Generalized Plane Strain Action System

Set up the GeneralizedPlaneStrain environment

Description

This action sets up a generalized plane strain model. A detailed description of generalized plane strain model can be found in the formulation page.

warning:For 2D and 1D Simulations

GeneralizedPlaneStrain only works for 1D axisymmetric or 2D generalized plane strain cases. For 1D axisymmetric and 2D generalized plane strain cases in the x-y plane the number of displacement variables must be one or two displacements, respectively.

For 2D generalized plane strain cases in the x-z or y-z planes the number of displacement variables must be three.

Constructed MooseObjects

The GeneralizedPlaneStrain Action is used to construct the kernels, user objects, and scalar out-of-plane variables in a consistent manner as required for a generalized plane strain simulation.

Table 1: Correspondence Among Action Functionality and MooseObjects for the GeneralizedPlaneStrain Action

Functionality	Replaced Classes	Associated Parameters
Scalar out-of-plan strain coupling with in-plane field variables	Generalized Plane Strain Off-diagonal Kernel	`scalar_out_of_plane_strain`: a list of the scalar variables for the out-of-plane strain direction
\|	`displacements` : a string of the displacement field (in-plane) variables
\|	`temperature`: a string of the temperature field variable
Out-of-plane scalar variable equilibrium condition	Generalized Plane Strain ScalarKernel	`scalar_out_of_plane_strain`: a list of the scalar variables for the out-of-plane strain direction
\|	`out_of_plane_direction`: the out-of-plane direction for the scalar out-of-plane strain
Residual and diagonal Jacobian calculation for scalar out-of-plane strain variables	Generalized Plane Strain UserObject	`scalar_out_of_plane_strain`: a list of the scalar variables for the out-of-plane strain direction

Example Input Syntax

Subblocks

The subblocks of the GeneralizedPlaneStrain action are what triggers MOOSE objects to be built. If a generalized plane strain model is applied for the whole simulation domain, a single subblock should be used

[./GeneralizedPlaneStrain]
  [./gps]
    use_displaced_mesh = true
    displacements = 'disp_x disp_y'
    scalar_out_of_plane_strain = scalar_strain_zz
    out_of_plane_pressure_function = traction_function
    pressure_factor = 1e5
  [../]
[../]

if different mesh subdomain has different generalized plane strain model, multiple subblocks with subdomain restrictions can be used.

[./GeneralizedPlaneStrain]
  [./gps1]
    use_displaced_mesh = true
    displacements = 'disp_x disp_y'
    scalar_out_of_plane_strain = scalar_strain_zz1
    block = '1'
  [../]
  [./gps2]
    use_displaced_mesh = true
    displacements = 'disp_x disp_y'
    scalar_out_of_plane_strain = scalar_strain_zz2
    block = '2'
  [../]
[../]

An example of using generalized plane strain action through the Tensor Mechanics master action with a different out_of_plane_direction than the default of $var element = document.getElementById("moose-equation-f8d3b96d-47d3-4d57-bfdc-2aadaa033c08");katex.render("z", element, {displayMode:false,throwOnError:false});$ is given by:

[./generalized_plane_strain]
  block = 1
  strain = SMALL
  scalar_out_of_plane_strain = scalar_strain_yy
  out_of_plane_direction = y
  planar_formulation = GENERALIZED_PLANE_STRAIN
  eigenstrain_names = 'eigenstrain'
  generate_output = 'stress_xx stress_xz stress_yy stress_zz strain_xx strain_xz strain_yy strain_zz'
[../]

Parameters supplied at the [Modules/TensorMechanics/GeneralizedPlaneStrain] level act as defaults for the Master action subblocks.

Input Parameters

displacementsThe displacement variables
C++ Type:std::vector<VariableName>
Options:
Description:The displacement variables
scalar_out_of_plane_strainScalar variable for the out-of-plane strain (in y direction for 1D Axisymmetric or in z direction for 2D Cartesian problems)
C++ Type:VariableName
Options:
Description:Scalar variable for the out-of-plane strain (in y direction for 1D Axisymmetric or in z direction for 2D Cartesian problems)

Required Parameters

active__all__ If specified only the blocks named will be visited and made active
Default:__all__
C++ Type:std::vector<std::string>
Options:
Description:If specified only the blocks named will be visited and made active
base_nameMaterial property base name
C++ Type:std::string
Options:
Description:Material property base name
blockThe list of ids of the blocks (subdomain) that the GeneralizedPlaneStrain kernels will be applied to
C++ Type:std::vector<SubdomainName>
Options:
Description:The list of ids of the blocks (subdomain) that the GeneralizedPlaneStrain kernels will be applied to
extra_vector_tagsThe tag names for extra vectors that residual data should be saved into
C++ Type:std::vector<TagName>
Options:
Description:The tag names for extra vectors that residual data should be saved into
inactiveIf specified blocks matching these identifiers will be skipped.
C++ Type:std::vector<std::string>
Options:
Description:If specified blocks matching these identifiers will be skipped.
out_of_plane_directionzThe direction of the out-of-plane strain.
Default:z
C++ Type:MooseEnum
Options:x, y, z
Description:The direction of the out-of-plane strain.
out_of_plane_pressure_functionFunction used to prescribe pressure (applied toward the body) in the out-of-plane direction (y for 1D Axisymmetric or z for 2D Cartesian problems)
C++ Type:FunctionName
Options:
Description:Function used to prescribe pressure (applied toward the body) in the out-of-plane direction (y for 1D Axisymmetric or z for 2D Cartesian problems)
out_of_plane_pressure_material0Material used to prescribe pressure (applied toward the body) in the out-of-plane direction
Default:0
C++ Type:MaterialPropertyName
Options:
Description:Material used to prescribe pressure (applied toward the body) in the out-of-plane direction
pressure_factorScale factor applied to prescribed out-of-plane pressure (both material and function)
C++ Type:double
Options:
Description:Scale factor applied to prescribed out-of-plane pressure (both material and function)
temperatureThe temperature variable
C++ Type:std::vector<VariableName>
Options:
Description:The temperature variable
use_displaced_meshFalseWhether to use displaced mesh
Default:False
C++ Type:bool
Options:
Description:Whether to use displaced mesh

Optional Parameters

Associated Actions

Available Actions

Tensor Mechanics App
GeneralizedPlaneStrainActionSet up the GeneralizedPlaneStrain environment

(moose/modules/tensor_mechanics/test/tests/generalized_plane_strain/out_of_plane_pressure.i)

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

[Mesh]
  [./square]
    type = GeneratedMeshGenerator
    dim = 2
    nx = 2
    ny = 2
  [../]
  displacements = 'disp_x disp_y'
[]

[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
  [../]

  [./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
  [../]
[]

[Modules]
  [./TensorMechanics]
    [./GeneralizedPlaneStrain]
      [./gps]
        use_displaced_mesh = true
        displacements = 'disp_x disp_y'
        scalar_out_of_plane_strain = scalar_strain_zz
        out_of_plane_pressure_function = traction_function
        pressure_factor = 1e5
      [../]
    [../]
  [../]
[]

[Kernels]
  [./TensorMechanics]
    use_displaced_mesh = false
    displacements = 'disp_x disp_y'
    save_in = 'saved_x saved_y'
  [../]
[]

[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 = 3
    variable = disp_x
    value = 0.0
  [../]
  [./bottomy]
    type = DirichletBC
    boundary = 0
    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
  [../]
  # This material is not used for anything in the base verison of this test,
  # but is used in a variant of the test with cli_args
  [./traction_material]
    type = GenericFunctionMaterial
    prop_names = traction_material
    prop_values = traction_function
  [../]
[]

[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
[]

(moose/modules/tensor_mechanics/test/tests/generalized_plane_strain/generalized_plane_strain_squares.i)

[Mesh]
  file = 2squares.e
  displacements = 'disp_x disp_y'
[]

[Variables]
  [./disp_x]
  [../]
  [./disp_y]
  [../]

  [./scalar_strain_zz1]
    order = FIRST
    family = SCALAR
  [../]
  [./scalar_strain_zz2]
    order = FIRST
    family = SCALAR
  [../]
[]

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

  [./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
  [../]
  [./aux_strain_zz]
    order = CONSTANT
    family = MONOMIAL
  [../]
[]

[Postprocessors]
  [./react_z1]
    type = MaterialTensorIntegral
    rank_two_tensor = stress
    index_i = 2
    index_j = 2
    block = 1
  [../]
  [./react_z2]
    type = MaterialTensorIntegral
    rank_two_tensor = stress
    index_i = 2
    index_j = 2
    block = 2
  [../]
[]

[Modules]
  [./TensorMechanics]
    [./GeneralizedPlaneStrain]
      [./gps1]
        use_displaced_mesh = true
        displacements = 'disp_x disp_y'
        scalar_out_of_plane_strain = scalar_strain_zz1
        block = '1'
      [../]
      [./gps2]
        use_displaced_mesh = true
        displacements = 'disp_x disp_y'
        scalar_out_of_plane_strain = scalar_strain_zz2
        block = '2'
      [../]
    [../]
  [../]
[]

[Kernels]
  [./TensorMechanics]
    use_displaced_mesh = false
    displacements = 'disp_x disp_y'
    temperature = temp
    save_in = 'saved_x saved_y'
    block = '1 2'
  [../]
[]

[AuxKernels]
  [./tempfuncaux]
    type = FunctionAux
    variable = temp
    function = tempfunc
    use_displaced_mesh = false
  [../]
  [./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
  [../]
  [./aux_strain_zz]
    type = RankTwoAux
    rank_two_tensor = total_strain
    variable = aux_strain_zz
    index_i = 2
    index_j = 2
  [../]
[]

[Functions]
  [./tempfunc]
    type = ParsedFunction
    value = '(1-x)*t'
  [../]
[]

[BCs]
  [./bottom1x]
    type = DirichletBC
    boundary = 1
    variable = disp_x
    value = 0.0
  [../]
  [./bottom1y]
    type = DirichletBC
    boundary = 1
    variable = disp_y
    value = 0.0
  [../]
  [./bottom2x]
    type = DirichletBC
    boundary = 2
    variable = disp_x
    value = 0.0
  [../]
  [./bottom2y]
    type = DirichletBC
    boundary = 2
    variable = disp_y
    value = 0.0
  [../]
[]

[Materials]
  [./elastic_tensor]
    type = ComputeIsotropicElasticityTensor
    poissons_ratio = 0.3
    youngs_modulus = 1e6
    block = '1 2'
  [../]
  [./strain1]
    type = ComputePlaneSmallStrain
    displacements = 'disp_x disp_y'
    scalar_out_of_plane_strain = scalar_strain_zz1
    block = 1
    eigenstrain_names = eigenstrain
  [../]
  [./strain2]
    type = ComputePlaneSmallStrain
    displacements = 'disp_x disp_y'
    scalar_out_of_plane_strain = scalar_strain_zz2
    block = 2
    eigenstrain_names = eigenstrain
  [../]
  [./thermal_strain]
    type = ComputeThermalExpansionEigenstrain
    temperature = temp
    thermal_expansion_coeff = 0.02
    stress_free_temperature = 0.5
    block = '1 2'
    eigenstrain_name = eigenstrain
  [../]
  [./stress]
    type = ComputeLinearElasticStress
    block = '1 2'
  [../]
[]

[Executioner]
  type = Transient

  solve_type = PJFNK
  line_search = none

# controls for linear iterations
  l_max_its = 100
  l_tol = 1e-10

# controls for nonlinear iterations
  nl_max_its = 15
  nl_rel_tol = 1e-12
  nl_abs_tol = 1e-10

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

[Outputs]
  exodus = true
[]

(moose/modules/tensor_mechanics/test/tests/2D_different_planes/gps_xz.i)

[GlobalParams]
  displacements = 'disp_x disp_y disp_z'
[]

[Mesh]
  file = square_xz_plane.e
[]

[Variables]
  [./disp_x]
  [../]
  [./disp_z]
  [../]
  [./scalar_strain_yy]
    order = FIRST
    family = SCALAR
  [../]
[]

[AuxVariables]
  [./temp]
  [../]
  [./disp_y]
  [../]
[]

[Modules/TensorMechanics/Master]
  [./generalized_plane_strain]
    block = 1
    strain = SMALL
    scalar_out_of_plane_strain = scalar_strain_yy
    out_of_plane_direction = y
    planar_formulation = GENERALIZED_PLANE_STRAIN
    eigenstrain_names = 'eigenstrain'
    generate_output = 'stress_xx stress_xz stress_yy stress_zz strain_xx strain_xz strain_yy strain_zz'
  [../]
[]

[AuxKernels]
  [./tempfuncaux]
    type = FunctionAux
    variable = temp
    function = tempfunc
  [../]
[]

[Functions]
  [./tempfunc]
    type = ParsedFunction
    value = '(1-x)*t'
  [../]
[]

[BCs]
  [./bottomx]
    type = DirichletBC
    boundary = 3
    variable = disp_x
    value = 0.0
  [../]
  [./bottomy]
    type = DirichletBC
    boundary = 3
    variable = disp_z
    value = 0.0
  [../]
[]

[Materials]
  [./elastic_stress]
    type = ComputeLinearElasticStress
    block = 1
  [../]
  [./thermal_strain]
    type = ComputeThermalExpansionEigenstrain
    temperature = temp
    thermal_expansion_coeff = 0.02
    stress_free_temperature = 0.5
    eigenstrain_name = eigenstrain
  [../]
  [./elasticity_tensor]
    type = ComputeIsotropicElasticityTensor
    block = 1
    poissons_ratio = 0.3
    youngs_modulus = 1e6
  [../]
[]

[Postprocessors]
  [./react_y]
    type = MaterialTensorIntegral
    use_displaced_mesh = false
    rank_two_tensor = stress
    index_i = 1
    index_j = 1
  [../]
[]

[Executioner]
  type = Transient

  solve_type = PJFNK
  line_search = none

# controls for linear iterations
  l_max_its = 100
  l_tol = 1e-10

# controls for nonlinear iterations
  nl_max_its = 10
  nl_rel_tol = 1e-12

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

[Outputs]
  file_base = gps_xz_small_out
  exodus = true
[]

Description
Constructed MooseObjects
Example Input Syntax
Input Parameters
Associated Actions
Available Actions