LinearNodalConstraint

Constrains slave node to move as a linear combination of master nodes.

The LinearNodalConstraint class constrains the slave node to move as a linear combination of master nodes. Master node ids and corresponding weights are taken as input along with the slave node set or slave node ids. This nodal constraint can be enforced either using the penalty formulation or the kinematic formulation.

Input Parameters

  • penaltyThe penalty used for the boundary term

    C++ Type:double

    Options:

    Description:The penalty used for the boundary term

  • variableThe name of the variable that this constraint is applied to.

    C++ Type:NonlinearVariableName

    Options:

    Description:The name of the variable that this constraint is applied to.

  • masterThe master node IDs.

    C++ Type:std::vector

    Options:

    Description:The master node IDs.

  • weightsThe weights associated with the master node ids. Must be of the same size as master nodes

    C++ Type:std::vector

    Options:

    Description:The weights associated with the master node ids. Must be of the same size as master nodes

Required Parameters

  • 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.

  • slave_node_setNaNThe boundary ID associated with the slave side

    Default:NaN

    C++ Type:BoundaryName

    Options:

    Description:The boundary ID associated with the slave side

  • slave_node_idsThe list of slave node ids

    C++ Type:std::vector

    Options:

    Description:The list of slave node ids

  • formulationpenaltyFormulation used to calculate constraint - penalty or kinematic.

    Default:penalty

    C++ Type:MooseEnum

    Options:penalty kinematic

    Description:Formulation used to calculate constraint - penalty or kinematic.

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.

  • 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

References