CrystalPlasticityStateVarRateComponentGSS Class Reference

Phenomenological constitutive model state variable evolution rate component userobject class. More...

#include <CrystalPlasticityStateVarRateComponentGSS.h>

Inheritance diagram for CrystalPlasticityStateVarRateComponentGSS:

Public Member Functions
	CrystalPlasticityStateVarRateComponentGSS (const InputParameters &parameters)
virtual bool	calcStateVariableEvolutionRateComponent (unsigned int qp, std::vector< Real > &val) const
virtual unsigned int	variableSize () const
	Returns the size of variable. More...

Static Public Member Functions
static InputParameters	validParams ()

Protected Attributes
const MaterialProperty< std::vector< Real > > &	_mat_prop_slip_rate
const MaterialProperty< std::vector< Real > > &	_mat_prop_state_var
FileName	_slip_sys_hard_prop_file_name
	The hardening parameters in this class are read from .i file. The user can override to read from file. More...
std::vector< Real >	_hprops
unsigned int	_variable_size

Detailed Description

Phenomenological constitutive model state variable evolution rate component userobject class.

Definition at line 22 of file CrystalPlasticityStateVarRateComponentGSS.h.

Constructor & Destructor Documentation

CrystalPlasticityStateVarRateComponentGSS()

CrystalPlasticityStateVarRateComponentGSS::CrystalPlasticityStateVarRateComponentGSS

(

const InputParameters &

parameters

)

Definition at line 38 of file CrystalPlasticityStateVarRateComponentGSS.C.

  : CrystalPlasticityStateVarRateComponent(parameters),
    _mat_prop_slip_rate(
        getMaterialProperty<std::vector<Real>>(parameters.get<std::string>("uo_slip_rate_name"))),
    _mat_prop_state_var(
        getMaterialProperty<std::vector<Real>>(parameters.get<std::string>("uo_state_var_name"))),
    _slip_sys_hard_prop_file_name(getParam<FileName>("slip_sys_hard_prop_file_name")),
    _hprops(getParam<std::vector<Real>>("hprops"))
{
}

Member Function Documentation

calcStateVariableEvolutionRateComponent()

bool CrystalPlasticityStateVarRateComponentGSS::calcStateVariableEvolutionRateComponent ( unsigned int  qp, std::vector< Real > &  val  ) const

virtual

Implements CrystalPlasticityStateVarRateComponent.

Definition at line 51 of file CrystalPlasticityStateVarRateComponentGSS.C.

{
  val.assign(_variable_size, 0.0);
 
  Real r = _hprops[0];
  Real h0 = _hprops[1];
  Real tau_sat = _hprops[2];
 
  DenseVector<Real> hb(_variable_size);
  Real qab;
  Real a = _hprops[3]; // Kalidindi
 
  for (unsigned int i = 0; i < _variable_size; ++i)
    hb(i) = h0 * std::pow(std::abs(1.0 - _mat_prop_state_var[qp][i] / tau_sat), a) *
            std::copysign(1.0, 1.0 - _mat_prop_state_var[qp][i] / tau_sat);
 
  for (unsigned int i = 0; i < _variable_size; ++i)
    for (unsigned int j = 0; j < _variable_size; ++j)
    {
      unsigned int iplane, jplane;
      iplane = i / 3;
      jplane = j / 3;
 
      if (iplane == jplane) // Kalidindi
        qab = 1.0;
      else
        qab = r;
 
      val[i] += std::abs(_mat_prop_slip_rate[qp][j]) * qab * hb(j);
    }
 
  return true;
}

validParams()

InputParameters CrystalPlasticityStateVarRateComponentGSS::validParams ( )

static

Definition at line 18 of file CrystalPlasticityStateVarRateComponentGSS.C.

{
  InputParameters params = CrystalPlasticityStateVarRateComponent::validParams();
  params.addParam<std::string>(
      "uo_slip_rate_name",
      "Name of slip rate property: Same as slip rate user object specified in input file.");
  params.addParam<std::string>("uo_state_var_name",
                               "Name of state variable property: Same as "
                               "state variable user object specified in input "
                               "file.");
  params.addParam<FileName>(
      "slip_sys_hard_prop_file_name",
      "",
      "Name of the file containing the values of hardness evolution parameters");
  params.addParam<std::vector<Real>>("hprops", "Hardening properties");
  params.addClassDescription("Phenomenological constitutive model state variable evolution rate "
                             "component base class.  Override the virtual functions in your class");
  return params;
}

variableSize()

unsigned int CrystalPlasticityUOBase::variableSize ( ) const

virtualinherited

Returns the size of variable.

Definition at line 30 of file CrystalPlasticityUOBase.C.

{
  return _variable_size;
}

Member Data Documentation

_hprops

std::vector<Real> CrystalPlasticityStateVarRateComponentGSS::_hprops

protected

Definition at line 39 of file CrystalPlasticityStateVarRateComponentGSS.h.

Referenced by calcStateVariableEvolutionRateComponent().

_mat_prop_slip_rate

const MaterialProperty<std::vector<Real> >& CrystalPlasticityStateVarRateComponentGSS::_mat_prop_slip_rate

protected

Definition at line 33 of file CrystalPlasticityStateVarRateComponentGSS.h.

Referenced by calcStateVariableEvolutionRateComponent().

_mat_prop_state_var

const MaterialProperty<std::vector<Real> >& CrystalPlasticityStateVarRateComponentGSS::_mat_prop_state_var

protected

Definition at line 34 of file CrystalPlasticityStateVarRateComponentGSS.h.

Referenced by calcStateVariableEvolutionRateComponent().

_slip_sys_hard_prop_file_name

FileName CrystalPlasticityStateVarRateComponentGSS::_slip_sys_hard_prop_file_name

protected

The hardening parameters in this class are read from .i file. The user can override to read from file.

Definition at line 37 of file CrystalPlasticityStateVarRateComponentGSS.h.

_variable_size

unsigned int CrystalPlasticityUOBase::_variable_size

protectedinherited

Definition at line 33 of file CrystalPlasticityUOBase.h.

Referenced by CrystalPlasticitySlipRateGSS::calcFlowDirection(), CrystalPlasticitySlipRateGSS::calcSlipRate(), CrystalPlasticitySlipRateGSS::calcSlipRateDerivative(), CrystalPlasticitySlipResistanceGSS::calcSlipResistance(), calcStateVariableEvolutionRateComponent(), CrystalPlasticityStateVarRateComponentVoce::calcStateVariableEvolutionRateComponent(), CrystalPlasticitySlipRateGSS::getFlowRateParams(), CrystalPlasticitySlipRate::getSlipSystems(), CrystalPlasticityStateVariable::initSlipSysProps(), CrystalPlasticityStateVarRateComponentVoce::initSlipSystemGroupID(), CrystalPlasticityStateVarRateComponentVoce::initSlipSystemPlaneID(), CrystalPlasticitySlipRateGSS::readFileFlowRateParams(), CrystalPlasticityStateVariable::readInitialValueFromFile(), CrystalPlasticityStateVariable::updateStateVariable(), and CrystalPlasticityUOBase::variableSize().

---

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

• tensor_mechanics/include/userobjects/CrystalPlasticityStateVarRateComponentGSS.h
• tensor_mechanics/src/userobjects/CrystalPlasticityStateVarRateComponentGSS.C