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
[../]
(modules/tensor_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]
[../]
(modules/tensor_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

  • variableThe name of the variable that this object applies to

    C++ Type:AuxVariableName

    Options:

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

  • componentThe displacement component to consider for this kernel

    C++ Type:unsigned int

    Options:

    Description:The displacement component to consider for this kernel

  • global_strain_uoThe name of the GlobalStrainUserObject

    C++ Type:UserObjectName

    Options:

    Description:The name of the GlobalStrainUserObject

Required Parameters

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

    Default:0 0 0

    C++ Type:libMesh::Point

    Options:

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

  • output_global_displacementFalseOption to output global displacement only

    Default:False

    C++ Type:bool

    Options:

    Description:Option to output global displacement only

  • scalar_global_strainScalar variable providing global strain components

    C++ Type:std::vector

    Options:

    Description:Scalar variable providing global strain components

  • execute_onPRE_DISPLACEThe list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM, PRE_DISPLACE.

    Default:PRE_DISPLACE

    C++ Type:ExecFlagEnum

    Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM PRE_DISPLACE

    Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM, PRE_DISPLACE.

  • 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

  • displacementsThe name of the displacement variables

    C++ Type:std::vector

    Options:

    Description:The name of the displacement variables

  • 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

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.

  • 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

Input Files