- damage_modelsName of the damage models used to compute the damage index
C++ Type:std::vector
Description:Name of the damage models used to compute the damage index
Scalar Material Damage
Scalar damage model which is computed as a function of multiple scalar damage models
Description
CombinedScalarDamage is a model to define the effect of damage on the stress and stiffness in a continuum damage mechanics setting. It does not directly compute the stress, but must be used in conjunction with ComputeDamageStress.
This model is a scalar damage model in which the stress is computed as a function of the damage , the original stiffness of the material and the elastic strain :
The damage variable itself is computed as a combination of a series of external scalar damage models defined by the damage_models input parameters. Two combination types are possible: Maximum (default) and Product:
\begin{eqnarray} \mathrm{Maximum:} & d = & \mathrm{max}(d_1 ... d_N)
\mathrm{Product:} & d = & 1 - \Prod\limits_{i=1}^{N} (1 - d_i) \end{eqnarray}
Input Parameters
- base_nameOptional parameter that allows the user to define multiple mechanics material systems on the same block, i.e. for multiple phases
C++ Type:std::string
Description:Optional parameter that allows the user to define multiple mechanics material systems on the same block, i.e. for multiple phases
- 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
- 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
- combination_typeMaximumHow the damage models are combined
Default:Maximum
C++ Type:MooseEnum
Description:How the damage models are combined
- 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
- damage_index_namedamage_indexname of the material property where the damage index is stored
Default:damage_index
C++ Type:std::string
Description:name of the material property where the damage index is stored
- maximum_damage_increment0.1maximum damage increment allowed for simulations with adaptive time step
Default:0.1
C++ Type:double
Description:maximum damage increment allowed for simulations with adaptive time step
- residual_stiffness_fraction1e-08Minimum fraction of original material stiffness retained for fully damaged material (when damage_index=1)
Default:1e-08
C++ Type:double
Description:Minimum fraction of original material stiffness retained for fully damaged material (when damage_index=1)
- use_old_damageFalseWhether to use the damage index from the previous step in the stress computation
Default:False
C++ Type:bool
Description:Whether to use the damage index from the previous step in the stress computation
Optional Parameters
- 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.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
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
Description:Determines whether this object is calculated using an implicit or explicit form
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
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
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
- 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