This class uses the Discrete material in a radial return isotropic plasticity model. More...

#include <ADIsotropicPlasticityStressUpdate.h>

Inheritance diagram for ADIsotropicPlasticityStressUpdate< compute_stage >:

Public Member Functions
	ADIsotropicPlasticityStressUpdate (const InputParameters &parameters)

virtual void	updateState (ADRankTwoTensor &strain_increment, ADRankTwoTensor &inelastic_strain_increment, const ADRankTwoTensor &rotation_increment, ADRankTwoTensor &stress_new, const RankTwoTensor &stress_old, const ADRankFourTensor &elasticity_tensor, const RankTwoTensor &elastic_strain_old) override
	A radial return (J2) mapping method is performed with return mapping iterations. More...

virtual Real	computeReferenceResidual (const ADReal &effective_trial_stress, const ADReal &scalar_effective_inelastic_strain) override
	Compute a reference quantity to be used for checking relative convergence. More...

virtual ADReal	minimumPermissibleValue (const ADReal &) const override
	Compute the minimum permissible value of the scalar. More...

virtual ADReal	maximumPermissibleValue (const ADReal &effective_trial_stress) const override
	Compute the maximum permissible value of the scalar. More...

virtual Real	computeTimeStepLimit () override
	Compute the limiting value of the time step for this material. More...

bool	requiresIsotropicTensor () override
	Does the model require the elasticity tensor to be isotropic? More...

void	setQp (unsigned int qp)
	Sets the value of the global variable _qp for inheriting classes. More...


void	resetQpProperties () final
	Retained as empty methods to avoid a warning from Material.C in framework. These methods are unused in all inheriting classes and should not be overwritten. More...

void	resetProperties () final

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
virtual void	initQpStatefulProperties () override

virtual void	propagateQpStatefulProperties () override
	If updateState is not called during a timestep, this will be. More...

virtual void	computeStressInitialize (const ADReal &effective_trial_stress, const ADRankFourTensor &elasticity_tensor) override
	Perform any necessary initialization before return mapping iterations. More...

virtual ADReal	computeResidual (const ADReal &effective_trial_stress, const ADReal &scalar) override
	Compute the residual for a predicted value of the scalar. More...

virtual ADReal	computeDerivative (const ADReal &effective_trial_stress, const ADReal &scalar) override
	Compute the derivative of the residual as a function of the scalar variable. More...

virtual void	iterationFinalize (ADReal scalar) override
	Finalize internal state variables for a model for a given iteration. More...

virtual void	computeStressFinalize (const ADRankTwoTensor &plastic_strain_increment) override
	Perform any necessary steps to finalize state after return mapping iterations. More...

virtual void	computeYieldStress (const ADRankFourTensor &elasticity_tensor)

virtual ADReal	computeHardeningValue (const ADReal &scalar)

virtual ADReal	computeHardeningDerivative (const ADReal &scalar)

	ADMaterialProperty (RankTwoTensor) &_plastic_strain
	plastic strain in this model More...

	ADMaterialProperty (Real) &_hardening_variable

template<>
DualReal	computeHardeningValue (const DualReal &scalar)

template<>
void	computeYieldStress (const DualRankFourTensor &)

void	propagateQpStatefulPropertiesRadialReturn ()
	Propagate the properties pertaining to this intermediate class. More...

void	outputIterationSummary (std::stringstream *iter_output, const unsigned int total_it) override
	Output summary information for the convergence history of the model. More...

void	returnMappingSolve (const ADReal &effective_trial_stress, ADReal &scalar, const ConsoleStream &console)
	Perform the return mapping iterations. More...

virtual ADReal	initialGuess (const ADReal &)
	Compute an initial guess for the value of the scalar. More...

virtual void	outputIterationStep (std::stringstream *iter_output, const ADReal &effective_trial_stress, const ADReal &scalar, const Real reference_residual)
	Output information for a single iteration step to build the convergence history of the model. More...

bool	converged (const ADReal &residual, const Real reference)
	Check to see whether the residual is within the convergence limits. More...

Protected Attributes
const std::string	_plastic_prepend
	a string to prepend to the plastic strain Material Property name More...

const Function *	_yield_stress_function

ADReal	_yield_stress

const Real	_hardening_constant

const Function *	_hardening_function

ADReal	_yield_condition

ADReal	_hardening_slope

const MaterialProperty< RankTwoTensor > &	_plastic_strain_old
	old value of plastic strain More...

const MaterialProperty< Real > &	_hardening_variable_old

const ADVariableValue &	_temperature

	usingRadialReturnStressUpdateMembers

ADReal	_three_shear_modulus
	3 * shear modulus More...

const MaterialProperty< Real > &	_effective_inelastic_strain_old

Real	_max_inelastic_increment

const bool	_apply_strain

	usingStressUpdateBaseMembers

	usingSingleVariableReturnMappingSolutionMembers

const std::string	_base_name
	Name used as a prefix for all material properties related to the stress update model. More...

	usingMaterialMembers

bool	_check_range
	Whether to check to see whether iterative solution is within admissible range, and set within that range if outside. More...

bool	_line_search
	Whether to use line searches to improve convergence. More...

bool	_bracket_solution
	Whether to save upper and lower bounds of root for scalar, and set solution to the midpoint between those bounds if outside them. More...

Private Types
enum	InternalSolveOutput { InternalSolveOutput::NEVER, InternalSolveOutput::ON_ERROR, InternalSolveOutput::ALWAYS }

enum	SolveState { SolveState::SUCCESS, SolveState::NAN_INF, SolveState::EXCEEDED_ITERATIONS }

Private Member Functions
SolveState	internalSolve (const ADReal effective_trial_stress, ADReal &scalar, std::stringstream *iter_output=nullptr)
	Method called from within this class to perform the actual return mappping iterations. More...

bool	convergedAcceptable (const unsigned int it, const Real reference)
	Check to see whether the residual is within acceptable convergence limits. More...

void	checkPermissibleRange (ADReal &scalar, ADReal &scalar_increment, const ADReal &scalar_old, const ADReal min_permissible_scalar, const ADReal max_permissible_scalar, std::stringstream *iter_output)
	Check to see whether solution is within admissible range, and set it within that range if it is not. More...

void	updateBounds (const ADReal &scalar, const ADReal &residual, const Real init_resid_sign, ADReal &scalar_upper_bound, ADReal &scalar_lower_bound, std::stringstream *iter_output)
	Update the upper and lower bounds of the root for the effective inelastic strain. More...

Private Attributes
enum ADSingleVariableReturnMappingSolution::InternalSolveOutput	_internal_solve_output_on

const unsigned int	_max_its
	Maximum number of return mapping iterations. More...

const bool	_internal_solve_full_iteration_history
	Whether to output iteration information all the time (regardless of whether iterations converge) More...

Real	_relative_tolerance
	Relative convergence tolerance. More...

Real	_absolute_tolerance
	Absolute convergence tolerance. More...

Real	_acceptable_multiplier
	Multiplier applied to relative and absolute tolerances for acceptable convergence. More...

const std::size_t	_num_resids
	Number of residuals to be stored in history. More...

std::vector< Real >	_residual_history
	History of residuals used to check whether progress is still being made on decreasing the residual. More...

unsigned int	_iteration
	iteration number More...

const std::string	_svrms_name
	MOOSE input name of the object performing the solve. More...


ADReal	_initial_residual
	Residual values, kept as members to retain solver state for summary outputting. More...

ADReal	_residual

Detailed Description

template<ComputeStage compute_stage>
class ADIsotropicPlasticityStressUpdate< compute_stage >

This class uses the Discrete material in a radial return isotropic plasticity model.

This class is one of the basic radial return constitutive models; more complex constitutive models combine creep and plasticity.

This class inherits from RadialReturnStressUpdate and must be used in conjunction with ComputeReturnMappingStress. This class calculates an effective trial stress, an effective scalar plastic strain increment, and the derivative of the scalar effective plastic strain increment; these values are passed to the RadialReturnStressUpdate to compute the radial return stress increment. This isotropic plasticity class also computes the plastic strain as a stateful material property.

This class is based on the implicit integration algorithm in F. Dunne and N. Petrinic's Introduction to Computational Plasticity (2004) Oxford University Press, pg. 146 - 149.

Definition at line 27 of file ADIsotropicPlasticityStressUpdate.h.

Member Enumeration Documentation

◆ InternalSolveOutput

template<ComputeStage compute_stage>

enum ADSingleVariableReturnMappingSolution::InternalSolveOutput

strongprivateinherited

Enumerator
NEVER
ON_ERROR
ALWAYS

Definition at line 156 of file ADSingleVariableReturnMappingSolution.h.

   {
     NEVER,
     ON_ERROR,
     ALWAYS
   } _internal_solve_output_on;

◆ SolveState

template<ComputeStage compute_stage>

enum ADSingleVariableReturnMappingSolution::SolveState

strongprivateinherited

Enumerator
SUCCESS
NAN_INF
EXCEEDED_ITERATIONS

Definition at line 163 of file ADSingleVariableReturnMappingSolution.h.

   {
     SUCCESS,
     NAN_INF,
     EXCEEDED_ITERATIONS
   };

Constructor & Destructor Documentation

◆ ADIsotropicPlasticityStressUpdate()

template<ComputeStage compute_stage>

ADIsotropicPlasticityStressUpdate< compute_stage >::ADIsotropicPlasticityStressUpdate ( const InputParameters & parameters )

Definition at line 47 of file ADIsotropicPlasticityStressUpdate.C.

   : ADRadialReturnStressUpdate<compute_stage>(parameters),
     _plastic_prepend(getParam<std::string>("plastic_prepend")),
     _yield_stress_function(
         isParamValid("yield_stress_function") ? &getFunction("yield_stress_function") : NULL),
     _yield_stress(getParam<Real>("yield_stress")),
     _hardening_constant(getParam<Real>("hardening_constant")),
     _hardening_function(isParamValid("hardening_function") ? &getFunction("hardening_function")
                                                            : NULL),
     _yield_condition(-1.0), // set to a non-physical value to catch uninitalized yield condition
     _hardening_slope(0.0),
     _plastic_strain(
         declareADProperty<RankTwoTensor>(_base_name + _plastic_prepend + "plastic_strain")),
     _plastic_strain_old(
         getMaterialPropertyOld<RankTwoTensor>(_base_name + _plastic_prepend + "plastic_strain")),
     _hardening_variable(declareADProperty<Real>(_base_name + "hardening_variable")),
     _hardening_variable_old(getMaterialPropertyOld<Real>(_base_name + "hardening_variable")),
     _temperature(adCoupledValue("temperature"))
 {
   if (parameters.isParamSetByUser("yield_stress") && _yield_stress <= 0.0)
     mooseError("Yield stress must be greater than zero");
  
   if (_yield_stress_function == NULL && !parameters.isParamSetByUser("yield_stress"))
     mooseError("Either yield_stress or yield_stress_function must be given");
  
   if (!parameters.isParamSetByUser("hardening_constant") && !isParamValid("hardening_function"))
     mooseError("Either hardening_constant or hardening_function must be defined");
  
   if (parameters.isParamSetByUser("hardening_constant") && isParamValid("hardening_function"))
     mooseError(
         "Only the hardening_constant or only the hardening_function can be defined but not both");
 }

Member Function Documentation

◆ ADMaterialProperty() [1/2]

template<ComputeStage compute_stage>

ADIsotropicPlasticityStressUpdate< compute_stage >::ADMaterialProperty ( RankTwoTensor ) &

protected

plastic strain in this model

◆ ADMaterialProperty() [2/2]

template<ComputeStage compute_stage>

ADIsotropicPlasticityStressUpdate< compute_stage >::ADMaterialProperty ( Real ) &

protected

◆ checkPermissibleRange()

template<ComputeStage compute_stage>

void ADSingleVariableReturnMappingSolution< compute_stage >::checkPermissibleRange	(	ADReal &	scalar,
		ADReal &	scalar_increment,
		const ADReal &	scalar_old,
		const ADReal	min_permissible_scalar,
		const ADReal	max_permissible_scalar,
		std::stringstream *	iter_output
	)

privateinherited

Check to see whether solution is within admissible range, and set it within that range if it is not.

Parameters

scalar	Current value of the inelastic strain increment
scalar_increment	Incremental change in scalar from the previous iteration
scalar_old	Previous value of scalar
min_permissible_scalar	Minimum permissible value of scalar
max_permissible_scalar	Maximum permissible value of scalar
iter_output	Output stream

Definition at line 334 of file ADSingleVariableReturnMappingSolution.C.

 {
   if (scalar > max_permissible_scalar)
   {
     scalar_increment = (max_permissible_scalar - scalar_old) / 2.0;
     scalar = scalar_old + scalar_increment;
     if (iter_output)
       *iter_output << "Scalar greater than maximum ("
                    << MetaPhysicL::raw_value(max_permissible_scalar)
                    << ") adjusted scalar=" << MetaPhysicL::raw_value(scalar)
                    << " scalar_increment=" << MetaPhysicL::raw_value(scalar_increment) << std::endl;
   }
   else if (scalar < min_permissible_scalar)
   {
     scalar_increment = (min_permissible_scalar - scalar_old) / 2.0;
     scalar = scalar_old + scalar_increment;
     if (iter_output)
       *iter_output << "Scalar less than minimum (" << MetaPhysicL::raw_value(min_permissible_scalar)
                    << ") adjusted scalar=" << MetaPhysicL::raw_value(scalar)
                    << " scalar_increment=" << MetaPhysicL::raw_value(scalar_increment) << std::endl;
   }
 }

◆ computeDerivative()

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::computeDerivative	(	const ADReal &	effective_trial_stress,
		const ADReal &	scalar
	)

overrideprotectedvirtual

Compute the derivative of the residual as a function of the scalar variable.

The residual should be in strain increment units for all models for consistency.

Parameters

effective_trial_stress	Effective trial stress
scalar	Inelastic strain increment magnitude being solved for

Implements ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 135 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_yield_condition > 0.0)
     return -1.0 - _hardening_slope / _three_shear_modulus;
  
   return 1.0;
 }

◆ computeHardeningDerivative()

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::computeHardeningDerivative ( const ADReal & scalar )

protectedvirtual

Definition at line 198 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_hardening_function)
   {
     const Real strain_old = _effective_inelastic_strain_old[_qp];
     const Point p; // Always (0,0,0)
  
     return _hardening_function->timeDerivative(strain_old, p);
   }
  
   return _hardening_constant;
 }

◆ computeHardeningValue() [1/2]

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::computeHardeningValue ( const ADReal & scalar )

protectedvirtual

Definition at line 162 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_hardening_function)
   {
     const Real strain_old = _effective_inelastic_strain_old[_qp];
     const Point p;
     const Real t = strain_old + MetaPhysicL::raw_value(scalar);
  
     return _hardening_function->value(t, p) - _yield_stress;
   }
  
   return _hardening_variable_old[_qp] + _hardening_slope * scalar;
 }

◆ computeHardeningValue() [2/2]

template<>

DualReal ADIsotropicPlasticityStressUpdate< JACOBIAN >::computeHardeningValue ( const DualReal & scalar )

protected

Definition at line 178 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_hardening_function)
   {
     const Real strain_old = _effective_inelastic_strain_old[_qp];
     const Point p;
     const Real t = strain_old + MetaPhysicL::raw_value(scalar);
  
     DualReal hardening_function_value = _hardening_function->value(t, p);
     hardening_function_value.derivatives() =
         (strain_old + scalar).derivatives() * _hardening_function->timeDerivative(t, p);
  
     return hardening_function_value - _yield_stress;
   }
  
   return _hardening_variable_old[_qp] + _hardening_slope * scalar;
 }

◆ computeReferenceResidual()

template<ComputeStage compute_stage>

Real ADRadialReturnStressUpdate< compute_stage >::computeReferenceResidual	(	const ADReal &	effective_trial_stress,
		const ADReal &	scalar
	)

overridevirtualinherited

Compute a reference quantity to be used for checking relative convergence.

This should be in strain increment units for all models for consistency.

Parameters

effective_trial_stress	Effective trial stress
scalar	Inelastic strain increment magnitude being solved for

Implements ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 124 of file ADRadialReturnStressUpdate.C.

 {
   return MetaPhysicL::raw_value(effective_trial_stress / _three_shear_modulus) -
          MetaPhysicL::raw_value(scalar_effective_inelastic_strain);
 }

◆ computeResidual()

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::computeResidual	(	const ADReal &	effective_trial_stress,
		const ADReal &	scalar
	)

overrideprotectedvirtual

Compute the residual for a predicted value of the scalar.

This residual should be in strain increment units for all models for consistency.

Parameters

effective_trial_stress	Effective trial stress
scalar	Inelastic strain increment magnitude being solved for

Implements ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 113 of file ADIsotropicPlasticityStressUpdate.C.

 {
   ADReal residual = 0.0;
  
   mooseAssert(_yield_condition != -1.0,
               "the yield stress was not updated by computeStressInitialize");
  
   if (_yield_condition > 0.0)
   {
     _hardening_slope = computeHardeningDerivative(scalar);
     _hardening_variable[_qp] = computeHardeningValue(scalar);
  
     residual =
         (effective_trial_stress - _hardening_variable[_qp] - _yield_stress) / _three_shear_modulus -
         scalar;
   }
   return residual;
 }

◆ computeStressFinalize()

template<ComputeStage compute_stage>

void ADIsotropicPlasticityStressUpdate< compute_stage >::computeStressFinalize ( const ADRankTwoTensor & )

overrideprotectedvirtual

Perform any necessary steps to finalize state after return mapping iterations.

Parameters

inelasticStrainIncrement Inelastic strain increment

Reimplemented from ADRadialReturnStressUpdate< compute_stage >.

Definition at line 154 of file ADIsotropicPlasticityStressUpdate.C.

 {
   _plastic_strain[_qp] += plastic_strain_increment;
 }

◆ computeStressInitialize()

template<ComputeStage compute_stage>

void ADIsotropicPlasticityStressUpdate< compute_stage >::computeStressInitialize	(	const ADReal &	,
		const ADRankFourTensor &
	)

overrideprotectedvirtual

Perform any necessary initialization before return mapping iterations.

Parameters

effective_trial_stress	Effective trial stress
elasticityTensor	Elasticity tensor

Reimplemented from ADRadialReturnStressUpdate< compute_stage >.

Definition at line 101 of file ADIsotropicPlasticityStressUpdate.C.

 {
   computeYieldStress(elasticity_tensor);
  
   _yield_condition = effective_trial_stress - _hardening_variable_old[_qp] - _yield_stress;
   _hardening_variable[_qp] = _hardening_variable_old[_qp];
   _plastic_strain[_qp] = _plastic_strain_old[_qp];
 }

◆ computeTimeStepLimit()

template<ComputeStage compute_stage>

Real ADRadialReturnStressUpdate< compute_stage >::computeTimeStepLimit ( )

overridevirtualinherited

Compute the limiting value of the time step for this material.

Returns: Limiting time step

Reimplemented from ADStressUpdateBase< compute_stage >.

Reimplemented in ADLAROMANCEStressUpdateBase< compute_stage >.

Definition at line 141 of file ADRadialReturnStressUpdate.C.

 {
   Real scalar_inelastic_strain_incr = MetaPhysicL::raw_value(_effective_inelastic_strain[_qp]) -
                                       _effective_inelastic_strain_old[_qp];
   if (MooseUtils::absoluteFuzzyEqual(scalar_inelastic_strain_incr, 0.0))
     return std::numeric_limits<Real>::max();
  
   return _dt * _max_inelastic_increment / scalar_inelastic_strain_incr;
 }

Referenced by ADLAROMANCEStressUpdateBase< compute_stage >::computeTimeStepLimit().

◆ computeYieldStress() [1/2]

template<ComputeStage compute_stage>

void ADIsotropicPlasticityStressUpdate< compute_stage >::computeYieldStress ( const ADRankFourTensor & elasticity_tensor )

protectedvirtual

Definition at line 214 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_yield_stress_function)
   {
     const Point p;
     _yield_stress = _yield_stress_function->value(MetaPhysicL::raw_value(_temperature[_qp]), p);
     if (_yield_stress <= 0.0)
       mooseException(
           "In ", _name, ": The calculated yield stress (", _yield_stress, ") is less than zero");
   }
 }

◆ computeYieldStress() [2/2]

template<>

void ADIsotropicPlasticityStressUpdate< JACOBIAN >::computeYieldStress ( const DualRankFourTensor & )

protected

Definition at line 229 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_yield_stress_function)
   {
     const Point p;
  
     _yield_stress = _yield_stress_function->value(MetaPhysicL::raw_value(_temperature[_qp]), p);
     _yield_stress.derivatives() =
         _temperature[_qp].derivatives() *
         _yield_stress_function->timeDerivative(MetaPhysicL::raw_value(_temperature[_qp]), p);
  
     if (_yield_stress <= 0.0)
       mooseException("In ",
                      _name,
                      ": The calculated yield stress (",
                      _yield_stress.value(),
                      ") is less than zero");
   }
 }

◆ converged()

template<ComputeStage compute_stage>

bool ADSingleVariableReturnMappingSolution< compute_stage >::converged	(	const ADReal &	residual,
		const Real	reference
	)

protectedinherited

Check to see whether the residual is within the convergence limits.

Parameters

residual	Current value of the residual
reference	Current value of the reference quantity

Returns: Whether the model converged

Definition at line 301 of file ADSingleVariableReturnMappingSolution.C.

 {
   const Real residual = MetaPhysicL::raw_value(ad_residual);
   return (std::abs(residual) <= _absolute_tolerance ||
           std::abs(residual / reference) <= _relative_tolerance);
 }

◆ convergedAcceptable()

template<ComputeStage compute_stage>

bool ADSingleVariableReturnMappingSolution< compute_stage >::convergedAcceptable	(	const unsigned int	it,
		const Real	reference
	)

privateinherited

Check to see whether the residual is within acceptable convergence limits.

This will only return true if it has been determined that progress is no longer being made and that the residual is within the acceptable limits.

Parameters

residual	Current iteration count
residual	Current value of the residual
reference	Current value of the reference quantity

Returns: Whether the model converged

Definition at line 311 of file ADSingleVariableReturnMappingSolution.C.

 {
   // Require that we have at least done _num_resids evaluations before we allow for
   // acceptable convergence
   if (it < _num_resids)
     return false;
  
   // Check to see whether the residual has dropped by convergence_history_factor over
   // the last _num_resids iterations. If it has (which means it's still making progress),
   // don't consider it to be converged within the acceptable limits.
   const Real convergence_history_factor = 10.0;
   if (std::abs(_residual * convergence_history_factor) <
       std::abs(_residual_history[(it + 1) % _num_resids]))
     return false;
  
   // Now that it's determined that progress is not being made, treat it as converged if
   // we're within the acceptable convergence limits
   return converged(_residual / _acceptable_multiplier, reference);
 }

◆ initialGuess()

template<ComputeStage compute_stage>

virtual ADReal ADSingleVariableReturnMappingSolution< compute_stage >::initialGuess ( const ADReal & )

inlineprotectedvirtualinherited

Compute an initial guess for the value of the scalar.

For some cases, an intellegent starting point can provide enhanced robustness in the Newton iterations. This is also an opportunity for classes that derive from this to perform initialization tasks.

Parameters

effective_trial_stress Effective trial stress

Reimplemented in ADViscoplasticityStressUpdate< compute_stage >.

Definition at line 82 of file ADSingleVariableReturnMappingSolution.h.

82 { return 0.0; }

◆ initQpStatefulProperties()

template<ComputeStage compute_stage>

void ADIsotropicPlasticityStressUpdate< compute_stage >::initQpStatefulProperties ( )

overrideprotectedvirtual

Reimplemented from ADRadialReturnStressUpdate< compute_stage >.

Definition at line 83 of file ADIsotropicPlasticityStressUpdate.C.

 {
   _hardening_variable[_qp] = 0.0;
   _plastic_strain[_qp].zero();
 }

◆ internalSolve()

template<ComputeStage compute_stage>

ADSingleVariableReturnMappingSolution< compute_stage >::SolveState ADSingleVariableReturnMappingSolution< compute_stage >::internalSolve	(	const ADReal	effective_trial_stress,
		ADReal &	scalar,
		std::stringstream *	iter_output = `nullptr`
	)

privateinherited

Method called from within this class to perform the actual return mappping iterations.

Parameters

effective_trial_stress	Effective trial stress
scalar	Inelastic strain increment magnitude being solved for
iter_output	Output stream – if null, no output is produced

Returns: Whether the solution was successful

Definition at line 162 of file ADSingleVariableReturnMappingSolution.C.

 {
   scalar = initialGuess(effective_trial_stress);
   ADReal scalar_old = scalar;
   ADReal scalar_increment = 0.0;
   const ADReal min_permissible_scalar = minimumPermissibleValue(effective_trial_stress);
   const ADReal max_permissible_scalar = maximumPermissibleValue(effective_trial_stress);
   ADReal scalar_upper_bound = max_permissible_scalar;
   ADReal scalar_lower_bound = min_permissible_scalar;
   _iteration = 0;
  
   _initial_residual = _residual = computeResidual(effective_trial_stress, scalar);
  
   ADReal residual_old = _residual;
   Real init_resid_sign = MathUtils::sign(MetaPhysicL::raw_value(_residual));
   Real reference_residual = computeReferenceResidual(effective_trial_stress, scalar);
  
   if (converged(_residual, reference_residual))
   {
     iterationFinalize(scalar);
     outputIterationStep(iter_output, effective_trial_stress, scalar, reference_residual);
     return SolveState::SUCCESS;
   }
  
   _residual_history.assign(_num_resids, std::numeric_limits<Real>::max());
   _residual_history[0] = MetaPhysicL::raw_value(_residual);
  
   while (_iteration < _max_its && !converged(_residual, reference_residual) &&
          !convergedAcceptable(_iteration, reference_residual))
   {
     scalar_increment = -_residual / computeDerivative(effective_trial_stress, scalar);
     scalar = scalar_old + scalar_increment;
  
     if (_check_range)
       checkPermissibleRange(scalar,
                             scalar_increment,
                             scalar_old,
                             min_permissible_scalar,
                             max_permissible_scalar,
                             iter_output);
  
     _residual = computeResidual(effective_trial_stress, scalar);
     reference_residual = computeReferenceResidual(effective_trial_stress, scalar);
     iterationFinalize(scalar);
  
     if (_bracket_solution)
       updateBounds(
           scalar, _residual, init_resid_sign, scalar_upper_bound, scalar_lower_bound, iter_output);
  
     if (converged(_residual, reference_residual))
     {
       outputIterationStep(iter_output, effective_trial_stress, scalar, reference_residual);
       break;
     }
     else
     {
       bool modified_increment = false;
  
       // Line Search
       if (_line_search)
       {
         if (residual_old - _residual != 0.0)
         {
           ADReal alpha = residual_old / (residual_old - _residual);
           alpha = MathUtils::clamp(alpha, 1.0e-2, 1.0);
  
           if (alpha != 1.0)
           {
             modified_increment = true;
             scalar_increment *= alpha;
             if (iter_output)
               *iter_output << "  Line search alpha = " << MetaPhysicL::raw_value(alpha)
                            << " increment = " << MetaPhysicL::raw_value(scalar_increment)
                            << std::endl;
           }
         }
       }
  
       if (_bracket_solution)
       {
         // Check to see whether trial scalar_increment is outside the bounds, and set it to a point
         // within the bounds if it is
         if (scalar_old + scalar_increment >= scalar_upper_bound ||
             scalar_old + scalar_increment <= scalar_lower_bound)
         {
           if (scalar_upper_bound != max_permissible_scalar &&
               scalar_lower_bound != min_permissible_scalar)
           {
             const Real frac = 0.5;
             scalar_increment =
                 (1.0 - frac) * scalar_lower_bound + frac * scalar_upper_bound - scalar_old;
             modified_increment = true;
             if (iter_output)
               *iter_output << "  Trial scalar_increment exceeded bounds.  Setting between "
                               "lower/upper bounds. frac: "
                            << frac << std::endl;
           }
         }
       }
  
       // Update the trial scalar and recompute residual if the line search or bounds checking
       // modified the increment
       if (modified_increment)
       {
         scalar = scalar_old + scalar_increment;
         _residual = computeResidual(effective_trial_stress, scalar);
         reference_residual = computeReferenceResidual(effective_trial_stress, scalar);
         iterationFinalize(scalar);
  
         if (_bracket_solution)
           updateBounds(scalar,
                        _residual,
                        init_resid_sign,
                        scalar_upper_bound,
                        scalar_lower_bound,
                        iter_output);
       }
     }
  
     outputIterationStep(iter_output, effective_trial_stress, scalar, reference_residual);
  
     ++_iteration;
     residual_old = _residual;
     scalar_old = scalar;
     _residual_history[_iteration % _num_resids] = MetaPhysicL::raw_value(_residual);
   }
  
   if (std::isnan(_residual) || std::isinf(MetaPhysicL::raw_value(_residual)))
     return SolveState::NAN_INF;
  
   if (_iteration == _max_its)
     return SolveState::EXCEEDED_ITERATIONS;
  
   return SolveState::SUCCESS;
 }

◆ iterationFinalize()

template<ComputeStage compute_stage>

void ADIsotropicPlasticityStressUpdate< compute_stage >::iterationFinalize ( ADReal )

overrideprotectedvirtual

Finalize internal state variables for a model for a given iteration.

Parameters

scalar Inelastic strain increment magnitude being solved for

Reimplemented from ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 146 of file ADIsotropicPlasticityStressUpdate.C.

 {
   if (_yield_condition > 0.0)
     _hardening_variable[_qp] = computeHardeningValue(scalar);
 }

◆ maximumPermissibleValue()

template<ComputeStage compute_stage>

ADReal ADRadialReturnStressUpdate< compute_stage >::maximumPermissibleValue ( const ADReal & effective_trial_stress ) const

overridevirtualinherited

Compute the maximum permissible value of the scalar.

For some models, the magnitude of this may be known.

Parameters

effective_trial_stress Effective trial stress

Reimplemented from ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 133 of file ADRadialReturnStressUpdate.C.

 {
   return effective_trial_stress / _three_shear_modulus;
 }

◆ minimumPermissibleValue()

template<ComputeStage compute_stage>

virtual ADReal ADRadialReturnStressUpdate< compute_stage >::minimumPermissibleValue ( const ADReal & effective_trial_stress ) const

inlineoverridevirtualinherited

Compute the minimum permissible value of the scalar.

For some models, the magnitude of this may be known.

Parameters

effective_trial_stress Effective trial stress

Reimplemented from ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 73 of file ADRadialReturnStressUpdate.h.

   {
     return 0.0;
   }

◆ outputIterationStep()

template<ComputeStage compute_stage>

void ADSingleVariableReturnMappingSolution< compute_stage >::outputIterationStep	(	std::stringstream *	iter_output,
		const ADReal &	effective_trial_stress,
		const ADReal &	scalar,
		const Real	reference_residual
	)

protectedvirtualinherited

Output information for a single iteration step to build the convergence history of the model.

Parameters

iter_output	Output stream
it	Current iteration count
effective_trial_stress	Effective trial stress
scalar	Inelastic strain increment magnitude being solved for
residual	Current value of the residual
reference	Current value of the reference quantity

Definition at line 393 of file ADSingleVariableReturnMappingSolution.C.

 {
   if (iter_output)
   {
     const unsigned int it = _iteration;
     const Real residual = MetaPhysicL::raw_value(_residual);
  
     *iter_output << " iteration=" << it
                  << " trial_stress=" << MetaPhysicL::raw_value(effective_trial_stress)
                  << " scalar=" << MetaPhysicL::raw_value(scalar) << " residual=" << residual
                  << " ref_res=" << reference_residual
                  << " rel_res=" << std::abs(residual) / reference_residual
                  << " rel_tol=" << _relative_tolerance << " abs_res=" << std::abs(residual)
                  << " abs_tol=" << _absolute_tolerance << '\n';
   }
 }

◆ outputIterationSummary()

template<ComputeStage compute_stage>

void ADRadialReturnStressUpdate< compute_stage >::outputIterationSummary	(	std::stringstream *	iter_output,
		const unsigned int	total_it
	)

overrideprotectedvirtualinherited

Output summary information for the convergence history of the model.

Parameters

iter_output	Output stream
total_it	Total iteration count

Reimplemented from ADSingleVariableReturnMappingSolution< compute_stage >.

Definition at line 153 of file ADRadialReturnStressUpdate.C.

 {
   if (iter_output)
   {
     *iter_output << "At element " << _current_elem->id() << " _qp=" << _qp << " Coordinates "
                  << _q_point[_qp] << " block=" << _current_elem->subdomain_id() << '\n';
   }
   ADSingleVariableReturnMappingSolution<compute_stage>::outputIterationSummary(iter_output,
                                                                                total_it);
 }

◆ propagateQpStatefulProperties()

template<ComputeStage compute_stage>

void ADIsotropicPlasticityStressUpdate< compute_stage >::propagateQpStatefulProperties ( )

overrideprotectedvirtual

If updateState is not called during a timestep, this will be.

This method allows derived classes to set internal parameters from their Old values, for instance

Reimplemented from ADStressUpdateBase< compute_stage >.

Definition at line 91 of file ADIsotropicPlasticityStressUpdate.C.

 {
   _hardening_variable[_qp] = _hardening_variable_old[_qp];
   _plastic_strain[_qp] = _plastic_strain_old[_qp];
  
   propagateQpStatefulPropertiesRadialReturn();
 }

◆ propagateQpStatefulPropertiesRadialReturn()

template<ComputeStage compute_stage>

void ADRadialReturnStressUpdate< compute_stage >::propagateQpStatefulPropertiesRadialReturn ( )

protectedinherited

Propagate the properties pertaining to this intermediate class.

This is intended to be called from propagateQpStatefulProperties() in classes that inherit from this one. This is intentionally named uniquely because almost all models that derive from this class have their own stateful properties, and this forces them to define their own implementations of propagateQpStatefulProperties().

Definition at line 61 of file ADRadialReturnStressUpdate.C.

 {
   _effective_inelastic_strain[_qp] = _effective_inelastic_strain_old[_qp];
 }

◆ requiresIsotropicTensor()

template<ComputeStage compute_stage>

bool ADRadialReturnStressUpdate< compute_stage >::requiresIsotropicTensor ( )

inlineoverridevirtualinherited

Does the model require the elasticity tensor to be isotropic?

Implements ADStressUpdateBase< compute_stage >.

Definition at line 89 of file ADRadialReturnStressUpdate.h.

89 { return true; }

◆ resetProperties()

template<ComputeStage compute_stage>

void ADStressUpdateBase< compute_stage >::resetProperties ( )

inlinefinalinherited

Definition at line 104 of file ADStressUpdateBase.h.

104 {}

◆ resetQpProperties()

template<ComputeStage compute_stage>

void ADStressUpdateBase< compute_stage >::resetQpProperties ( )

inlinefinalinherited

Retained as empty methods to avoid a warning from Material.C in framework. These methods are unused in all inheriting classes and should not be overwritten.

Definition at line 103 of file ADStressUpdateBase.h.

103 {}

◆ returnMappingSolve()

template<ComputeStage compute_stage>

void ADSingleVariableReturnMappingSolution< compute_stage >::returnMappingSolve	(	const ADReal &	effective_trial_stress,
		ADReal &	scalar,
		const ConsoleStream &	console
	)

protectedinherited

Perform the return mapping iterations.

Parameters

effective_trial_stress	Effective trial stress
scalar	Inelastic strain increment magnitude being solved for
console	Console output

Definition at line 101 of file ADSingleVariableReturnMappingSolution.C.

 {
   // construct the stringstream here only if the debug level is set to ALL
   std::unique_ptr<std::stringstream> iter_output =
       (_internal_solve_output_on == InternalSolveOutput::ALWAYS)
           ? libmesh_make_unique<std::stringstream>()
           : nullptr;
  
   // do the internal solve and capture iteration info during the first round
   // iff full history output is requested regardless of whether the solve failed or succeeded
   auto solve_state =
       internalSolve(effective_trial_stress,
                     scalar,
                     _internal_solve_full_iteration_history ? iter_output.get() : nullptr);
   if (solve_state != SolveState::SUCCESS &&
       _internal_solve_output_on != InternalSolveOutput::ALWAYS)
   {
     // output suppressed by user, throw immediately
     if (_internal_solve_output_on == InternalSolveOutput::NEVER)
       throw MooseException("");
  
     // user expects some kind of output, if necessary setup output stream now
     if (!iter_output)
       iter_output = libmesh_make_unique<std::stringstream>();
  
     // add the appropriate error message to the output
     switch (solve_state)
     {
       case SolveState::NAN_INF:
         *iter_output << "Encountered inf or nan in material return mapping iterations.\n";
         break;
  
       case SolveState::EXCEEDED_ITERATIONS:
         *iter_output << "Exceeded maximum iterations in material return mapping iterations.\n";
         break;
  
       default:
         mooseError("Unhandled solver state");
     }
  
     // if full history output is only requested for failed solves we have to repeat
     // the solve a second time
     if (_internal_solve_full_iteration_history)
       internalSolve(effective_trial_stress, scalar, iter_output.get());
  
     // Append summary and throw exception
     outputIterationSummary(iter_output.get(), _iteration);
     throw MooseException(iter_output->str());
   }
  
   if (_internal_solve_output_on == InternalSolveOutput::ALWAYS)
   {
     // the solve did not fail but the user requested debug output anyways
     outputIterationSummary(iter_output.get(), _iteration);
     console << iter_output->str();
   }
 }

◆ setQp()

template<ComputeStage compute_stage>

void ADStressUpdateBase< compute_stage >::setQp ( unsigned int qp )

inherited

Sets the value of the global variable _qp for inheriting classes.

Definition at line 47 of file ADStressUpdateBase.C.

 {
   _qp = qp;
 }

◆ updateBounds()

template<ComputeStage compute_stage>

void ADSingleVariableReturnMappingSolution< compute_stage >::updateBounds	(	const ADReal &	scalar,
		const ADReal &	residual,
		const Real	init_resid_sign,
		ADReal &	scalar_upper_bound,
		ADReal &	scalar_lower_bound,
		std::stringstream *	iter_output
	)

privateinherited

Update the upper and lower bounds of the root for the effective inelastic strain.

Parameters

scalar	Current value of the inelastic strain increment
residual	Current value of the residual
init_resid_sign	Sign of the initial value of the residual
scalar_upper_bound	Upper bound value of scalar
scalar_lower_bound	Lower bound value of scalar
iter_output	Output stream

Definition at line 365 of file ADSingleVariableReturnMappingSolution.C.

 {
   // Update upper/lower bounds as applicable
   if (residual * init_resid_sign < 0.0 && scalar < scalar_upper_bound)
   {
     scalar_upper_bound = scalar;
     if (scalar_upper_bound < scalar_lower_bound)
     {
       scalar_upper_bound = scalar_lower_bound;
       scalar_lower_bound = 0.0;
       if (iter_output)
         *iter_output << "  Corrected for scalar_upper_bound < scalar_lower_bound" << std::endl;
     }
   }
   // Don't permit setting scalar_lower_bound > scalar_upper_bound (but do permit the reverse).
   // This ensures that if we encounter multiple roots, we pick the lowest one.
   else if (residual * init_resid_sign > 0.0 && scalar > scalar_lower_bound &&
            scalar < scalar_upper_bound)
     scalar_lower_bound = scalar;
 }

◆ updateState()

template<ComputeStage compute_stage>

void ADRadialReturnStressUpdate< compute_stage >::updateState	(	ADRankTwoTensor &	strain_increment,
		ADRankTwoTensor &	inelastic_strain_increment,
		const ADRankTwoTensor &	rotation_increment,
		ADRankTwoTensor &	stress_new,
		const RankTwoTensor &	stress_old,
		const ADRankFourTensor &	elasticity_tensor,
		const RankTwoTensor &	elastic_strain_old
	)

overridevirtualinherited

A radial return (J2) mapping method is performed with return mapping iterations.

Parameters

strain_increment	Sum of elastic and inelastic strain increments
inelastic_strain_increment	Inelastic strain increment calculated by this class
rotation	increment Not used by this class
stress_new	New trial stress from pure elastic calculation
stress_old	Old state of stress
elasticity_tensor	Rank 4 C_{ijkl}, must be isotropic
elastic_strain_old	Old state of total elastic strain

Implements ADStressUpdateBase< compute_stage >.

Definition at line 68 of file ADRadialReturnStressUpdate.C.

 {
   // compute the deviatoric trial stress and trial strain from the current intermediate
   // configuration
   ADRankTwoTensor deviatoric_trial_stress = stress_new.deviatoric();
  
   // compute the effective trial stress
   ADReal dev_trial_stress_squared =
       deviatoric_trial_stress.doubleContraction(deviatoric_trial_stress);
   ADReal effective_trial_stress =
       dev_trial_stress_squared == 0.0 ? 0.0 : std::sqrt(3.0 / 2.0 * dev_trial_stress_squared);
  
   // Set the value of 3 * shear modulus for use as a reference residual value
   _three_shear_modulus = 3.0 * ElasticityTensorTools::getIsotropicShearModulus(elasticity_tensor);
  
   computeStressInitialize(effective_trial_stress, elasticity_tensor);
  
   // Use Newton iteration to determine the scalar effective inelastic strain increment
   ADReal scalar_effective_inelastic_strain = 0.0;
   if (!MooseUtils::absoluteFuzzyEqual(effective_trial_stress, 0.0))
   {
     returnMappingSolve(effective_trial_stress, scalar_effective_inelastic_strain, _console);
     if (scalar_effective_inelastic_strain != 0.0)
       inelastic_strain_increment =
           deviatoric_trial_stress *
           (1.5 * scalar_effective_inelastic_strain / effective_trial_stress);
     else
       inelastic_strain_increment.zero();
   }
   else
     inelastic_strain_increment.zero();
  
   if (_apply_strain)
   {
     strain_increment -= inelastic_strain_increment;
     _effective_inelastic_strain[_qp] =
         _effective_inelastic_strain_old[_qp] + scalar_effective_inelastic_strain;
  
     // Use the old elastic strain here because we require tensors used by this class
     // to be isotropic and this method natively allows for changing in time
     // elasticity tensors
     stress_new = elasticity_tensor * (elastic_strain_old + strain_increment);
   }
  
   computeStressFinalize(inelastic_strain_increment);
 }

◆ validParams()

template<ComputeStage compute_stage>

InputParameters ADIsotropicPlasticityStressUpdate< compute_stage >::validParams ( )

static

Definition at line 21 of file ADIsotropicPlasticityStressUpdate.C.

 {
   InputParameters params = ADRadialReturnStressUpdate<compute_stage>::validParams();
   params.addClassDescription("This class uses the discrete material in a radial return isotropic "
                              "plasticity model.  This class is one of the basic radial return "
                              "constitutive models, yet it can be used in conjunction with other "
                              "creep and plasticity materials for more complex simulations.");
   // Linear strain hardening parameters
   params.addParam<FunctionName>("yield_stress_function",
                                 "Yield stress as a function of temperature");
   params.addParam<Real>(
       "yield_stress", 0.0, "The point at which plastic strain begins accumulating");
   params.addParam<FunctionName>("hardening_function",
                                 "True stress as a function of plastic strain");
   params.addParam<Real>("hardening_constant", 0.0, "Hardening slope");
   params.addCoupledVar("temperature", 0.0, "Coupled Temperature");
   params.addDeprecatedParam<std::string>(
       "plastic_prepend",
       "",
       "String that is prepended to the plastic_strain Material Property",
       "This has been replaced by the 'base_name' parameter");
   params.set<std::string>("effective_inelastic_strain_name") = "effective_plastic_strain";
   return params;
 }

Member Data Documentation

◆ _absolute_tolerance

template<ComputeStage compute_stage>

Real ADSingleVariableReturnMappingSolution< compute_stage >::_absolute_tolerance

privateinherited

Absolute convergence tolerance.

Definition at line 181 of file ADSingleVariableReturnMappingSolution.h.

◆ _acceptable_multiplier

template<ComputeStage compute_stage>

Real ADSingleVariableReturnMappingSolution< compute_stage >::_acceptable_multiplier

privateinherited

Multiplier applied to relative and absolute tolerances for acceptable convergence.

Definition at line 184 of file ADSingleVariableReturnMappingSolution.h.

◆ _apply_strain

template<ComputeStage compute_stage>

const bool ADRadialReturnStressUpdate< compute_stage >::_apply_strain

protectedinherited

Definition at line 129 of file ADRadialReturnStressUpdate.h.

◆ _base_name

template<ComputeStage compute_stage>

const std::string ADStressUpdateBase< compute_stage >::_base_name

protectedinherited

Name used as a prefix for all material properties related to the stress update model.

Definition at line 109 of file ADStressUpdateBase.h.

◆ _bracket_solution

template<ComputeStage compute_stage>

bool ADSingleVariableReturnMappingSolution< compute_stage >::_bracket_solution

protectedinherited

Whether to save upper and lower bounds of root for scalar, and set solution to the midpoint between those bounds if outside them.

Definition at line 131 of file ADSingleVariableReturnMappingSolution.h.

◆ _check_range

template<ComputeStage compute_stage>

bool ADSingleVariableReturnMappingSolution< compute_stage >::_check_range

protectedinherited

Whether to check to see whether iterative solution is within admissible range, and set within that range if outside.

Definition at line 124 of file ADSingleVariableReturnMappingSolution.h.

Referenced by ADViscoplasticityStressUpdate< compute_stage >::ADViscoplasticityStressUpdate().

◆ _effective_inelastic_strain_old

template<ComputeStage compute_stage>

const MaterialProperty<Real>& ADRadialReturnStressUpdate< compute_stage >::_effective_inelastic_strain_old

protectedinherited

Definition at line 127 of file ADRadialReturnStressUpdate.h.

◆ _hardening_constant

template<ComputeStage compute_stage>

const Real ADIsotropicPlasticityStressUpdate< compute_stage >::_hardening_constant

protected

Definition at line 78 of file ADIsotropicPlasticityStressUpdate.h.

◆ _hardening_function

template<ComputeStage compute_stage>

const Function* ADIsotropicPlasticityStressUpdate< compute_stage >::_hardening_function

protected

Definition at line 79 of file ADIsotropicPlasticityStressUpdate.h.

◆ _hardening_slope

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::_hardening_slope

protected

Definition at line 82 of file ADIsotropicPlasticityStressUpdate.h.

◆ _hardening_variable_old

template<ComputeStage compute_stage>

const MaterialProperty<Real>& ADIsotropicPlasticityStressUpdate< compute_stage >::_hardening_variable_old

protected

Definition at line 91 of file ADIsotropicPlasticityStressUpdate.h.

◆ _initial_residual

template<ComputeStage compute_stage>

ADReal ADSingleVariableReturnMappingSolution< compute_stage >::_initial_residual

privateinherited

Residual values, kept as members to retain solver state for summary outputting.

Definition at line 196 of file ADSingleVariableReturnMappingSolution.h.

◆ _internal_solve_full_iteration_history

template<ComputeStage compute_stage>

const bool ADSingleVariableReturnMappingSolution< compute_stage >::_internal_solve_full_iteration_history

privateinherited

Whether to output iteration information all the time (regardless of whether iterations converge)

Definition at line 175 of file ADSingleVariableReturnMappingSolution.h.

◆ _internal_solve_output_on

template<ComputeStage compute_stage>

enum ADSingleVariableReturnMappingSolution::InternalSolveOutput ADSingleVariableReturnMappingSolution< compute_stage >::_internal_solve_output_on

privateinherited

◆ _iteration

template<ComputeStage compute_stage>

unsigned int ADSingleVariableReturnMappingSolution< compute_stage >::_iteration

privateinherited

iteration number

Definition at line 193 of file ADSingleVariableReturnMappingSolution.h.

◆ _line_search

template<ComputeStage compute_stage>

bool ADSingleVariableReturnMappingSolution< compute_stage >::_line_search

protectedinherited

Whether to use line searches to improve convergence.

Definition at line 127 of file ADSingleVariableReturnMappingSolution.h.

◆ _max_inelastic_increment

template<ComputeStage compute_stage>

Real ADRadialReturnStressUpdate< compute_stage >::_max_inelastic_increment

protectedinherited

Definition at line 128 of file ADRadialReturnStressUpdate.h.

◆ _max_its

template<ComputeStage compute_stage>

const unsigned int ADSingleVariableReturnMappingSolution< compute_stage >::_max_its

privateinherited

Maximum number of return mapping iterations.

This exists only to avoid an infinite loop, and is is intended to be a large number that is not settable by the user.

Definition at line 172 of file ADSingleVariableReturnMappingSolution.h.

◆ _num_resids

template<ComputeStage compute_stage>

const std::size_t ADSingleVariableReturnMappingSolution< compute_stage >::_num_resids

privateinherited

Number of residuals to be stored in history.

Definition at line 187 of file ADSingleVariableReturnMappingSolution.h.

◆ _plastic_prepend

template<ComputeStage compute_stage>

const std::string ADIsotropicPlasticityStressUpdate< compute_stage >::_plastic_prepend

protected

a string to prepend to the plastic strain Material Property name

Definition at line 74 of file ADIsotropicPlasticityStressUpdate.h.

◆ _plastic_strain_old

template<ComputeStage compute_stage>

const MaterialProperty<RankTwoTensor>& ADIsotropicPlasticityStressUpdate< compute_stage >::_plastic_strain_old

protected

old value of plastic strain

Definition at line 88 of file ADIsotropicPlasticityStressUpdate.h.

◆ _relative_tolerance

template<ComputeStage compute_stage>

Real ADSingleVariableReturnMappingSolution< compute_stage >::_relative_tolerance

privateinherited

Relative convergence tolerance.

Definition at line 178 of file ADSingleVariableReturnMappingSolution.h.

◆ _residual

template<ComputeStage compute_stage>

ADReal ADSingleVariableReturnMappingSolution< compute_stage >::_residual

privateinherited

Definition at line 197 of file ADSingleVariableReturnMappingSolution.h.

◆ _residual_history

template<ComputeStage compute_stage>

std::vector<Real> ADSingleVariableReturnMappingSolution< compute_stage >::_residual_history

privateinherited

History of residuals used to check whether progress is still being made on decreasing the residual.

Definition at line 190 of file ADSingleVariableReturnMappingSolution.h.

◆ _svrms_name

template<ComputeStage compute_stage>

const std::string ADSingleVariableReturnMappingSolution< compute_stage >::_svrms_name

privateinherited

MOOSE input name of the object performing the solve.

Definition at line 201 of file ADSingleVariableReturnMappingSolution.h.

◆ _temperature

template<ComputeStage compute_stage>

const ADVariableValue& ADIsotropicPlasticityStressUpdate< compute_stage >::_temperature

protected

Definition at line 92 of file ADIsotropicPlasticityStressUpdate.h.

◆ _three_shear_modulus

template<ComputeStage compute_stage>

ADReal ADRadialReturnStressUpdate< compute_stage >::_three_shear_modulus

protectedinherited

3 * shear modulus

Definition at line 124 of file ADRadialReturnStressUpdate.h.

◆ _yield_condition

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::_yield_condition

protected

Definition at line 81 of file ADIsotropicPlasticityStressUpdate.h.

◆ _yield_stress

template<ComputeStage compute_stage>

ADReal ADIsotropicPlasticityStressUpdate< compute_stage >::_yield_stress

protected

Definition at line 77 of file ADIsotropicPlasticityStressUpdate.h.

Referenced by ADIsotropicPlasticityStressUpdate< compute_stage >::ADIsotropicPlasticityStressUpdate().

◆ _yield_stress_function

template<ComputeStage compute_stage>

const Function* ADIsotropicPlasticityStressUpdate< compute_stage >::_yield_stress_function

protected

Definition at line 76 of file ADIsotropicPlasticityStressUpdate.h.

Referenced by ADIsotropicPlasticityStressUpdate< compute_stage >::ADIsotropicPlasticityStressUpdate().

◆ usingMaterialMembers

template<ComputeStage compute_stage>

ADStressUpdateBase< compute_stage >::usingMaterialMembers

protectedinherited

Definition at line 111 of file ADStressUpdateBase.h.

◆ usingRadialReturnStressUpdateMembers

template<ComputeStage compute_stage>

ADIsotropicPlasticityStressUpdate< compute_stage >::usingRadialReturnStressUpdateMembers

protected

Definition at line 94 of file ADIsotropicPlasticityStressUpdate.h.

◆ usingSingleVariableReturnMappingSolutionMembers

template<ComputeStage compute_stage>

ADRadialReturnStressUpdate< compute_stage >::usingSingleVariableReturnMappingSolutionMembers

protectedinherited

Definition at line 132 of file ADRadialReturnStressUpdate.h.

◆ usingStressUpdateBaseMembers

template<ComputeStage compute_stage>

ADRadialReturnStressUpdate< compute_stage >::usingStressUpdateBaseMembers

protectedinherited

Definition at line 131 of file ADRadialReturnStressUpdate.h.

The documentation for this class was generated from the following files:

tensor_mechanics/include/materials/ADIsotropicPlasticityStressUpdate.h
tensor_mechanics/src/materials/ADIsotropicPlasticityStressUpdate.C

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Private Types

Private Member Functions

Private Attributes

Detailed Description

template<ComputeStage compute_stage> class ADIsotropicPlasticityStressUpdate< compute_stage >

Member Enumeration Documentation

◆ InternalSolveOutput

◆ SolveState

Constructor & Destructor Documentation

◆ ADIsotropicPlasticityStressUpdate()

Member Function Documentation

◆ ADMaterialProperty() [1/2]

◆ ADMaterialProperty() [2/2]

◆ checkPermissibleRange()

◆ computeDerivative()

◆ computeHardeningDerivative()

◆ computeHardeningValue() [1/2]

◆ computeHardeningValue() [2/2]

◆ computeReferenceResidual()

◆ computeResidual()

◆ computeStressFinalize()

◆ computeStressInitialize()

◆ computeTimeStepLimit()

◆ computeYieldStress() [1/2]

◆ computeYieldStress() [2/2]

◆ converged()

◆ convergedAcceptable()

◆ initialGuess()

◆ initQpStatefulProperties()

◆ internalSolve()

◆ iterationFinalize()

◆ maximumPermissibleValue()

◆ minimumPermissibleValue()

◆ outputIterationStep()

◆ outputIterationSummary()

◆ propagateQpStatefulProperties()

◆ propagateQpStatefulPropertiesRadialReturn()

◆ requiresIsotropicTensor()

◆ resetProperties()

◆ resetQpProperties()

◆ returnMappingSolve()

◆ setQp()

◆ updateBounds()

◆ updateState()

◆ validParams()

Member Data Documentation

◆ _absolute_tolerance

◆ _acceptable_multiplier

◆ _apply_strain

◆ _base_name

◆ _bracket_solution

◆ _check_range

◆ _effective_inelastic_strain_old

◆ _hardening_constant

◆ _hardening_function

◆ _hardening_slope

◆ _hardening_variable_old

◆ _initial_residual

◆ _internal_solve_full_iteration_history

◆ _internal_solve_output_on

◆ _iteration

◆ _line_search

◆ _max_inelastic_increment

◆ _max_its

◆ _num_resids

◆ _plastic_prepend

◆ _plastic_strain_old

◆ _relative_tolerance

◆ _residual

◆ _residual_history

◆ _svrms_name

◆ _temperature

◆ _three_shear_modulus

◆ _yield_condition

◆ _yield_stress

◆ _yield_stress_function

template<ComputeStage compute_stage>
class ADIsotropicPlasticityStressUpdate< compute_stage >