TensorMechanicsPlasticDruckerPrager

under construction:Undocumented Class

The TensorMechanicsPlasticDruckerPrager has not been documented, if you would like to contribute to MOOSE by writing documentation, please see Documenting MOOSE. The content contained on this page explains the typical 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.

Input Parameters

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

    C++ Type:UserObjectName

    Options:

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

  • mc_dilation_angleA TensorMechanicsHardening 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

    Options:

    Description:A TensorMechanicsHardening 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.

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

    C++ Type:double

    Options:

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

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

    C++ Type:UserObjectName

    Options:

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

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

    C++ Type:double

    Options:

    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, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

    Default:TIMESTEP_END

    C++ Type:ExecFlagEnum

    Options:NONE INITIAL LINEAR NONLINEAR TIMESTEP_END TIMESTEP_BEGIN FINAL CUSTOM

    Description:The list of flag(s) indicating when this object should be executed, the available options include NONE, INITIAL, LINEAR, NONLINEAR, TIMESTEP_END, TIMESTEP_BEGIN, FINAL, CUSTOM.

  • 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 devatoric (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 wholey 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

    Options:outer_tip inner_tip lode_zero inner_edge native

    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 devatoric (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 wholey fits inside the MC hex. Native: The DP cohesion, friction angle and dilation angle are set equal to the mc_ parameters entered.

Optional Parameters

  • control_tagsAdds user-defined labels for accessing object parameters via control logic.

    C++ Type:std::vector

    Options:

    Description:Adds user-defined labels for accessing object parameters via control logic.

  • enableTrueSet the enabled status of the MooseObject.

    Default:True

    C++ Type:bool

    Options:

    Description:Set the enabled status of the MooseObject.

  • 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

    Options:

    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).

  • 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

    Options:

    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.

  • force_preauxFalseForces the GeneralUserObject to be executed in PREAUX

    Default:False

    C++ Type:bool

    Options:

    Description:Forces the GeneralUserObject to be executed in PREAUX

Advanced Parameters

Input Files

Child Objects

References