Generalized Plane Strain User Object

Generalized plane strain UserObject to provide residual and diagonal jacobian entries.

The GeneralizedPlaneStrainUserObject calculates the values of residual and diagonal jacobian components for each given scalar out-of-plane strain variable. This object is usually set up by the GeneralizedPlaneStrainAction.

For a given scalar out-of-plane strain variable, the equilibrium condition in the out-of-plane direction (e.g. -direction) is given as (1) where is an applied force or integrated stress. Thus, the residual corresponding to the scalar out-of-plane strain variable is (2) and the corresponding diagonal jacobian is (3)

The reference residual value used by GeneralizedPlaneStrainReferenceResidual is computed as (4)

This formulation is also used when the out-of-plane direction is the -direction or -direction with the subscripts in the preceding equations being changed from to or , respectively.

A detailed description of generalized plane strain model can be found in the formulation page.

Input Parameters

  • base_nameMaterial properties base name

    C++ Type:std::string

    Options:

    Description:Material properties base name

  • out_of_plane_pressure0Function used to prescribe pressure in the out-of-plane direction

    Default:0

    C++ Type:FunctionName

    Options:

    Description:Function used to prescribe pressure in the out-of-plane direction

  • 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.

  • factor1Scale factor applied to prescribed pressure

    Default:1

    C++ Type:double

    Options:

    Description:Scale factor applied to prescribed pressure

  • execute_onLINEARThe 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.

    Default:LINEAR

    C++ Type:ExecFlagEnum

    Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM

    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.

  • 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

  • subblock_index_providerSubblockIndexProvider user object name

    C++ Type:UserObjectName

    Options:

    Description:SubblockIndexProvider user object name

Optional Parameters

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Options:

    Description:Set the enabled status of the MooseObject.

  • allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

    Default:False

    C++ Type:bool

    Options:

    Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

  • 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.

  • 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.

  • seed0The seed for the master random number generator

    Default:0

    C++ Type:unsigned int

    Options:

    Description:The seed for the master random number generator

  • 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

Advanced Parameters