Compute Eigenstrain Beam From Variable

Computes an eigenstrain from a set of variables

Description

ComputeEigenstrainBeamFromVariable class takes in a set of 3 displacement or rotation variables or both and uses them to calculate the displacement and rotational beam eigenstrain in the global coordinate system. If either displacement or rotational aux variables are provided, they should be provided in all three global coordinate directions.

Example Input File Syntax

[./thermal]
  type = ComputeEigenstrainBeamFromVariable
  displacement_eigenstrain_variables = 'thermal_eig zero1 zero2'
  eigenstrain_name = thermal
[../]

/opt/civet/build_0/moose/modules/tensor_mechanics/test/tests/beam/eigenstrain/eigenstrain_from_var.i

# Test for eigenstrain from variables

# A constant axial eigenstrain of 0.01 is applied to a beam of length
# 4 m. The beam is fixed at one end. The eigenstrain causes a change in
# length of 0.04 m irrespective of the material properties of the beam.

[Mesh]
  type = GeneratedMesh
  dim = 1
  nx = 10
  xmin = 0.0
  xmax = 4.0
  displacements = 'disp_x disp_y disp_z'
[]

[Variables]
  [./disp_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_z]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_z]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[AuxVariables]
  [./thermal_eig]
  [../]
  [./zero1]
  [../]
  [./zero2]
  [../]
[]

[AuxKernels]
  [./thermal_eig]
    type = ConstantAux
    value = 0.01
    variable = thermal_eig
  [../]
[]

[BCs]
  [./fixx1]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0.0
  [../]
  [./fixy1]
    type = DirichletBC
    variable = disp_y
    boundary = left
    value = 0.0
  [../]
  [./fixz1]
    type = DirichletBC
    variable = disp_z
    boundary = left
    value = 0.0
  [../]
  [./fixr1]
    type = DirichletBC
    variable = rot_x
    boundary = left
    value = 0.0
  [../]
  [./fixr2]
    type = DirichletBC
    variable = rot_y
    boundary = left
    value = 0.0
  [../]
  [./fixr3]
    type = DirichletBC
    variable = rot_z
    boundary = left
    value = 0.0
  [../]
[]

[Preconditioning]
  [./smp]
    type = SMP
    full = true
  [../]
[]
[Executioner]
  type = Transient
  solve_type = NEWTON
  line_search = 'none'
  nl_max_its = 15
  nl_rel_tol = 1e-10
  nl_abs_tol = 1e-10

  dt = 1
  dtmin = 1
  end_time = 2
[]

[Kernels]
  [./solid_disp_x]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 0
    variable = disp_x
  [../]
  [./solid_disp_y]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 1
    variable = disp_y
  [../]
  [./solid_disp_z]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 2
    variable = disp_z
  [../]
  [./solid_rot_x]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 3
    variable = rot_x
  [../]
  [./solid_rot_y]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 4
    variable = rot_y
  [../]
  [./solid_rot_z]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 5
    variable = rot_z
  [../]
[]

[Materials]
  [./elasticity]
    type = ComputeElasticityBeam
    youngs_modulus = 1e6
    poissons_ratio = 0.3
    shear_coefficient = 1.0
    block = 0
  [../]
  [./strain]
    type = ComputeIncrementalBeamStrain
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    area = 0.5
    Ay = 0.0
    Az = 0.0
    Iy = 0.01
    Iz = 0.01
    y_orientation = '0.0 1.0 0.0'
    eigenstrain_names = 'thermal'
  [../]
  [./stress]
    type = ComputeBeamResultants
    block = 0
  [../]
  [./thermal]
    type = ComputeEigenstrainBeamFromVariable
    displacement_eigenstrain_variables = 'thermal_eig zero1 zero2'
    eigenstrain_name = thermal
  [../]
[]

[Postprocessors]
  [./disp_x]
    type = PointValue
    point = '4.0 0.0 0.0'
    variable = disp_x
  [../]
  [./disp_y]
    type = PointValue
    point = '4.0 0.0 0.0'
    variable = disp_y
  [../]
[]

[Outputs]
  [./out]
    type = Exodus
    hide = 'thermal_eig zero1 zero2'
  [../]
[]

Input Parameters

eigenstrain_nameMaterial property name for the eigenstrain vector computed by this model. IMPORTANT: The name of this property must also be provided to the strain calculator.
C++ Type:std::string
Options:
Description:Material property name for the eigenstrain vector computed by this model. IMPORTANT: The name of this property must also be provided to the strain calculator.

Required Parameters

blockThe list of block ids (SubdomainID) that this object will be applied
C++ Type:std::vector
Options:
Description:The list of block ids (SubdomainID) that this object will be applied
boundaryThe list of boundary IDs from the mesh where this boundary condition applies
C++ Type:std::vector
Options:
Description:The list of boundary IDs from the mesh where this boundary condition applies
computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
Default:True
C++ Type:bool
Options:
Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the MaterialBase via MaterialBasePropertyInterface::getMaterialBase(). Non-computed MaterialBases are not sorted for dependencies.
constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
Default:NONE
C++ Type:MooseEnum
Options:NONE ELEMENT SUBDOMAIN
Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped
displacement_eigenstrain_variablesA list of variable names describing the displacement eigenstrain. If provided, there must be 3 entries, corresponding to the axial and shear eigenstrains in the global coordinate system.
C++ Type:std::vector
Options:
Description:A list of variable names describing the displacement eigenstrain. If provided, there must be 3 entries, corresponding to the axial and shear eigenstrains in the global coordinate system.
rotational_eigenstrain_variablesA list of variable names describing the rotational eigenstrain. If provided, there must be 3 entries, corresponding to the rotational eigenstrain in the global coordinate system.
C++ Type:std::vector
Options:
Description:A list of variable names describing the rotational eigenstrain. If provided, there must be 3 entries, corresponding to the rotational eigenstrain in the global coordinate system.

Optional Parameters

control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector
Options:
Description:Adds user-defined labels for accessing object parameters via control logic.
enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Options:
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
Options:
Description:Determines whether this object is calculated using an implicit or explicit form
seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Options:
Description:The seed for the master random number generator
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
Options:
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

output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector
Options:
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
outputsnone Vector of output names were you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector
Options:
Description:Vector of output names were you would like to restrict the output of variables(s) associated with this object

Outputs Parameters

Input Files

modules/tensor_mechanics/test/tests/beam/eigenstrain/eigenstrain_from_var.i
modules/combined/test/tests/beam_eigenstrain_transfer/master_uo_transfer.i

modules/tensor_mechanics/test/tests/beam/eigenstrain/eigenstrain_from_var.i

# Test for eigenstrain from variables

# A constant axial eigenstrain of 0.01 is applied to a beam of length
# 4 m. The beam is fixed at one end. The eigenstrain causes a change in
# length of 0.04 m irrespective of the material properties of the beam.

[Mesh]
  type = GeneratedMesh
  dim = 1
  nx = 10
  xmin = 0.0
  xmax = 4.0
  displacements = 'disp_x disp_y disp_z'
[]

[Variables]
  [./disp_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./disp_z]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_z]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[AuxVariables]
  [./thermal_eig]
  [../]
  [./zero1]
  [../]
  [./zero2]
  [../]
[]

[AuxKernels]
  [./thermal_eig]
    type = ConstantAux
    value = 0.01
    variable = thermal_eig
  [../]
[]

[BCs]
  [./fixx1]
    type = DirichletBC
    variable = disp_x
    boundary = left
    value = 0.0
  [../]
  [./fixy1]
    type = DirichletBC
    variable = disp_y
    boundary = left
    value = 0.0
  [../]
  [./fixz1]
    type = DirichletBC
    variable = disp_z
    boundary = left
    value = 0.0
  [../]
  [./fixr1]
    type = DirichletBC
    variable = rot_x
    boundary = left
    value = 0.0
  [../]
  [./fixr2]
    type = DirichletBC
    variable = rot_y
    boundary = left
    value = 0.0
  [../]
  [./fixr3]
    type = DirichletBC
    variable = rot_z
    boundary = left
    value = 0.0
  [../]
[]

[Preconditioning]
  [./smp]
    type = SMP
    full = true
  [../]
[]
[Executioner]
  type = Transient
  solve_type = NEWTON
  line_search = 'none'
  nl_max_its = 15
  nl_rel_tol = 1e-10
  nl_abs_tol = 1e-10

  dt = 1
  dtmin = 1
  end_time = 2
[]

[Kernels]
  [./solid_disp_x]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 0
    variable = disp_x
  [../]
  [./solid_disp_y]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 1
    variable = disp_y
  [../]
  [./solid_disp_z]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 2
    variable = disp_z
  [../]
  [./solid_rot_x]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 3
    variable = rot_x
  [../]
  [./solid_rot_y]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 4
    variable = rot_y
  [../]
  [./solid_rot_z]
    type = StressDivergenceBeam
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 5
    variable = rot_z
  [../]
[]

[Materials]
  [./elasticity]
    type = ComputeElasticityBeam
    youngs_modulus = 1e6
    poissons_ratio = 0.3
    shear_coefficient = 1.0
    block = 0
  [../]
  [./strain]
    type = ComputeIncrementalBeamStrain
    block = '0'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    area = 0.5
    Ay = 0.0
    Az = 0.0
    Iy = 0.01
    Iz = 0.01
    y_orientation = '0.0 1.0 0.0'
    eigenstrain_names = 'thermal'
  [../]
  [./stress]
    type = ComputeBeamResultants
    block = 0
  [../]
  [./thermal]
    type = ComputeEigenstrainBeamFromVariable
    displacement_eigenstrain_variables = 'thermal_eig zero1 zero2'
    eigenstrain_name = thermal
  [../]
[]

[Postprocessors]
  [./disp_x]
    type = PointValue
    point = '4.0 0.0 0.0'
    variable = disp_x
  [../]
  [./disp_y]
    type = PointValue
    point = '4.0 0.0 0.0'
    variable = disp_y
  [../]
[]

[Outputs]
  [./out]
    type = Exodus
    hide = 'thermal_eig zero1 zero2'
  [../]
[]

modules/combined/test/tests/beam_eigenstrain_transfer/master_uo_transfer.i

# Test for multi app vector postprocessor to aux variable transfer

# Master App contains 2 beams, one starting at (1.5, 2.0, 2.0) and
# another starting at (2.5, 0.0, 3.0). Both beams extend for
# 0.150080 m along the y direction.

# Each subApp contains a 2D model of width 0.5 m and height 0.150080 m.
# A time varying temperature profile is assigned to each 2D model and
# the resulting yy strain along the right boundary (x = 0.5) is
# transferred to the beam model using the multi app transfer. The subApps
# are positioned in the [MultiApp] block such that the origin of the beams
# coincides with the origin of the subApp.

# For each master beam node/element, the MultiAppUserObjectTransfer finds
# the subApp where this node belongs, projects this node to the right
# boundary of the subApp and assigns the value corresponding to the
# projected point.

# Result: The y displacement of the beam should equal the y
# displacement along the right boundary of the 2D model.

[Mesh]
  type = FileMesh
  file = 2_beams_new.e
[]

[Variables]
  [./disp_x]
  [../]
  [./disp_y]
  [../]
  [./disp_z]
  [../]
  [./rot_x]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_y]
    order = FIRST
    family = LAGRANGE
  [../]
  [./rot_z]
    order = FIRST
    family = LAGRANGE
  [../]
[]

[BCs]
  [./fixx1]
    type = DirichletBC
    variable = disp_x
    boundary = 1
    value = 0.0
  [../]
  [./fixy1]
    type = DirichletBC
    variable = disp_y
    boundary = 1
    value = 0.0
  [../]
  [./fixz1]
    type = DirichletBC
    variable = disp_z
    boundary = 1
    value = 0.0
  [../]
  [./fixr1]
    type = DirichletBC
    variable = rot_x
    boundary = 1
    value = 0.0
  [../]
  [./fixr2]
    type = DirichletBC
    variable = rot_y
    boundary = 1
    value = 0.0
  [../]
  [./fixr3]
    type = DirichletBC
    variable = rot_z
    boundary = 1
    value = 0.0
  [../]
[]

[Kernels]
  [./solid_disp_x]
    type = StressDivergenceBeam
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 0
    variable = disp_x
  [../]
  [./solid_disp_y]
    type = StressDivergenceBeam
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 1
    variable = disp_y
  [../]
  [./solid_disp_z]
    type = StressDivergenceBeam
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 2
    variable = disp_z
  [../]
  [./solid_rot_x]
    type = StressDivergenceBeam
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 3
    variable = rot_x
  [../]
  [./solid_rot_y]
    type = StressDivergenceBeam
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 4
    variable = rot_y
  [../]
  [./solid_rot_z]
    type = StressDivergenceBeam
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    component = 5
    variable = rot_z
  [../]
[]

[Materials]
  [./elasticity]
    type = ComputeElasticityBeam
    youngs_modulus = 1e9
    poissons_ratio = 0.3
    shear_coefficient = 1.0
    block = 1
  [../]
  [./strain]
    type = ComputeIncrementalBeamStrain
    block = '1'
    displacements = 'disp_x disp_y disp_z'
    rotations = 'rot_x rot_y rot_z'
    area = 0.5
    Ay = 0.0
    Az = 0.0
    Iy = 0.01
    Iz = 0.01
    y_orientation = '0.0 0.0 1.0'
    eigenstrain_names = 'thermal'
  [../]
  [./stress]
    type = ComputeBeamResultants
    block = 1
  [../]
  [./thermal]
    type = ComputeEigenstrainBeamFromVariable
    displacement_eigenstrain_variables = 'zero1 to_var zero2'
    eigenstrain_name = thermal
  [../]
[]

[Executioner]
  type = Transient

  #Preconditioned JFNK (default)
  solve_type = 'PJFNK'

  line_search = 'none'

  l_max_its = 50
  nl_max_its = 50
  nl_rel_tol = 1e-12
  nl_abs_tol = 1e-12
  l_tol = 1e-9

  start_time = 0.0
  end_time = 0.075
  dt = 0.0125
  dtmin = 0.0001
[]

[AuxVariables]
  [./to_var]
  [../]
  [./zero1]
  [../]
  [./zero2]
  [../]
[]

[MultiApps]
  [./sub]
    type = TransientMultiApp
    app_type = CombinedApp
    positions = '1.5 2.0 2.0 2.5 0.0 3.0'
    input_files = 'subapp1_uo_transfer.i subapp2_uo_transfer.i'
  [../]
[]

[Transfers]
  [./fromsub]
    type = MultiAppUserObjectTransfer
    direction = from_multiapp
    user_object = axial_str
    multi_app = sub
    variable = to_var
    all_master_nodes_contained_in_sub_app = true
  [../]
[]

[Postprocessors]
  [./pos1]
    type = PointValue
    variable = disp_y
    point = '1.5 2.150080 2.0'
  [../]
  [./pos2]
    type = PointValue
    variable = disp_y
    point = '2.5 0.150080 3.0'
  [../]
[]

[Outputs]
  exodus = true
[]

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Input Parameters
Input Files

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