GlobalDisplacementAux

AuxKernel to visualize the displacements generated by the global strain tensor

Description

The AuxKernel GlobalDisplacementAux calculates the displacement components from the global strain tensor. Optionally, it can combine the global displacement with the displacements calculated from the stress divergence kernel to provide the total displacement. It saves individual displacement components into an AuxVariable for visualization and/or post-processing purposes.

Example Input File Syntax

[./disp_y]
  type = GlobalDisplacementAux
  variable = disp_y
  scalar_global_strain = global_strain
  global_strain_uo = global_strain_uo
  component = 1
[../]
(moose/modules/solid_mechanics/test/tests/global_strain/global_strain.i)

An AuxVariable is required to store the displacements calculated by the AuxKernel. The name of the AuxVariable is used as the argument for the variable input parameter.

[./disp_y]
[../]
(moose/modules/solid_mechanics/test/tests/global_strain/global_strain.i)

Visualization

In order to visualize the deformed shape with respect to the displacements calculated here, name the AuxVariables as disp_x, disp_y, disp_z and use some other names for the displacement variables.

Input Parameters

  • componentThe displacement component to consider for this kernel

    C++ Type:unsigned int

    Unit:(no unit assumed)

    Controllable:No

    Description:The displacement component to consider for this kernel

  • global_strain_uoThe name of the GlobalStrainUserObject

    C++ Type:UserObjectName

    Unit:(no unit assumed)

    Controllable:No

    Description:The name of the GlobalStrainUserObject

  • variableThe name of the variable that this object applies to

    C++ Type:AuxVariableName

    Unit:(no unit assumed)

    Controllable:No

    Description:The name of the variable that this object applies to

Required Parameters

  • blockThe list of blocks (ids or names) that this object will be applied

    C++ Type:std::vector<SubdomainName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The list of blocks (ids or names) that this object will be applied

  • boundaryThe list of boundaries (ids or names) from the mesh where this object applies

    C++ Type:std::vector<BoundaryName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The list of boundaries (ids or names) from the mesh where this object applies

  • check_boundary_restrictedTrueWhether to check for multiple element sides on the boundary in the case of a boundary restricted, element aux variable. Setting this to false will allow contribution to a single element's elemental value(s) from multiple boundary sides on the same element (example: when the restricted boundary exists on two or more sides of an element, such as at a corner of a mesh

    Default:True

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Whether to check for multiple element sides on the boundary in the case of a boundary restricted, element aux variable. Setting this to false will allow contribution to a single element's elemental value(s) from multiple boundary sides on the same element (example: when the restricted boundary exists on two or more sides of an element, such as at a corner of a mesh

  • displacementsThe name of the displacement variables

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:The name of the displacement variables

  • execute_onPRE_DISPLACEThe 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:PRE_DISPLACE

    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, PRE_DISPLACE

    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.

  • output_global_displacementFalseOption to output global displacement only

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Option to output global displacement only

  • 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.

  • reference_point0 0 0The coordinate of the center/fixed point of the simulation

    Default:0 0 0

    C++ Type:libMesh::Point

    Unit:(no unit assumed)

    Controllable:No

    Description:The coordinate of the center/fixed point of the simulation

  • scalar_global_strainScalar variable providing global strain components

    C++ Type:std::vector<VariableName>

    Unit:(no unit assumed)

    Controllable:No

    Description:Scalar variable providing global strain components

  • 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

    Unit:(no unit assumed)

    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.

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.

  • seed0The seed for the master random number generator

    Default:0

    C++ Type:unsigned int

    Unit:(no unit assumed)

    Controllable:No

    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

    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