# CrackTipEnrichmentStressDivergenceTensors

The displacement field consists of the summation of the standard displacements and the near-tip enrichment (when near-tip enrichment is enabled). The CrackTipEnrichmentStressDivergenceTensors Kernel computes the contribution of the enrichment variables to the residual and Jacobian. This is only applicable for small-strain calculations.

Example Input Syntax

Enrich stress divergence kernel for small-strain simulations

Input Parameters

  • crack_front_definitionThe CrackFrontDefinition user object name

    C++ Type:UserObjectName

    Description:The CrackFrontDefinition user object name

  • enrichment_componentThe component of the enrichement functions

    C++ Type:unsigned int

    Description:The component of the enrichement functions

  • componentAn integer corresponding to the direction the variable this kernel acts in. (0 for x, 1 for y, 2 for z)

    C++ Type:unsigned int

    Description:An integer corresponding to the direction the variable this kernel acts in. (0 for x, 1 for y, 2 for z)

  • enrichment_displacementsThe string of enrichment displacements suitable for the problem statement

    C++ Type:std::vector

    Description:The string of enrichment displacements suitable for the problem statement

  • variableThe name of the variable that this Kernel operates on

    C++ Type:NonlinearVariableName

    Description:The name of the variable that this Kernel operates on

  • displacementsThe string of displacements suitable for the problem statement

    C++ Type:std::vector

    Description:The string of displacements suitable for the problem statement

Required Parameters

  • blockThe list of block ids (SubdomainID) that this object will be applied

    C++ Type:std::vector

    Description:The list of block ids (SubdomainID) that this object will be applied

  • base_nameMaterial property base name

    C++ Type:std::string

    Description:Material property base name

Optional Parameters

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Description:Set the enabled status of the MooseObject.

  • save_inThe name of auxiliary variables to save this Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

    C++ Type:std::vector

    Description:The name of auxiliary variables to save this Kernel's residual contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

  • 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

    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

    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

    Description:The seed for the master random number generator

  • diag_save_inThe name of auxiliary variables to save this Kernel's diagonal Jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

    C++ Type:std::vector

    Description:The name of auxiliary variables to save this Kernel's diagonal Jacobian contributions to. Everything about that variable must match everything about this variable (the type, what blocks it's on, etc.)

  • implicitTrueDetermines whether this object is calculated using an implicit or explicit form

    Default:True

    C++ Type:bool

    Description:Determines whether this object is calculated using an implicit or explicit form

Advanced Parameters

  • vector_tagsnontimeThe tag for the vectors this Kernel should fill

    Default:nontime

    C++ Type:MultiMooseEnum

    Description:The tag for the vectors this Kernel should fill

  • extra_vector_tagsThe extra tags for the vectors this Kernel should fill

    C++ Type:std::vector

    Description:The extra tags for the vectors this Kernel should fill

  • matrix_tagssystemThe tag for the matrices this Kernel should fill

    Default:system

    C++ Type:MultiMooseEnum

    Description:The tag for the matrices this Kernel should fill

  • extra_matrix_tagsThe extra tags for the matrices this Kernel should fill

    C++ Type:std::vector

    Description:The extra tags for the matrices this Kernel should fill

Tagging Parameters