TotalLagrangianWeakPlaneStress

Plane stress kernel to provide out-of-plane strain contribution.

Description

The TotalLagrangianWeakPlaneStress kernel weakly enforces the out-of-plane stress to be zero.

Input Parameters

displacementsThe displacement components
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:The displacement components
variableThe name of the variable that this residual object operates on
C++ Type:NonlinearVariableName
Unit:(no unit assumed)
Controllable:No
Description:The name of the variable that this residual object operates on

Required Parameters

base_nameMaterial property base name
C++ Type:std::string
Controllable:No
Description:Material property base name
blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
compute_field_residualsTrueWhether to compute residuals for the field variable.
Default:True
C++ Type:bool
Controllable:No
Description:Whether to compute residuals for the field variable.
compute_scalar_residualsTrueWhether to compute scalar residuals
Default:True
C++ Type:bool
Controllable:No
Description:Whether to compute scalar residuals
large_kinematicsFalseUse large displacement kinematics
Default:False
C++ Type:bool
Controllable:No
Description:Use large displacement kinematics
matrix_onlyFalseWhether this object is only doing assembly to matrices (no vectors)
Default:False
C++ Type:bool
Controllable:No
Description:Whether this object is only doing assembly to matrices (no vectors)
scalar_variablePrimary coupled scalar variable
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Primary coupled scalar variable
stabilize_strainFalseAverage the volumetric strains
Default:False
C++ Type:bool
Controllable:No
Description:Average the volumetric strains

Optional Parameters

absolute_value_vector_tagsThe tags for the vectors this residual object should fill with the absolute value of the residual contribution
C++ Type:std::vector<TagName>
Controllable:No
Description:The tags for the vectors this residual object should fill with the absolute value of the residual contribution
extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the matrices this Kernel should fill
extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the vectors this Kernel should fill
matrix_tagssystemThe tag for the matrices this Kernel should fill
Default:system
C++ Type:MultiMooseEnum
Options:nontime, system
Controllable:No
Description:The tag for the matrices this Kernel should fill
vector_tagsnontimeThe tag for the vectors this Kernel should fill
Default:nontime
C++ Type:MultiMooseEnum
Options:nontime, time
Controllable:No
Description:The tag for the vectors this Kernel should fill

Contribution To Tagged Field Data 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.
diag_save_inThe name of auxiliary variables to save this Kernel's diagonal Jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
C++ Type:std::vector<AuxVariableName>
Unit:(no unit assumed)
Controllable:No
Description:The name of auxiliary variables to save this Kernel's diagonal Jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:Yes
Description:Set the enabled status of the MooseObject.
implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
save_inThe name of auxiliary variables to save this Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
C++ Type:std::vector<AuxVariableName>
Unit:(no unit assumed)
Controllable:No
Description:The name of auxiliary variables to save this Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)
search_methodnearest_node_connected_sidesChoice of search algorithm. All options begin by finding the nearest node in the primary boundary to a query point in the secondary boundary. In the default nearest_node_connected_sides algorithm, primary boundary elements are searched iff that nearest node is one of their nodes. This is fast to determine via a pregenerated node-to-elem map and is robust on conforming meshes. In the optional all_proximate_sides algorithm, primary boundary elements are searched iff they touch that nearest node, even if they are not topologically connected to it. This is more CPU-intensive but is necessary for robustness on any boundary surfaces which has disconnections (such as Flex IGA meshes) or non-conformity (such as hanging nodes in adaptively h-refined meshes).
Default:nearest_node_connected_sides
C++ Type:MooseEnum
Options:nearest_node_connected_sides, all_proximate_sides
Controllable:No
Description:Choice of search algorithm. All options begin by finding the nearest node in the primary boundary to a query point in the secondary boundary. In the default nearest_node_connected_sides algorithm, primary boundary elements are searched iff that nearest node is one of their nodes. This is fast to determine via a pregenerated node-to-elem map and is robust on conforming meshes. In the optional all_proximate_sides algorithm, primary boundary elements are searched iff they touch that nearest node, even if they are not topologically connected to it. This is more CPU-intensive but is necessary for robustness on any boundary surfaces which has disconnections (such as Flex IGA meshes) or non-conformity (such as hanging nodes in adaptively h-refined meshes).
seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Controllable:No
Description:The seed for the master random number generator

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/solid_mechanics/test/tests/lagrangian/cartesian/total/planar/weak_plane_stress/convergence.i)
(modules/solid_mechanics/test/tests/lagrangian/cartesian/total/planar/weak_plane_stress/pull_2D.i)

(modules/solid_mechanics/test/tests/lagrangian/cartesian/total/planar/weak_plane_stress/convergence.i)

[GlobalParams]
  displacements = 'disp_x disp_y'
  large_kinematics = true
  stabilize_strain = true
[]

[Mesh]
  [gmg]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 2
    ny = 2
  []
  use_displaced_mesh = false
[]

[Variables]
  [disp_x]
  []
  [disp_y]
  []
  [strain_zz]
  []
[]

[Kernels]
  [sdx]
    type = TotalLagrangianStressDivergence
    variable = disp_x
    out_of_plane_strain = strain_zz
    component = 0
  []
  [sdy]
    type = TotalLagrangianStressDivergence
    variable = disp_y
    out_of_plane_strain = strain_zz
    component = 1
  []
  [wps]
    type = TotalLagrangianWeakPlaneStress
    variable = strain_zz
  []
[]

[BCs]
  [fix_x]
    type = DirichletBC
    variable = disp_x
    boundary = 'top bottom'
    value = 0
  []
  [fix_y]
    type = DirichletBC
    variable = disp_y
    boundary = 'bottom'
    value = 0
  []
  [disp_y]
    type = FunctionDirichletBC
    variable = disp_y
    boundary = 'top'
    function = 't'
  []
[]

[Materials]
  [elastic_tensor]
    type = ComputeIsotropicElasticityTensor
    youngs_modulus = 1000.0
    poissons_ratio = 0.25
  []
  [strain]
    type = ComputeLagrangianWPSStrain
    out_of_plane_strain = strain_zz
  []
  [stress]
    type = ComputeLagrangianLinearElasticStress
  []
[]

[Executioner]
  type = Transient
  dt = 0.01
  end_time = 0.1

  solve_type = 'newton'
  petsc_options_iname = '-pc_type'
  petsc_options_value = 'lu'

  nl_abs_tol = 1e-10
  nl_rel_tol = 1e-10
[]

(modules/solid_mechanics/test/tests/lagrangian/cartesian/total/planar/weak_plane_stress/pull_2D.i)

[GlobalParams]
  displacements = 'disp_x disp_y'
  large_kinematics = true
  stabilize_strain = true
[]

[Mesh]
  [gmg]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 1
    ny = 1
  []
  use_displaced_mesh = false
[]

[Variables]
  [disp_x]
  []
  [disp_y]
  []
  [strain_zz]
  []
[]

[Kernels]
  [sdx]
    type = TotalLagrangianStressDivergence
    variable = disp_x
    out_of_plane_strain = strain_zz
    component = 0
  []
  [sdy]
    type = TotalLagrangianStressDivergence
    variable = disp_y
    out_of_plane_strain = strain_zz
    component = 1
    save_in = 'ry'
  []
  [wps]
    type = TotalLagrangianWeakPlaneStress
    variable = strain_zz
  []
[]

[AuxVariables]
  [ry]
  []
[]

[BCs]
  [left_x]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0
  []
  [bottom_y]
    type = DirichletBC
    variable = disp_y
    boundary = bottom
    value = 0
  []
  [disp_y]
    type = FunctionDirichletBC
    variable = disp_y
    boundary = top
    function = 't'
  []
[]

[Materials]
  [elastic_tensor]
    type = ComputeIsotropicElasticityTensor
    youngs_modulus = 1000.0
    poissons_ratio = 0.25
  []
  [strain]
    type = ComputeLagrangianWPSStrain
    out_of_plane_strain = strain_zz
  []
  [stress]
    type = ComputeLagrangianLinearElasticStress
  []
[]

[Executioner]
  type = Transient
  dt = 0.01
  end_time = 0.1

  solve_type = 'newton'
  petsc_options_iname = '-pc_type'
  petsc_options_value = 'lu'

  nl_abs_tol = 1e-10
  nl_rel_tol = 1e-10
[]

[Postprocessors]
  [Ry]
    type = NodalSum
    variable = ry
    boundary = top
    execute_on = 'INITIAL TIMESTEP_END'
  []
[]

[Outputs]
  csv = true
[]

Description
Input Parameters
Input Files