Generalized Plane Strain Reference Residual

Generalized Plane Strain Reference Residual Scalar Kernel

Description

The AuxScalarKernel GeneralizedPlaneStrainReferenceResidual retrieves and stores a reference residual value from GeneralizedPlaneStrainUserObject.

Example Input syntax

[AuxScalarKernels]
  [./gps_ref_res]
    type = GeneralizedPlaneStrainReferenceResidual
    variable = saved_zz
    generalized_plane_strain = gps_GeneralizedPlaneStrainUserObject
  [../]
[]

Input Parameters

generalized_plane_strainThe name of the GeneralizedPlaneStrainUserObject
C++ Type:UserObjectName
Unit:(no unit assumed)
Controllable:No
Description:The name of the GeneralizedPlaneStrainUserObject
variableThe name of the variable that this kernel operates on
C++ Type:AuxVariableName
Unit:(no unit assumed)
Controllable:No
Description:The name of the variable that this kernel operates on

Required Parameters

execute_onLINEARThe list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
Default:LINEAR
C++ Type:ExecFlagEnum
Unit:(no unit assumed)
Options:NONE, INITIAL, LINEAR, NONLINEAR_CONVERGENCE, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM
Controllable:No
Description:The list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
scalar_out_of_plane_strain_indexThe index number of scalar_out_of_plane_strain this kernel acts on
C++ Type:unsigned int
Unit:(no unit assumed)
Controllable:No
Description:The index number of scalar_out_of_plane_strain this kernel acts on

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Controllable:Yes
Description:Set the enabled status of the MooseObject.
use_displaced_meshFalseWhether 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:False
C++ Type:bool
Unit:(no unit assumed)
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

(moose/modules/combined/test/tests/generalized_plane_strain_tm_contact/out_of_plane_pressure.i)

# Tests for application of out-of-plane pressure in generalized plane strain.

[Mesh]
  type = GeneratedMesh
  nx = 2
  ny = 2
  dim = 2
  xmin = 0.0
  xmax = 1.0
  ymin = 0.0
  ymax = 1.0
  displacements = 'disp_x disp_y'
[]

[Problem]
  type = ReferenceResidualProblem
  extra_tag_vectors = 'ref'
  reference_vector = 'ref'
[]

[Variables]
  [./disp_x]
  [../]
  [./disp_y]
  [../]
  [./scalar_strain_zz]
    order = FIRST
    family = SCALAR
  [../]
[]

[AuxVariables]
  [./saved_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./saved_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./saved_zz]
    order = FIRST
    family = SCALAR
  [../]

  [./stress_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_xy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./stress_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]

  [./strain_xx]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_xy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_yy]
    order = CONSTANT
    family = MONOMIAL
  [../]
  [./strain_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
[]

[Postprocessors]
  [./react_z]
    type = MaterialTensorIntegral
    rank_two_tensor = stress
    index_i = 2
    index_j = 2
  [../]
[]

[Physics]
  [./SolidMechanics]
    [./GeneralizedPlaneStrain]
      [./gps]
        displacements = 'disp_x disp_y'
        scalar_out_of_plane_strain = scalar_strain_zz
        out_of_plane_pressure = traction_function
        factor = 1e5
      [../]
    [../]
  [../]
[]

[Kernels]
  [./TensorMechanics]
    use_displaced_mesh = true
    displacements = 'disp_x disp_y'
    save_in = 'saved_x saved_y'
    extra_vector_tags = 'ref'
  [../]
[]

[AuxScalarKernels]
  [./gps_ref_res]
    type = GeneralizedPlaneStrainReferenceResidual
    variable = saved_zz
    generalized_plane_strain = gps_GeneralizedPlaneStrainUserObject
  [../]
[]

[AuxKernels]
  [./stress_xx]
    type = RankTwoAux
    rank_two_tensor = stress
    variable = stress_xx
    index_i = 0
    index_j = 0
  [../]
  [./stress_xy]
    type = RankTwoAux
    rank_two_tensor = stress
    variable = stress_xy
    index_i = 0
    index_j = 1
  [../]
  [./stress_yy]
    type = RankTwoAux
    rank_two_tensor = stress
    variable = stress_yy
    index_i = 1
    index_j = 1
  [../]
  [./stress_zz]
    type = RankTwoAux
    rank_two_tensor = stress
    variable = stress_zz
    index_i = 2
    index_j = 2
  [../]

  [./strain_xx]
    type = RankTwoAux
    rank_two_tensor = total_strain
    variable = strain_xx
    index_i = 0
    index_j = 0
  [../]
  [./strain_xy]
    type = RankTwoAux
    rank_two_tensor = total_strain
    variable = strain_xy
    index_i = 0
    index_j = 1
  [../]
  [./strain_yy]
    type = RankTwoAux
    rank_two_tensor = total_strain
    variable = strain_yy
    index_i = 1
    index_j = 1
  [../]
  [./strain_zz]
    type = RankTwoAux
    rank_two_tensor = total_strain
    variable = strain_zz
    index_i = 2
    index_j = 2
  [../]
[]

[Functions]
  [./traction_function]
    type = PiecewiseLinear
    x = '0  2'
    y = '0  1'
  [../]
[]

[BCs]
  [./leftx]
    type = DirichletBC
    boundary = left
    variable = disp_x
    value = 0.0
  [../]
  [./bottomy]
    type = DirichletBC
    boundary = bottom
    variable = disp_y
    value = 0.0
  [../]
[]

[Materials]
  [./elastic_tensor]
    type = ComputeIsotropicElasticityTensor
    poissons_ratio = 0.3
    youngs_modulus = 1e6
  [../]
  [./strain]
    type = ComputePlaneSmallStrain
    displacements = 'disp_x disp_y'
    scalar_out_of_plane_strain = scalar_strain_zz
  [../]
  [./stress]
    type = ComputeLinearElasticStress
  [../]
[]

[Executioner]
  type = Transient

  solve_type = PJFNK
  line_search = none

# controls for linear iterations
  l_max_its = 100
  l_tol = 1e-4

# controls for nonlinear iterations
  nl_max_its = 15
  nl_rel_tol = 1e-14
  nl_abs_tol = 1e-11

# time control
  start_time = 0.0
  dt = 1.0
  dtmin = 1.0
  end_time = 2.0
  num_steps = 5000
[]

[Outputs]
  exodus = true
[]