PlasticHeatEnergy Class Reference

Provides a heat source from plastic deformation: coeff * stress * plastic_strain_rate. More...

#include <PlasticHeatEnergy.h>

Inheritance diagram for PlasticHeatEnergy:

Public Member Functions
	PlasticHeatEnergy (const InputParameters &parameters)

Static Public Member Functions
static InputParameters	validParams ()

Protected Member Functions
virtual Real	computeQpResidual () override
virtual Real	computeQpJacobian () override
virtual Real	computeQpOffDiagJacobian (unsigned int jvar) override

Protected Attributes
Real	_coeff
	coefficient of stress * plastic_strain_rate More...
const std::string	_base_name
	optional parameter that allows multiple mechanics models to be defined More...
const MaterialProperty< Real > &	_plastic_heat
	stress * plastic_strain_rate More...
const MaterialProperty< RankTwoTensor > &	_dplastic_heat_dstrain
	d(plastic_heat)/d(total_strain) More...
unsigned int	_ndisp
	umber of coupled displacement variables More...
std::vector< unsigned int >	_disp_var
	MOOSE variable number for the displacement variables. More...

Detailed Description

Provides a heat source from plastic deformation: coeff * stress * plastic_strain_rate.

Definition at line 25 of file PlasticHeatEnergy.h.

Constructor & Destructor Documentation

PlasticHeatEnergy()

PlasticHeatEnergy::PlasticHeatEnergy

(

const InputParameters &

parameters

)

Definition at line 30 of file PlasticHeatEnergy.C.

  : Kernel(parameters),
    _coeff(getParam<Real>("coeff")),
    _base_name(isParamValid("base_name") ? getParam<std::string>("base_name") + "_" : ""),
    _plastic_heat(getMaterialProperty<Real>(_base_name + "plastic_heat")),
    _dplastic_heat_dstrain(
        getMaterialProperty<RankTwoTensor>(_base_name + "dplastic_heat_dstrain")),
    _ndisp(coupledComponents("displacements")),
    _disp_var(_ndisp)
{
  for (unsigned int i = 0; i < _ndisp; ++i)
    _disp_var[i] = coupled("displacements", i);
 
  // Checking for consistency between mesh size and length of the provided displacements vector
  if (_ndisp != _mesh.dimension())
    mooseError("PlasticHeatEnergy: The number of displacement variables supplied must match the "
               "mesh dimension.");
}

Member Function Documentation

computeQpJacobian()

Real PlasticHeatEnergy::computeQpJacobian ( )

overrideprotectedvirtual

Reimplemented in PorousFlowPlasticHeatEnergy.

Definition at line 56 of file PlasticHeatEnergy.C.

{
  return computeQpOffDiagJacobian(_var.number());
}

computeQpOffDiagJacobian()

Real PlasticHeatEnergy::computeQpOffDiagJacobian ( unsigned int  jvar )

overrideprotectedvirtual

Reimplemented in PorousFlowPlasticHeatEnergy.

Definition at line 62 of file PlasticHeatEnergy.C.

{
  for (unsigned int i = 0; i < _ndisp; ++i)
    if (jvar == _disp_var[i])
      return -_test[_i][_qp] * _coeff * (_dplastic_heat_dstrain[_qp] * _grad_phi[_j][_qp])(i);
 
  return 0.0;
}

Referenced by computeQpJacobian(), and PorousFlowPlasticHeatEnergy::computeQpOffDiagJacobian().

computeQpResidual()

Real PlasticHeatEnergy::computeQpResidual ( )

overrideprotectedvirtual

Reimplemented in PorousFlowPlasticHeatEnergy.

Definition at line 50 of file PlasticHeatEnergy.C.

{
  return -_test[_i][_qp] * _coeff * _plastic_heat[_qp];
}

Referenced by PorousFlowPlasticHeatEnergy::computeQpOffDiagJacobian(), and PorousFlowPlasticHeatEnergy::computeQpResidual().

validParams()

InputParameters PlasticHeatEnergy::validParams ( )

static

Definition at line 19 of file PlasticHeatEnergy.C.

{
  InputParameters params = Kernel::validParams();
  params.addClassDescription("Plastic heat energy density = coeff * stress * plastic_strain_rate");
  params.addRequiredCoupledVar("displacements",
                               "The string of displacements suitable for the problem statement");
  params.addParam<std::string>("base_name", "Material property base name");
  params.addParam<Real>("coeff", 1.0, "Heat energy density = coeff * stress * plastic_strain_rate");
  return params;
}

Member Data Documentation

_base_name

const std::string PlasticHeatEnergy::_base_name

protected

optional parameter that allows multiple mechanics models to be defined

Definition at line 41 of file PlasticHeatEnergy.h.

_coeff

Real PlasticHeatEnergy::_coeff

protected

coefficient of stress * plastic_strain_rate

Definition at line 38 of file PlasticHeatEnergy.h.

Referenced by computeQpOffDiagJacobian(), and computeQpResidual().

_disp_var

std::vector<unsigned int> PlasticHeatEnergy::_disp_var

protected

MOOSE variable number for the displacement variables.

Definition at line 53 of file PlasticHeatEnergy.h.

Referenced by computeQpOffDiagJacobian(), and PlasticHeatEnergy().

_dplastic_heat_dstrain

const MaterialProperty<RankTwoTensor>& PlasticHeatEnergy::_dplastic_heat_dstrain

protected

d(plastic_heat)/d(total_strain)

Definition at line 47 of file PlasticHeatEnergy.h.

Referenced by computeQpOffDiagJacobian().

_ndisp

unsigned int PlasticHeatEnergy::_ndisp

protected

umber of coupled displacement variables

Definition at line 50 of file PlasticHeatEnergy.h.

Referenced by computeQpOffDiagJacobian(), and PlasticHeatEnergy().

_plastic_heat

const MaterialProperty<Real>& PlasticHeatEnergy::_plastic_heat

protected

stress * plastic_strain_rate

Definition at line 44 of file PlasticHeatEnergy.h.

Referenced by computeQpResidual().

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

• tensor_mechanics/include/kernels/PlasticHeatEnergy.h
• tensor_mechanics/src/kernels/PlasticHeatEnergy.C