ComputeStressBase.C

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#include "ComputeStressBase.h"
#include "ComputeElasticityTensorBase.h"
#include "Function.h"
 
defineLegacyParams(ComputeStressBase);
 
InputParameters
ComputeStressBase::validParams()
{
  InputParameters params = Material::validParams();
  params.addParam<std::string>("base_name",
                               "Optional parameter that allows the user to define "
                               "multiple mechanics material systems on the same "
                               "block, i.e. for multiple phases");
  params.suppressParameter<bool>("use_displaced_mesh");
  return params;
}
 
ComputeStressBase::ComputeStressBase(const InputParameters & parameters)
  : DerivativeMaterialInterface<Material>(parameters),
    _base_name(isParamValid("base_name") ? getParam<std::string>("base_name") + "_" : ""),
    _mechanical_strain(getMaterialPropertyByName<RankTwoTensor>(_base_name + "mechanical_strain")),
    _stress(declareProperty<RankTwoTensor>(_base_name + "stress")),
    _elastic_strain(declareProperty<RankTwoTensor>(_base_name + "elastic_strain")),
    _extra_stress(getDefaultMaterialProperty<RankTwoTensor>(_base_name + "extra_stress")),
    _Jacobian_mult(declareProperty<RankFourTensor>(_base_name + "Jacobian_mult"))
{
 
  if (getParam<bool>("use_displaced_mesh"))
    mooseError("The stress calculator needs to run on the undisplaced mesh.");
}
 
void
ComputeStressBase::initQpStatefulProperties()
{
  _elastic_strain[_qp].zero();
  _stress[_qp].zero();
}
 
void
ComputeStressBase::computeQpProperties()
{
  computeQpStress();
 
  // Add in extra stress
  _stress[_qp] += _extra_stress[_qp];
}