FluxBasedStrainIncrement Class Reference

FluxBasedStrainIncrement computes strain increment based on flux (vacancy) Forest et. More...

#include <FluxBasedStrainIncrement.h>

Inheritance diagram for FluxBasedStrainIncrement:

Public Member Functions
	FluxBasedStrainIncrement (const InputParameters &parameters)

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
virtual void	initQpStatefulProperties ()
virtual void	computeQpProperties ()
virtual void	computeFluxGradTensor ()

Protected Attributes
const VariableGradient *	_grad_jx
bool	_has_yflux
bool	_has_zflux
const VariableGradient *	_grad_jy
const VariableGradient *	_grad_jz
const VariableValue &	_gb
MaterialProperty< RankTwoTensor > &	_strain_increment
RankTwoTensor	_flux_grad_tensor

Detailed Description

FluxBasedStrainIncrement computes strain increment based on flux (vacancy) Forest et.

al. MSMSE 2015

Definition at line 25 of file FluxBasedStrainIncrement.h.

Constructor & Destructor Documentation

FluxBasedStrainIncrement()

FluxBasedStrainIncrement::FluxBasedStrainIncrement

(

const InputParameters &

parameters

)

Definition at line 31 of file FluxBasedStrainIncrement.C.

  : DerivativeMaterialInterface<Material>(parameters),
    _grad_jx(&coupledGradient("xflux")),
    _has_yflux(isCoupled("yflux")),
    _has_zflux(isCoupled("zflux")),
    _grad_jy(_has_yflux ? &coupledGradient("yflux") : nullptr),
    _grad_jz(_has_zflux ? &coupledGradient("zflux") : nullptr),
    _gb(isCoupled("gb") ? coupledValue("gb") : _zero),
    _strain_increment(
        declareProperty<RankTwoTensor>(getParam<MaterialPropertyName>("property_name")))
{
}

Member Function Documentation

computeFluxGradTensor()

void FluxBasedStrainIncrement::computeFluxGradTensor ( )

protectedvirtual

Definition at line 60 of file FluxBasedStrainIncrement.C.

{
  _flux_grad_tensor.zero();
 
  _flux_grad_tensor.fillRow(0, (*_grad_jx)[_qp]);
 
  if (_has_yflux)
    _flux_grad_tensor.fillRow(1, (*_grad_jy)[_qp]);
 
  if (_has_zflux)
    _flux_grad_tensor.fillRow(2, (*_grad_jz)[_qp]);
}

Referenced by computeQpProperties().

computeQpProperties()

void FluxBasedStrainIncrement::computeQpProperties ( )

protectedvirtual

Definition at line 51 of file FluxBasedStrainIncrement.C.

{
  computeFluxGradTensor();
 
  _strain_increment[_qp] = -0.5 * (_flux_grad_tensor + _flux_grad_tensor.transpose());
  _strain_increment[_qp] *= (1.0 - _gb[_qp]) * _dt;
}

initQpStatefulProperties()

void FluxBasedStrainIncrement::initQpStatefulProperties ( )

protectedvirtual

Definition at line 45 of file FluxBasedStrainIncrement.C.

{
  _strain_increment[_qp].zero();
}

validParams()

InputParameters FluxBasedStrainIncrement::validParams ( )

static

Definition at line 18 of file FluxBasedStrainIncrement.C.

{
  InputParameters params = Material::validParams();
  params.addClassDescription("Compute strain increment based on flux");
  params.addRequiredCoupledVar("xflux", "x or 0-direction component of flux");
  params.addCoupledVar("yflux", "y or 1-direction component of flux");
  params.addCoupledVar("zflux", "z or 2-direction component of flux");
  params.addCoupledVar("gb", "Grain boundary order parameter");
  params.addRequiredParam<MaterialPropertyName>("property_name",
                                                "Name of diffusive strain increment property");
  return params;
}

Member Data Documentation

_flux_grad_tensor

RankTwoTensor FluxBasedStrainIncrement::_flux_grad_tensor

protected

Definition at line 48 of file FluxBasedStrainIncrement.h.

Referenced by computeFluxGradTensor(), and computeQpProperties().

_gb

const VariableValue& FluxBasedStrainIncrement::_gb

protected

Definition at line 44 of file FluxBasedStrainIncrement.h.

Referenced by computeQpProperties().

_grad_jx

const VariableGradient* FluxBasedStrainIncrement::_grad_jx

protected

Definition at line 38 of file FluxBasedStrainIncrement.h.

Referenced by computeFluxGradTensor().

_grad_jy

const VariableGradient* FluxBasedStrainIncrement::_grad_jy

protected

Definition at line 41 of file FluxBasedStrainIncrement.h.

Referenced by computeFluxGradTensor().

_grad_jz

const VariableGradient* FluxBasedStrainIncrement::_grad_jz

protected

Definition at line 42 of file FluxBasedStrainIncrement.h.

Referenced by computeFluxGradTensor().

_has_yflux

bool FluxBasedStrainIncrement::_has_yflux

protected

Definition at line 39 of file FluxBasedStrainIncrement.h.

Referenced by computeFluxGradTensor().

_has_zflux

bool FluxBasedStrainIncrement::_has_zflux

protected

Definition at line 40 of file FluxBasedStrainIncrement.h.

Referenced by computeFluxGradTensor().

_strain_increment

MaterialProperty<RankTwoTensor>& FluxBasedStrainIncrement::_strain_increment

protected

Definition at line 46 of file FluxBasedStrainIncrement.h.

Referenced by computeQpProperties(), and initQpStatefulProperties().

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

• tensor_mechanics/include/materials/FluxBasedStrainIncrement.h
• tensor_mechanics/src/materials/FluxBasedStrainIncrement.C