- stress_resultantThe stress resultant type to output, calculated on the shell element.
C++ Type:MooseEnum
Unit:(no unit assumed)
Controllable:No
Description:The stress resultant type to output, calculated on the shell element.
- thicknessThickness of the shell. Can be supplied as either a number or a variable name.
C++ Type:std::vector<VariableName>
Unit:(no unit assumed)
Controllable:No
Description:Thickness of the shell. Can be supplied as either a number or a variable name.
- through_thickness_orderQuadrature order in out of plane direction
C++ Type:std::string
Unit:(no unit assumed)
Controllable:No
Description:Quadrature order in out of plane direction
- variableThe name of the variable that this object applies to
C++ Type:AuxVariableName
Unit:(no unit assumed)
Controllable:No
Description:The name of the variable that this object applies to
ShellResultantsAux
Computes the local forces, bending moments and shear forces acting on shell elements
commentnote
The three Cartesian local vectors for each shell element are indexed as follows: the first vector is indexed by 0, the second vector by 1, and the normal vector by 2. The convention used to define the direction of these vectors is explained in ShellElements
The following stress resultants are computed using this auxiliary kernel:
axial_force_0: The in-plane axial force in the direction of the first local coordinate axis:
F_{0} = \int_{-t/2}^{t/2} \sigma_{00} dz
axial_force_1: The in-plane axial force in the direction of the second local coordinate axis:
F_{1} = \int_{-t/2}^{t/2} \sigma_{11} dz
normal_force: The normal force applied to the shell element in the thickness direction. This force is expected to be always zero due to the plane stress assumption used in the shell element formulation, which disregards out-of-plane stresses:
F_{N} = \int_{-t/2}^{t/2} \sigma_{22} dz
bending_moments_0: The bending moment about the first local coordinate axis:
M_{0} = \int_{-t/2}^{t/2} \sigma_{11} z dz
bending_moment_1: The bending moment about the second local coordinate axis:
M_{1} = \int_{-t/2}^{t/2} \sigma_{00} z dz
bending_moment_01: The in-plane bending moment:
M_{01} M_{10} \int_{-t/2}^{t/2} \sigma_{01} z dz
shear_force_01: The in-plane shear force:
Q_{01} Q_{10} \int_{-t/2}^{t/2} \sigma_{01} dz
shear_force_02: The transverse shear force:
Q_{02} Q_{20} \int_{-t/2}^{t/2} \sigma_{02} dz
shear_force_12: The transverse shear force:
Q_{12} Q_{21} \int_{-t/2}^{t/2} \sigma_{12} dz
Example Input Syntax
[AuxKernels]
[moment_22]
type = ShellResultantsAux
variable = moment_22
stress_resultant = bending_moment_1
thickness = 0.133887
through_thickness_order = SECOND
execute_on = TIMESTEP_END
[]
[]
Input Parameters
- base_nameMechanical property base name
C++ Type:std::string
Unit:(no unit assumed)
Controllable:No
Description:Mechanical property base name
- blockThe list of blocks (ids or names) that this object will be applied
C++ Type:std::vector<SubdomainName>
Unit:(no unit assumed)
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>
Unit:(no unit assumed)
Controllable:No
Description:The list of boundaries (ids or names) from the mesh where this object applies
- check_boundary_restrictedTrueWhether to check for multiple element sides on the boundary in the case of a boundary restricted, element aux variable. Setting this to false will allow contribution to a single element's elemental value(s) from multiple boundary sides on the same element (example: when the restricted boundary exists on two or more sides of an element, such as at a corner of a mesh
Default:True
C++ Type:bool
Unit:(no unit assumed)
Controllable:No
Description:Whether to check for multiple element sides on the boundary in the case of a boundary restricted, element aux variable. Setting this to false will allow contribution to a single element's elemental value(s) from multiple boundary sides on the same element (example: when the restricted boundary exists on two or more sides of an element, such as at a corner of a mesh
- execute_onLINEAR TIMESTEP_ENDThe list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
Default:LINEAR TIMESTEP_END
C++ Type:ExecFlagEnum
Unit:(no unit assumed)
Controllable:No
Description:The list of flag(s) indicating when this object should be executed. For a description of each flag, see https://mooseframework.inl.gov/source/interfaces/SetupInterface.html.
- 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
Unit:(no unit assumed)
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.
Optional Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Unit:(no unit assumed)
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
Unit:(no unit assumed)
Controllable:Yes
Description:Set the enabled status of the MooseObject.
- seed0The seed for the master random number generator
Default:0
C++ Type:unsigned int
Unit:(no unit assumed)
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
Unit:(no unit assumed)
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.