SolidMechanicsPlasticDruckerPrager

buildconstruction:Undocumented Class

The SolidMechanicsPlasticDruckerPrager has not been documented. The content listed below should be used as a starting point for documenting the class, which includes the typical automatic documentation associated with a MooseObject; however, what is contained is ultimately determined by what is necessary to make the documentation clear for users.

Non-associative Drucker Prager plasticity with no smoothing of the cone tip.

Overview

Example Input File Syntax

Input Parameters

  • internal_constraint_toleranceThe Newton-Raphson process is only deemed converged if the internal constraint is less than this.

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:The Newton-Raphson process is only deemed converged if the internal constraint is less than this.

  • mc_cohesionA SolidMechanicsHardening UserObject that defines hardening of the Mohr-Coulomb cohesion. Physically this should not be negative.

    C++ Type:UserObjectName

    Unit:(no unit assumed)

    Controllable:No

    Description:A SolidMechanicsHardening UserObject that defines hardening of the Mohr-Coulomb cohesion. Physically this should not be negative.

  • mc_dilation_angleA SolidMechanicsHardening UserObject that defines hardening of the Mohr-Coulomb dilation angle (in radians). Usually the dilation angle is not greater than the friction angle, and it is between 0 and Pi/2.

    C++ Type:UserObjectName

    Unit:(no unit assumed)

    Controllable:No

    Description:A SolidMechanicsHardening UserObject that defines hardening of the Mohr-Coulomb dilation angle (in radians). Usually the dilation angle is not greater than the friction angle, and it is between 0 and Pi/2.

  • mc_friction_angleA SolidMechanicsHardening UserObject that defines hardening of the Mohr-Coulomb friction angle (in radians). Physically this should be between 0 and Pi/2.

    C++ Type:UserObjectName

    Unit:(no unit assumed)

    Controllable:No

    Description:A SolidMechanicsHardening UserObject that defines hardening of the Mohr-Coulomb friction angle (in radians). Physically this should be between 0 and Pi/2.

  • yield_function_toleranceIf the yield function is less than this amount, the (stress, internal parameter) are deemed admissible.

    C++ Type:double

    Unit:(no unit assumed)

    Controllable:No

    Description:If the yield function is less than this amount, the (stress, internal parameter) are deemed admissible.

Required Parameters

  • execute_onTIMESTEP_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:TIMESTEP_END

    C++ Type:ExecFlagEnum

    Unit:(no unit assumed)

    Options:NONE, INITIAL, LINEAR, NONLINEAR_CONVERGENCE, NONLINEAR, POSTCHECK, TIMESTEP_END, TIMESTEP_BEGIN, MULTIAPP_FIXED_POINT_END, MULTIAPP_FIXED_POINT_BEGIN, FINAL, CUSTOM

    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.

  • mc_interpolation_schemelode_zeroScheme by which the Drucker-Prager cohesion, friction angle and dilation angle are set from the Mohr-Coulomb parameters mc_cohesion, mc_friction_angle and mc_dilation_angle. Consider the DP and MC yield surfaces on the deviatoric (octahedral) plane. Outer_tip: the DP circle touches the outer tips of the MC hex. Inner_tip: the DP circle touches the inner tips of the MC hex. Lode_zero: the DP circle intersects the MC hex at lode angle=0. Inner_edge: the DP circle is the largest circle that wholly fits inside the MC hex. Native: The DP cohesion, friction angle and dilation angle are set equal to the mc_ parameters entered.

    Default:lode_zero

    C++ Type:MooseEnum

    Unit:(no unit assumed)

    Options:outer_tip, inner_tip, lode_zero, inner_edge, native

    Controllable:No

    Description:Scheme by which the Drucker-Prager cohesion, friction angle and dilation angle are set from the Mohr-Coulomb parameters mc_cohesion, mc_friction_angle and mc_dilation_angle. Consider the DP and MC yield surfaces on the deviatoric (octahedral) plane. Outer_tip: the DP circle touches the outer tips of the MC hex. Inner_tip: the DP circle touches the inner tips of the MC hex. Lode_zero: the DP circle intersects the MC hex at lode angle=0. Inner_edge: the DP circle is the largest circle that wholly fits inside the MC hex. Native: The DP cohesion, friction angle and dilation angle are set equal to the mc_ parameters entered.

  • 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

  • allow_duplicate_execution_on_initialFalseIn the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:In the case where this UserObject is depended upon by an initial condition, allow it to be executed twice during the initial setup (once before the IC and again after mesh adaptivity (if applicable).

  • 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.

  • execution_order_group0Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.

    Default:0

    C++ Type:int

    Unit:(no unit assumed)

    Controllable:No

    Description:Execution order groups are executed in increasing order (e.g., the lowest number is executed first). Note that negative group numbers may be used to execute groups before the default (0) group. Please refer to the user object documentation for ordering of user object execution within a group.

  • force_postauxFalseForces the UserObject to be executed in POSTAUX

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Forces the UserObject to be executed in POSTAUX

  • force_preauxFalseForces the UserObject to be executed in PREAUX

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Forces the UserObject to be executed in PREAUX

  • force_preicFalseForces the UserObject to be executed in PREIC during initial setup

    Default:False

    C++ Type:bool

    Unit:(no unit assumed)

    Controllable:No

    Description:Forces the UserObject to be executed in PREIC during initial setup

  • 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.

Advanced Parameters