- residual_youngs_modulus_fractionResidual fraction of youngs_modulus at full ASR reaction
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Residual fraction of youngs_modulus at full ASR reaction
Concrete ASR Microcracking Damage
Scalar damage model based on ASR extent
Description
The ConcreteASRMicrocrackingDamage
model computes a scalar damage index that increases with the extent of alkali-silica reaction (ASR) according to the model of Saouma and Perotti (2006): where is the damage induced by the ASR, is the residual fractional value of the elastic modulus when the concrete has fully reacted, is the time, is the temperature, and is the extent of ASR reaction, which goes from 0 (no reaction) to 1 (fully reacted). can be set using the residual_youngs_modulus_fraction
input parameter.
Implementation and Usage
This model only computes a scalar damage index, and relies on the ConcreteASREigenstrain model to compute the ASR reaction extent , which is stored in a property named ASR_extent
, so it must be used in conjunction with that model. In order for the damage to be applied, the stress needs to be computed using a ComputeDamageStress stress calculator.
Example Input Syntax
[Materials<<<{"href": "../../syntax/Materials/index.html"}>>>]
[ASR_damage_concrete]
type = ConcreteASRMicrocrackingDamage<<<{"description": "Scalar damage model based on ASR extent", "href": "ConcreteASRMicrocrackingDamage.html"}>>>
block<<<{"description": "The list of blocks (ids or names) that this object will be applied"}>>> = 1
residual_youngs_modulus_fraction<<<{"description": "Residual fraction of youngs_modulus at full ASR reaction"}>>> = 0.5
[]
[]
(blackbear/test/tests/concrete_ASR_swelling/asr_confined.i)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
Controllable:No
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 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
- boundaryThe list of boundaries (ids or names) from the mesh where this object applies
C++ Type:std::vector<BoundaryName>
Controllable:No
Description:The list of boundaries (ids or names) from the mesh where this object applies
- 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 computeQpProperties() 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
Controllable:No
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 computeQpProperties() 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:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:name of the material property where the damage index is stored
- declare_suffixAn optional suffix parameter that can be appended to any declared properties. The suffix will be prepended with a '_' character.
C++ Type:MaterialPropertyName
Unit:(no unit assumed)
Controllable:No
Description:An optional suffix parameter that can be appended to any declared properties. The suffix will be prepended with a '_' character.
- maximum_damage1Maximum value allowed for damage index
Default:1
C++ Type:double
Unit:(no unit assumed)
Controllable:No
Description:Maximum value allowed for damage index
- maximum_damage_increment0.1maximum damage increment allowed for simulations with adaptive time step
Default:0.1
C++ Type:double
Unit:(no unit assumed)
Controllable:No
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
Unit:(no unit assumed)
Controllable:No
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
Controllable:No
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<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- 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
- 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
- output_propertiesList of material properties, from this material, to output (outputs must also be defined to an output type)
C++ Type:std::vector<std::string>
Controllable:No
Description:List of material properties, from this material, to output (outputs must also be defined to an output type)
- outputsnone Vector of output names where you would like to restrict the output of variables(s) associated with this object
Default:none
C++ Type:std::vector<OutputName>
Controllable:No
Description:Vector of output names where you would like to restrict the output of variables(s) associated with this object
Outputs Parameters
- 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
Unit:(no unit assumed)
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.
- use_interpolated_stateFalseFor the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Default:False
C++ Type:bool
Controllable:No
Description:For the old and older state use projected material properties interpolated at the quadrature points. To set up projection use the ProjectedStatefulMaterialStorageAction.
Material Property Retrieval Parameters
References
- Victor Saouma and Luigi Perotti.
Constitutive model for alkali-aggregate reactions.
ACI Materials Journal, 2006.
doi:10.14359/15853.[BibTeX]