- beta_penaltypenalty to penalize fracture on planes not normal to one cleavage plane normal which is normal to weak cleavage plane. Setting beta=0 results in isotropic damage.
C++ Type:double
Controllable:No
Description:penalty to penalize fracture on planes not normal to one cleavage plane normal which is normal to weak cleavage plane. Setting beta=0 results in isotropic damage.
- cleavage_plane_normalNormal to the weak cleavage plane
C++ Type:libMesh::VectorValue<double>
Controllable:No
Description:Normal to the weak cleavage plane
- variableThe name of the variable that this residual object operates on
C++ Type:NonlinearVariableName
Controllable:No
Description:The name of the variable that this residual object operates on
ACInterfaceCleavageFracture
Gradient energy Allen-Cahn Kernel where crack propagation along weakcleavage plane is preferred
Implements the Allen-Cahn term with crack propagation preferred along weak cleavage plane specified using cleavage plane normal (). Planes not normal to are penalized using parameter Clayton and Knap (2015). Setting results in isotropic damage with respect to cleavage planes. The added term is
Its weak form is
The second term in above expression can be simplified as,
In the last expression, the first and last term are zero and thus remains only middle term.
The Jacobian is
Input Parameters
- blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Controllable:No
Description:The list of blocks (ids or names) that this object will be applied
- coupled_variablesVector of nonlinear variable arguments this object depends on
C++ Type:std::vector<VariableName>
Controllable:No
Description:Vector of nonlinear variable arguments this object depends on
- displacementsThe displacements
C++ Type:std::vector<VariableName>
Controllable:No
Description:The displacements
- kappa_namekappa_opThe kappa used with the kernel
Default:kappa_op
C++ Type:MaterialPropertyName
Controllable:No
Description:The kappa used with the kernel
- mob_nameLThe mobility used with the kernel
Default:L
C++ Type:MaterialPropertyName
Controllable:No
Description:The mobility used with the kernel
- 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
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.
- variable_LTrueThe mobility is a function of any MOOSE variable (if this is set to false L must be constant over the entire domain!)
Default:True
C++ Type:bool
Controllable:No
Description:The mobility is a function of any MOOSE variable (if this is set to false L must be constant over the entire domain!)
Optional Parameters
- absolute_value_vector_tagsThe tags for the vectors this residual object should fill with the absolute value of the residual contribution
C++ Type:std::vector<TagName>
Controllable:No
Description:The tags for the vectors this residual object should fill with the absolute value of the residual contribution
- extra_matrix_tagsThe extra tags for the matrices this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
Description:The extra tags for the matrices this Kernel should fill
- extra_vector_tagsThe extra tags for the vectors this Kernel should fill
C++ Type:std::vector<TagName>
Controllable:No
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
Controllable:No
Description:The tag for the matrices this Kernel should fill
- vector_tagsnontimeThe tag for the vectors this Kernel should fill
Default:nontime
C++ Type:MultiMooseEnum
Controllable:No
Description:The tag for the vectors this Kernel should fill
Tagging Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- 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<AuxVariableName>
Controllable:No
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.)
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:Yes
Description:Set the enabled status of the MooseObject.
- implicitTrueDetermines whether this object is calculated using an implicit or explicit form
Default:True
C++ Type:bool
Controllable:No
Description:Determines whether this object is calculated using an implicit or explicit form
- 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<AuxVariableName>
Controllable:No
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.)
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
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
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
References
- J.D Clayton and J Knap.
Phase field modeling of directional fracture in anisotropic polycrystals.
Computational Materials Science, 98(C):158–169, 2015.[BibTeX]