 102
secondary_boundary = 202
tangent_one = frictional_tangential_lm
tangent_two = frictional_tangential_dir_lm
variable = tangent_x
component = 0
boundary = 202
[]
[friction_y_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 102
secondary_boundary = 202
tangent_one = frictional_tangential_lm
tangent_two = frictional_tangential_dir_lm
variable = tangent_y
component = 1
boundary = 202
[]
[friction_z_component]
type = MortarFrictionalPressureVectorAux
primary_boundary = 102
secondary_boundary = 202
tangent_one = frictional_tangential_lm
tangent_two = frictional_tangential_dir_lm
variable = tangent_z
component = 2
boundary = 202
[]
[]
[Functions]
[push_down]
type = ParsedFunction
expression = 'if(t < 1.5, -t, t-3.0)'
[]
[force_z]
type = ParsedFunction
expression = 'if(t < 0.008, 0.0, (-t)*2.0e2 -t*t*100.0)' # 4.0e5
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[all]
add_variables = true
strain = FINITE
block = '1 2'
use_automatic_differentiation = true
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
save_in = 'saved_x saved_y saved_z'
use_finite_deform_jacobian = true
[]
[]
[BCs]
[botz]
type = ADDirichletBC
variable = disp_z
boundary = 101
value = 0.0
[]
[boty]
type = ADDirichletBC
variable = disp_y
boundary = 101
value = 0.0
[]
[botx]
type = ADDirichletBC
variable = disp_x
boundary = 101
value = 0.0
[]
[topz]
type = ADFunctionDirichletBC
variable = disp_z
boundary = '201'
function = push_down
[]
[topy]
type = ADDirichletBC
variable = disp_y
boundary = '201 202'
value = 0.0
[]
[topx]
type = ADDirichletBC
variable = disp_x
boundary = '201 202'
value = 0.0
[]
[]
[Materials]
[tensor]
type = ADComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1.40625e7
poissons_ratio = 0.25
[]
[stress]
type = ADComputeFiniteStrainElasticStress
block = '1'
[]
[tensor_1000]
type = ADComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e5
poissons_ratio = 0.0
[]
[stress_1000]
type = ADComputeFiniteStrainElasticStress
block = '2'
[]
[]
[Postprocessors]
[stress_zz]
type = ElementAverageValue
variable = stress_zz
block = 1
[]
[resid_z]
type = NodalSum
variable = saved_z
boundary = 201
[]
[disp_z]
type = NodalExtremeValue
variable = disp_z
boundary = 201
[]
[]
[Executioner]
type = Transient
solve_type = 'PJFNK'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_package -pc_factor_shift_type '
'-pc_factor_shift_amount -mat_mffd_err'
petsc_options_value = 'lu superlu_dist nonzero 1e-14 1e-5'
line_search = 'none'
l_max_its = 60
nl_max_its = 50
dt = 0.004
dtmin = 0.00001
# end_time = 1.8
end_time = 0.000
nl_rel_tol = 1.0e-6 #1e-7 # -8, -6 to avoid many iterations. Switch it March 2021
nl_abs_tol = 1e-6 # 6 if no friction
l_tol = 1e-4
[]
[Outputs]
exodus = true
csv = true
print_linear_residuals = true
perf_graph = true
[console]
type = Console
max_rows = 5
[]
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
lm_variable_normal = frictional_normal_lm
lm_variable_tangential_one = frictional_tangential_lm
lm_variable_tangential_two = frictional_tangential_dir_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
debug_mesh = true
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_normal_lm
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
use_displaced_mesh = true
friction_lm = frictional_tangential_lm
friction_lm_dir = frictional_tangential_dir_lm
c = 7.0e4
c_t = 7.0e4
mu = 0.4
debug_mesh = true
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_gap_uo = weighted_vel_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_gap_uo = weighted_vel_uo
[]
[normal_z]
type = NormalMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_normal_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_gap_uo = weighted_vel_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_z]
type = TangentialMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_tangential_lm
secondary_variable = disp_z
component = z
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_x_dir]
type = TangentialMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_tangential_dir_lm
secondary_variable = disp_x
component = x
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y_dir]
type = TangentialMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_tangential_dir_lm
secondary_variable = disp_y
component = y
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_z_dir]
type = TangentialMortarMechanicalContact
primary_boundary = 102
secondary_boundary = 202
primary_subdomain = 1002
secondary_subdomain = 2002
variable = frictional_tangential_dir_lm
secondary_variable = disp_z
component = z
direction = direction_2
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
weighted_velocities_uo = weighted_vel_uo
[]
[]
[Debug]
show_var_residual_norms = true
[]
(modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d-dynamics.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
[]
[]
[Physics/SolidMechanics/Dynamic]
[all]
add_variables = true
hht_alpha = 0.0
newmark_beta = 0.25
newmark_gamma = 0.5
mass_damping_coefficient = 0.0
stiffness_damping_coefficient = 0.1
displacements = 'disp_x disp_y disp_z'
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
block = '1 2'
strain = FINITE
density = density
[]
[]
[Materials]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[friction]
type = ComputeDynamicFrictionalForceLMMechanicalContact
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
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
mu = 0.4
c = 1e4
c_t = 1.0e4
newmark_gamma = 0.5
newmark_beta = 0.25
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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'
petsc_options_value = 'lu NONZERO 1e-14'
nl_rel_tol = 1e-11
nl_abs_tol = 1e-11
line_search = 'basic'
[TimeIntegrator]
type = NewmarkBeta
gamma = 0.5
beta = 0.25
[]
[]
[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 = 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/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
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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/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
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 10000
secondary_subdomain = 10001
lm_variable_normal = frictionless_normal_lm
lm_variable_tangential_one = tangential_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
(modules/contact/test/tests/mortar_aux_kernels/block-dynamics-aux-wear-vel.i)
starting_point = 0.5e-1
offset = -0.05
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks.e
[]
[Variables]
[disp_x]
block = '1 2'
[]
[disp_y]
block = '1 2'
[]
[normal_lm]
block = 3
use_dual = true
scaling = 1.0e3
[]
[frictional_lm]
block = 3
use_dual = true
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y'
generate_output = 'stress_xx stress_yy'
strain = FINITE
block = '1 2'
stiffness_damping_coefficient = 1.0
hht_alpha = 0.0
[]
[inertia_x]
type = InertialForce
variable = disp_x
velocity = vel_x
acceleration = accel_x
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[inertia_y]
type = InertialForce
variable = disp_y
velocity = vel_y
acceleration = accel_y
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[]
[Materials]
[elasticity_2]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[elasticity_1]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e8
poissons_ratio = 0.3
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1 2'
[]
[strain]
type = ComputeFiniteStrain
block = '1 2'
[]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '7750'
[]
[]
[AuxVariables]
[worn_depth]
block = '3'
[]
[gap_vel]
block = '3'
[]
[vel_x]
block = '1 2'
[]
[accel_x]
block = '1 2'
[]
[vel_y]
block = '1 2'
[]
[accel_y]
block = '1 2'
[]
[vel_z]
block = '1 2'
[]
[accel_z]
block = '1 2'
[]
[]
[AuxKernels]
[gap_vel]
type = WeightedGapVelAux
variable = gap_vel
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
disp_x = disp_x
disp_y = disp_y
[]
[worn_depth]
type = MortarArchardsLawAux
variable = worn_depth
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
displacements = 'disp_x disp_y'
friction_coefficient = 0.5
energy_wear_coefficient = 1.0
normal_pressure = normal_lm
[]
[accel_x]
type = NewmarkAccelAux
variable = accel_x
displacement = disp_x
velocity = vel_x
beta = 0.25
execute_on = 'linear timestep_end'
[]
[vel_x]
type = NewmarkVelAux
variable = vel_x
acceleration = accel_x
gamma = 0.5
execute_on = 'linear timestep_end'
[]
[accel_y]
type = NewmarkAccelAux
variable = accel_y
displacement = disp_y
velocity = vel_y
beta = 0.25
execute_on = 'linear timestep_end'
[]
[vel_y]
type = NewmarkVelAux
variable = vel_y
acceleration = accel_y
gamma = 0.5
execute_on = 'linear timestep_end'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
secondary_variable = disp_x
lm_variable_normal = normal_lm
lm_variable_tangential_one = frictional_lm
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeDynamicFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
c = 1e4
c_t = 1e6
mu = 0.15
friction_lm = frictional_lm
capture_tolerance = 1.0e-5
newmark_beta = 0.25
newmark_gamma = 0.5
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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(16.0 * pi / 4 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 50
function = '1e-2 * t'
[]
[]
[Executioner]
type = Transient
end_time = 0.3
dt = 0.03
dtmin = .002
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason -ksp_converged_reason -pc_svd_monitor '
'-snes_linesearch_monitor -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount'
petsc_options_value = 'lu superlu_dist NONZERO 1e-15'
nl_max_its = 40
nl_abs_tol = 1.0e-11
nl_rel_tol = 1.0e-11
line_search = 'none'
snesmf_reuse_base = true
[TimeIntegrator]
type = NewmarkBeta
beta = 0.25
gamma = 0.5
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
checkpoint = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[num_nl]
type = NumNonlinearIterations
[]
[cumulative]
type = CumulativeValuePostprocessor
postprocessor = num_nl
[]
[contact]
type = ContactDOFSetSize
variable = normal_lm
subdomain = '3'
execute_on = 'nonlinear timestep_end'
[]
[]
(modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d-function.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
[]
[]
[Functions]
# x: Contact pressure
# y: Magnitude of tangential relative velocity
# z: Temperature (to be implemented)
[mu_function]
type = ParsedFunction
expression = '0.3 + (0.7 - 0.3) * 2.17^(-0.5/y) - x/10000'
[]
[]
[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
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
[]
[]
[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
function_friction = mu_function
c = 1e4
c_t = 1.0e6
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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 = 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 / 40 * t) + ${offset}'
[]
[]
[Executioner]
type = Transient
end_time = .05
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/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
[]
[]
[UserObjects]
[weighted_velocities_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = frictional_normal_lm
lm_variable_tangential_one = frictional_tangential_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = 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
weighted_gap_uo = weighted_velocities_uo
weighted_velocities_uo = weighted_velocities_uo
[]
[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
weighted_gap_uo = weighted_velocities_uo
[]
[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
weighted_gap_uo = weighted_velocities_uo
[]
[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
weighted_velocities_uo = weighted_velocities_uo
[]
[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
weighted_velocities_uo = weighted_velocities_uo
[]
[]
[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/mortar_dynamics/frictional-mortar-3d-dynamics-light-function.i)
[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 = 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 = 2
ny = 2
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
[]
[Functions]
# x: Contact pressure
# y: Magnitude of tangential relative velocity
# z: Temperature (to be implemented)
[mu_function]
type = ParsedFunction
expression = '0.3 + 0.5 * 2.17^(-x/100) - 10.0 * y'
[]
[]
[Variables]
[mortar_normal_lm]
block = 'secondary_lower'
use_dual = true
scaling = 1e-3
[]
[mortar_tangential_lm]
block = 'secondary_lower'
use_dual = true
scaling = 1e-3
[]
[mortar_tangential_3d_lm]
block = 'secondary_lower'
use_dual = true
scaling = 1e-3
[]
[]
[Physics/SolidMechanics/Dynamic]
[all]
add_variables = true
hht_alpha = 0.0
newmark_beta = 0.25
newmark_gamma = 0.5
mass_damping_coefficient = 0.0
stiffness_damping_coefficient = 0.02
displacements = 'disp_x disp_y disp_z'
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
block = '1 2'
strain = FINITE
density = density
[]
[]
[Materials]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[friction]
type = ComputeDynamicFrictionalForceLMMechanicalContact
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
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
c = 1e5
c_t = 1.0e5
newmark_beta = 0.25
newmark_gamma = 0.5
interpolate_normals = false
correct_edge_dropping = true
capture_tolerance = 1e-04
function_friction = mu_function
[]
[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
correct_edge_dropping = true
weighted_gap_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_gap_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_gap_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[]
[BCs]
[botx]
type = DirichletBC
variable = disp_x
boundary = 'bottom_left bottom_right bottom_front bottom_back bottom_top bottom_bottom'
value = 0.0
[]
[boty]
type = DirichletBC
variable = disp_y
boundary = 'bottom_left bottom_right bottom_front bottom_back bottom_top bottom_bottom'
value = 0.0
[]
[botz]
type = DirichletBC
variable = disp_z
boundary = 'bottom_left bottom_right bottom_front bottom_back bottom_top bottom_bottom'
value = 0.0
[]
[topx]
type = FunctionDirichletBC
variable = disp_x
boundary = 'top_top'
function = '0.1*t'
[]
[topy]
type = DirichletBC
variable = disp_y
boundary = 'top_top'
value = 0.0
[]
[topz]
type = FunctionDirichletBC
variable = disp_z
boundary = 'top_top'
function = '-0.1*t'
[]
[]
[Executioner]
type = Transient
end_time = .04
dt = .02
dtmin = .001
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_shift_type'
petsc_options_value = ' lu NONZERO '
nl_rel_tol = 5e-13
nl_abs_tol = 5e-13
line_search = 'basic'
[TimeIntegrator]
type = NewmarkBeta
gamma = 0.5
beta = 0.25
[]
[]
[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/mortar_dynamics/block-dynamics-friction.i)
starting_point = 2e-1
offset = -0.19
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks.e
allow_renumbering = false
[]
[Variables]
[disp_x]
block = '1 2'
[]
[disp_y]
block = '1 2'
[]
[mechanical_normal_lm]
block = 3
use_dual = true
[]
[mechanical_tangential_lm]
block = 3
use_dual = true
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y'
generate_output = 'stress_xx stress_yy'
strain = FINITE
block = '1 2'
stiffness_damping_coefficient = 0.05
hht_alpha = 0.0
[]
[inertia_x]
type = InertialForce
variable = disp_x
velocity = vel_x
acceleration = accel_x
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[inertia_y]
type = InertialForce
variable = disp_y
velocity = vel_y
acceleration = accel_y
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[]
[Materials]
[elasticity_2]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[elasticity_1]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e8
poissons_ratio = 0.3
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1 2'
[]
[strain]
type = ComputeFiniteStrain
block = '1 2'
[]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '7750'
[]
[]
[AuxVariables]
[vel_x]
block = '1 2'
[]
[accel_x]
block = '1 2'
[]
[vel_y]
block = '1 2'
[]
[accel_y]
block = '1 2'
[]
[vel_z]
block = '1 2'
[]
[accel_z]
block = '1 2'
[]
[gap]
block = 3
[]
[]
[AuxKernels]
[gap]
type = WeightedGapAux
variable = gap
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
use_displaced_mesh = true
[]
[accel_x]
type = NewmarkAccelAux
variable = accel_x
displacement = disp_x
velocity = vel_x
beta = 0.25
execute_on = 'LINEAR timestep_end'
[]
[vel_x]
type = NewmarkVelAux
variable = vel_x
acceleration = accel_x
gamma = 0.5
execute_on = 'LINEAR timestep_end'
[]
[accel_y]
type = NewmarkAccelAux
variable = accel_y
displacement = disp_y
velocity = vel_y
beta = 0.25
execute_on = 'LINEAR timestep_end'
[]
[vel_y]
type = NewmarkVelAux
variable = vel_y
acceleration = accel_y
gamma = 0.5
execute_on = 'LINEAR timestep_end'
[]
[]
# User object provides the contact force (e.g. LM)
# for the application of the generalized force
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = mechanical_normal_lm
lm_variable_tangential_one = mechanical_tangential_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeDynamicFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = mechanical_normal_lm
friction_lm = mechanical_tangential_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
c = 1e4
c_t = 1e4
mu = 0.5
newmark_beta = 0.25
newmark_gamma = 0.5
capture_tolerance = 1.0e-5
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = mechanical_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = mechanical_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = mechanical_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = mechanical_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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 / 4 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 30 # 50
function = '0' # '1e-2*t'
[]
[]
[Executioner]
type = Transient
end_time = 75
dt = 0.05
dtmin = .005
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'
nl_max_its = 50
line_search = 'none'
snesmf_reuse_base = false
[TimeIntegrator]
type = NewmarkBeta
beta = 0.25
gamma = 0.5
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
csv = true
checkpoint = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[VectorPostprocessors]
[mechanical_tangential_lm]
type = NodalValueSampler
block = '3'
variable = mechanical_tangential_lm
sort_by = 'x'
execute_on = TIMESTEP_END
[]
[]
(modules/contact/test/tests/3d-mortar-contact/frictional-mortar-3d_pg.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
[]
[aux_lm]
block = 'secondary_lower'
use_dual = false
[]
[]
[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
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
use_petrov_galerkin = true
aux_lm = aux_lm
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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
[]
[contact_action_normal_lm]
block = 4
scaling = 1e3
[]
[contact_action_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
[]
[]
[UserObjects]
[weighted_velocities_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
lm_variable_normal = contact_action_normal_lm
lm_variable_tangential_one = contact_action_tangential_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
correct_edge_dropping = true
[]
[]
[Constraints]
[frictional_normal_lm]
type = ComputeFrictionalForceLMMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = contact_action_normal_lm
friction_lm = contact_action_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
correct_edge_dropping = true
weighted_velocities_uo = weighted_velocities_uo
weighted_gap_uo = weighted_velocities_uo
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = contact_action_normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_velocities_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = contact_action_normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_velocities_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = contact_action_tangential_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_velocities_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 10
secondary_boundary = 20
primary_subdomain = 3
secondary_subdomain = 4
variable = contact_action_tangential_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_velocities_uo
[]
[]
[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
hide = procid
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
(modules/contact/test/tests/mortar_dynamics/frictional-mortar-3d-dynamics-light.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 = 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 = 2
ny = 2
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
[]
[mortar_tangential_lm]
block = 'secondary_lower'
use_dual = true
[]
[mortar_tangential_3d_lm]
block = 'secondary_lower'
use_dual = true
[]
[]
[Physics/SolidMechanics/Dynamic]
[all]
add_variables = true
hht_alpha = 0.0
newmark_beta = 0.25
newmark_gamma = 0.5
mass_damping_coefficient = 0.0
stiffness_damping_coefficient = 0.1
displacements = 'disp_x disp_y disp_z'
generate_output = 'stress_xx stress_xy stress_xz stress_yy stress_zz'
block = '1 2'
strain = FINITE
density = density
[]
[]
[Materials]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '1.0'
[]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[friction]
type = ComputeDynamicFrictionalForceLMMechanicalContact
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
friction_lm = mortar_tangential_lm
friction_lm_dir = mortar_tangential_3d_lm
mu = 0.4
c = 1e4
c_t = 1.0e4
newmark_beta = 0.25
newmark_gamma = 0.5
correct_edge_dropping = 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
correct_edge_dropping = true
weighted_gap_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_gap_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_gap_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[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
correct_edge_dropping = true
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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) + ${offset}'
[]
[]
[Executioner]
type = Transient
end_time = .025
dt = .025
dtmin = .001
solve_type = 'PJFNK'
petsc_options = '-snes_converged_reason -ksp_converged_reason -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_shift_type -pc_factor_shift_amount'
petsc_options_value = 'lu NONZERO 1e-14'
nl_rel_tol = 1e-11
nl_abs_tol = 1e-11
line_search = 'basic'
[TimeIntegrator]
type = NewmarkBeta
gamma = 0.5
beta = 0.25
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
csv = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[contact]
type = ContactDOFSetSize
variable = mortar_normal_lm
subdomain = 'secondary_lower'
execute_on = 'nonlinear timestep_end'
[]
[]
[VectorPostprocessors]
[contact-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_normal_lm
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[frictional-pressure]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_lm
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[frictional-pressure-3d]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangential_3d_lm
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[tangent_x]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_x
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[tangent_y]
type = NodalValueSampler
block = secondary_lower
variable = mortar_tangent_y
sort_by = 'id'
execute_on = TIMESTEP_END
[]
[]
(modules/contact/test/tests/pdass_problems/frictional_bouncing_block.i)
starting_point = 2e-1
offset = 1e-2
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks.e
uniform_refine = 0 # 1,2
patch_update_strategy = always
allow_renumbering = false
[]
[Variables]
[disp_x]
block = '1 2'
[]
[disp_y]
block = '1 2'
[]
[frictional_normal_lm]
block = 3
use_dual = true
[]
[frictional_tangential_lm]
block = 3
use_dual = true
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = frictional_normal_lm
lm_variable_tangential_one = frictional_tangential_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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/block-dynamics-aux-fretting-wear-test-projection_angle.i)
starting_point = 0.5e-1
offset = -0.045
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks-multiple-projections-lowerd.e
[]
[Variables]
[disp_x]
block = '1 2'
[]
[disp_y]
block = '1 2'
[]
[normal_lm]
block = 3
use_dual = true
# scaling = 1.0e-5
[]
[frictional_lm]
block = 3
use_dual = true
# scaling = 1.0e-5
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y'
generate_output = 'stress_xx stress_yy'
strain = FINITE
block = '1 2'
stiffness_damping_coefficient = 1.0
hht_alpha = 0.0
[]
[inertia_x]
type = InertialForce
variable = disp_x
velocity = vel_x
acceleration = accel_x
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[inertia_y]
type = InertialForce
variable = disp_y
velocity = vel_y
acceleration = accel_y
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[]
[Materials]
[elasticity_2]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[elasticity_1]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e8
poissons_ratio = 0.3
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1 2'
[]
[strain]
type = ComputeFiniteStrain
block = '1 2'
[]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '7750'
[]
[]
[AuxVariables]
[worn_depth]
block = '3'
[]
[gap_vel]
block = '3'
[]
[vel_x]
block = '1 2'
[]
[accel_x]
block = '1 2'
[]
[vel_y]
block = '1 2'
[]
[accel_y]
block = '1 2'
[]
[vel_z]
block = '1 2'
[]
[accel_z]
block = '1 2'
[]
[]
[AuxKernels]
[gap_vel]
type = WeightedGapVelAux
variable = gap_vel
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
disp_x = disp_x
disp_y = disp_y
debug_mesh = true
minimum_projection_angle = 0.0
[]
[worn_depth]
type = MortarArchardsLawAux
variable = worn_depth
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
displacements = 'disp_x disp_y'
friction_coefficient = 0.5
energy_wear_coefficient = 1.0e-6
normal_pressure = normal_lm
execute_on = 'TIMESTEP_END'
debug_mesh = true
minimum_projection_angle = 0.0
[]
[accel_x]
type = NewmarkAccelAux
variable = accel_x
displacement = disp_x
velocity = vel_x
beta = 0.25
execute_on = 'linear timestep_end'
[]
[vel_x]
type = NewmarkVelAux
variable = vel_x
acceleration = accel_x
gamma = 0.5
execute_on = 'linear timestep_end'
[]
[accel_y]
type = NewmarkAccelAux
variable = accel_y
displacement = disp_y
velocity = vel_y
beta = 0.25
execute_on = 'linear timestep_end'
[]
[vel_y]
type = NewmarkVelAux
variable = vel_y
acceleration = accel_y
gamma = 0.5
execute_on = 'linear timestep_end'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
secondary_variable = disp_x
lm_variable_normal = normal_lm
lm_variable_tangential_one = frictional_lm
disp_x = disp_x
disp_y = disp_y
debug_mesh = true
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeDynamicFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
wear_depth = worn_depth
c = 1e6
c_t = 1e6
normalize_c = true
mu = 0.5
friction_lm = frictional_lm
capture_tolerance = 1.0e-5
newmark_beta = 0.25
newmark_gamma = 0.5
debug_mesh = true
minimum_projection_angle = 0.0
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
minimum_projection_angle = 0.0
weighted_gap_uo = weighted_vel_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
minimum_projection_angle = 0.0
weighted_gap_uo = weighted_vel_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
minimum_projection_angle = 0.0
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
debug_mesh = true
minimum_projection_angle = 0.0
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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(4.0 * pi / 4 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 50
function = '1e-2 * (cos(32.0 * pi / 4 * t) - 1.0)'
[]
[]
[Executioner]
type = Transient
end_time = 0.0
dt = 0.05
dtmin = .002
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason -ksp_converged_reason -pc_svd_monitor '
'-snes_linesearch_monitor -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount'
petsc_options_value = 'lu superlu_dist NONZERO 1e-15'
nl_max_its = 40
l_max_its = 15
line_search = 'l2'
snesmf_reuse_base = true
[TimeIntegrator]
type = NewmarkBeta
beta = 0.25
gamma = 0.5
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
checkpoint = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'num_nl cumulative contact'
[num_nl]
type = NumNonlinearIterations
[]
[cumulative]
type = CumulativeValuePostprocessor
postprocessor = num_nl
[]
[contact]
type = ContactDOFSetSize
variable = 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
[]
[]
[Physics/SolidMechanics/QuasiStatic]
[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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 'bottom_top'
secondary_boundary = 'top_bottom'
primary_subdomain = 'primary_lower'
secondary_subdomain = 'secondary_lower'
secondary_variable = disp_x
lm_variable_normal = mortar_normal_lm
lm_variable_tangential_one = mortar_tangential_lm
lm_variable_tangential_two = mortar_tangential_3d_lm
disp_x = disp_x
disp_y = disp_y
disp_z = disp_z
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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
[]
[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/mortar_dynamics/block-dynamics-friction-creep.i)
starting_point = 1e-1
offset = -0.095
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks.e
[]
[Variables]
[normal_lm]
block = 3
use_dual = true
[]
[frictional_lm]
block = 3
use_dual = true
[]
[]
[AuxVariables]
[creep_strain_xx]
order = CONSTANT
family = MONOMIAL
block = '2'
[]
[creep_strain_yy]
order = CONSTANT
family = MONOMIAL
block = '2'
[]
[creep_strain_xy]
order = CONSTANT
family = MONOMIAL
block = '2'
[]
[]
[AuxKernels]
[creep_strain_xx]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_xx
index_i = 0
index_j = 0
block = '2'
[]
[creep_strain_yy]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_yy
index_i = 1
index_j = 1
block = '2'
[]
[creep_strain_xy]
type = RankTwoAux
rank_two_tensor = creep_strain
variable = creep_strain_xy
index_i = 0
index_j = 1
block = '2'
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Physics/SolidMechanics/Dynamic]
[all]
add_variables = true
hht_alpha = 0.0
newmark_beta = 0.25
newmark_gamma = 0.5
mass_damping_coefficient = 0.0
stiffness_damping_coefficient = 0.01
displacements = 'disp_x disp_y'
generate_output = 'stress_xx stress_yy'
block = '1 2'
strain = FINITE
[]
[]
[Materials]
[elasticity_2]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[elasticity_1]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e8
poissons_ratio = 0.3
[]
[multiple_inelastic]
type = ComputeMultipleInelasticStress
inelastic_models = 'creep'
block = '2'
[]
[creep]
type = PowerLawCreepStressUpdate
coefficient = 1.0e-23 # 10e-24
n_exponent = 4
activation_energy = 0
block = '2'
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1'
[]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '775'
[]
[]
# User object provides the contact force (e.g. LM)
# for the application of the generalized force
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
lm_variable_normal = normal_lm
lm_variable_tangential_one = frictional_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeDynamicFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
friction_lm = frictional_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
c = 1e4
c_t = 1e4
mu = 0.5
interpolate_normals = false
newmark_beta = 0.25
newmark_gamma = 0.5
capture_tolerance = 1e-04
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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 / 4 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 30 # 50
function = '1e-2*t' #'0.1 *sin(2 * pi / 12 * t)'
[]
[]
[Executioner]
type = Transient
end_time = 0.25
dt = 0.05
dtmin = 0.05
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'
nl_max_its = 50
line_search = 'none'
snesmf_reuse_base = false
[TimeIntegrator]
type = NewmarkBeta
beta = 0.25
gamma = 0.5
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
checkpoint = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'num_nl cumulative contact'
[num_nl]
type = NumNonlinearIterations
[]
[cumulative]
type = CumulativeValuePostprocessor
postprocessor = num_nl
[]
[contact]
type = ContactDOFSetSize
variable = normal_lm
subdomain = '3'
execute_on = 'nonlinear timestep_end'
[]
[]
(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'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 2
secondary_boundary = 3
primary_subdomain = 10000
secondary_subdomain = 10001
lm_variable_normal = frictionless_normal_lm
lm_variable_tangential_one = tangential_lm
secondary_variable = disp_x
disp_x = disp_x
disp_y = disp_y
[]
[]
[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
weighted_gap_uo = weighted_vel_uo
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_gap_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[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
weighted_velocities_uo = weighted_vel_uo
[]
[]
(modules/contact/test/tests/mortar_aux_kernels/block-dynamics-aux-fretting-wear-test.i)
starting_point = 0.5e-1
offset = -0.045
[GlobalParams]
displacements = 'disp_x disp_y'
[]
[Mesh]
file = long-bottom-block-1elem-blocks.e
[]
[Variables]
[disp_x]
block = '1 2'
[]
[disp_y]
block = '1 2'
[]
[normal_lm]
block = 3
use_dual = true
# scaling = 1.0e-5
[]
[frictional_lm]
block = 3
use_dual = true
scaling = 1.0e-5
[]
[]
[ICs]
[disp_y]
block = 2
variable = disp_y
value = '${fparse starting_point + offset}'
type = ConstantIC
[]
[]
[Kernels]
[DynamicTensorMechanics]
displacements = 'disp_x disp_y'
generate_output = 'stress_xx stress_yy'
strain = FINITE
block = '1 2'
stiffness_damping_coefficient = 0.04
hht_alpha = 0.0
[]
[inertia_x]
type = InertialForce
variable = disp_x
velocity = vel_x
acceleration = accel_x
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[inertia_y]
type = InertialForce
variable = disp_y
velocity = vel_y
acceleration = accel_y
beta = 0.25
gamma = 0.5
alpha = 0
eta = 0.0
block = '1 2'
[]
[]
[Materials]
[elasticity_2]
type = ComputeIsotropicElasticityTensor
block = '2'
youngs_modulus = 1e6
poissons_ratio = 0.3
[]
[elasticity_1]
type = ComputeIsotropicElasticityTensor
block = '1'
youngs_modulus = 1e8
poissons_ratio = 0.3
[]
[stress]
type = ComputeFiniteStrainElasticStress
block = '1 2'
[]
[strain]
type = ComputeFiniteStrain
block = '1 2'
[]
[density]
type = GenericConstantMaterial
block = '1 2'
prop_names = 'density'
prop_values = '7750'
[]
[]
[AuxVariables]
[worn_depth]
block = '3'
[]
[gap_vel]
block = '3'
[]
[vel_x]
block = '1 2'
[]
[accel_x]
block = '1 2'
[]
[vel_y]
block = '1 2'
[]
[accel_y]
block = '1 2'
[]
[vel_z]
block = '1 2'
[]
[accel_z]
block = '1 2'
[]
[]
[AuxKernels]
[gap_vel]
type = WeightedGapVelAux
variable = gap_vel
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
disp_x = disp_x
disp_y = disp_y
[]
[worn_depth]
type = MortarArchardsLawAux
variable = worn_depth
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
displacements = 'disp_x disp_y'
friction_coefficient = 0.5
energy_wear_coefficient = 1.0e-6
normal_pressure = normal_lm
execute_on = 'TIMESTEP_END'
[]
[accel_x]
type = NewmarkAccelAux
variable = accel_x
displacement = disp_x
velocity = vel_x
beta = 0.25
execute_on = 'linear timestep_end'
[]
[vel_x]
type = NewmarkVelAux
variable = vel_x
acceleration = accel_x
gamma = 0.5
execute_on = 'linear timestep_end'
[]
[accel_y]
type = NewmarkAccelAux
variable = accel_y
displacement = disp_y
velocity = vel_y
beta = 0.25
execute_on = 'linear timestep_end'
[]
[vel_y]
type = NewmarkVelAux
variable = vel_y
acceleration = accel_y
gamma = 0.5
execute_on = 'linear timestep_end'
[]
[]
[UserObjects]
[weighted_vel_uo]
type = LMWeightedVelocitiesUserObject
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
secondary_variable = disp_x
lm_variable_normal = normal_lm
lm_variable_tangential_one = frictional_lm
disp_x = disp_x
disp_y = disp_y
[]
[]
[Constraints]
[weighted_gap_lm]
type = ComputeDynamicFrictionalForceLMMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
disp_x = disp_x
disp_y = disp_y
use_displaced_mesh = true
wear_depth = worn_depth
c = 1e6
c_t = 1e6
normalize_c = true
mu = 0.5
friction_lm = frictional_lm
capture_tolerance = 1.0e-5
newmark_beta = 0.25
newmark_gamma = 0.5
[]
[normal_x]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_gap_uo = weighted_vel_uo
[]
[normal_y]
type = NormalMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = normal_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
weighted_gap_uo = weighted_vel_uo
[]
[tangential_x]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_x
component = x
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[tangential_y]
type = TangentialMortarMechanicalContact
primary_boundary = 20
secondary_boundary = 10
primary_subdomain = 4
secondary_subdomain = 3
variable = frictional_lm
secondary_variable = disp_y
component = y
use_displaced_mesh = true
compute_lm_residuals = false
weighted_velocities_uo = weighted_vel_uo
[]
[]
[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(4.0 * pi / 4 * t) + ${offset}'
[]
[leftx]
type = FunctionDirichletBC
variable = disp_x
boundary = 50
function = '1e-5 * (cos(32.0 * pi / 4 * t) - 1.0)'
[]
[]
[Executioner]
type = Transient
end_time = 0.5
dt = 0.05
dtmin = .002
solve_type = 'NEWTON'
petsc_options = '-snes_converged_reason -ksp_converged_reason -pc_svd_monitor '
'-snes_linesearch_monitor -snes_ksp_ew'
petsc_options_iname = '-pc_type -pc_factor_mat_solver_type -pc_factor_shift_type -pc_factor_shift_amount'
petsc_options_value = 'lu superlu_dist NONZERO 1e-15'
nl_max_its = 40
l_max_its = 15
line_search = none
snesmf_reuse_base = true
[TimeIntegrator]
type = NewmarkBeta
beta = 0.25
gamma = 0.5
[]
[]
[Debug]
show_var_residual_norms = true
[]
[Outputs]
exodus = true
[]
[Preconditioning]
[smp]
type = SMP
full = true
[]
[]
[Postprocessors]
active = 'contact'
[contact]
type = ContactDOFSetSize
variable = normal_lm
subdomain = '3'
execute_on = 'nonlinear timestep_end'
[]
[]