Generic Material Failure

Generic class for use in setting the failed material property.

Description

The GenericMaterialFailure model handles setting the failed material property when a variable reaches a user supplied criterion if a specific failure model is not available. There are 4 comparison modes between the variable and criterion:

  • Variable Criterion (greater_than)

  • Variable Criterion (greater_equal)

  • Variable Criterion (less_equal)

  • Variable Criterion (less_than)

A comparison of true means the material has failed. The criterion may either be a constant value or a function denoted by the function name. This model does not revert failed material if the comparison becomes false. Multiple GenericMaterialFailure blocks are allowed for multiple failure criteria comparisons, which allows ranged criteria to be implemented.

Example Input Syntax


[Materials]
  [./FailedSet]
    type = GenericMaterialFailure
    compared = greater_than
    constant_criteria = 0.5
    variable_check = u
  [../]
[]
(test/tests/generic_material_failure/failedset.i)

Input Parameters

  • comparedless_equalOptions for variable _compared_ to criteria: greater_than greater_equal less_equal less_than

    Default:less_equal

    C++ Type:MooseEnum

    Description:Options for variable _compared_ to criteria: greater_than greater_equal less_equal less_than

  • computeTrueWhen false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the Material via MaterialPropertyInterface::getMaterial(). Non-computed Materials are not sorted for dependencies.

    Default:True

    C++ Type:bool

    Description:When false, MOOSE will not call compute methods on this material. The user must call computeProperties() after retrieving the Material via MaterialPropertyInterface::getMaterial(). Non-computed Materials are not sorted for dependencies.

  • function_criteriaFunction name providing criteria value.

    C++ Type:FunctionName

    Description:Function name providing criteria value.

  • constant_criteria0Numerical value providing criteria value.

    Default:0

    C++ Type:double

    Description:Numerical value providing criteria value.

  • boundaryThe list of boundary IDs from the mesh where this boundary condition applies

    C++ Type:std::vector

    Description:The list of boundary IDs from the mesh where this boundary condition applies

  • variable_checkVariable name which is compared to criteria. Example: Var < 0, true=failed

    C++ Type:std::vector

    Description:Variable name which is compared to criteria. Example: Var < 0, true=failed

  • 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

Optional Parameters

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    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

    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

  • 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

  • constant_onNONEWhen ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped

    Default:NONE

    C++ Type:MooseEnum

    Description:When ELEMENT, MOOSE will only call computeQpProperties() for the 0th quadrature point, and then copy that value to the other qps.When SUBDOMAIN, MOOSE will only call computeSubdomainProperties() for the 0th quadrature point, and then copy that value to the other qps. Evaluations on element qps will be skipped

Advanced Parameters

  • output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)

    C++ Type:std::vector

    Description:List of material properties, from this material, to output (outputs must also be defined to an output type)

  • outputsnone Vector of output names were you would like to restrict the output of variables(s) associated with this object

    Default:none

    C++ Type:std::vector

    Description:Vector of output names were you would like to restrict the output of variables(s) associated with this object

Outputs Parameters

Input Files

Child Objects