MixedModeEquivalentK.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 "MixedModeEquivalentK.h"
 
registerMooseObject("TensorMechanicsApp", MixedModeEquivalentK);
 
defineLegacyParams(MixedModeEquivalentK);
 
InputParameters
MixedModeEquivalentK::validParams()
{
  InputParameters params = GeneralPostprocessor::validParams();
  params.addClassDescription("Computes the mixed-mode stress intensity factor "
                             "given the $K_I$, $K_{II}$, and $K_{III}$ stress "
                             "intensity factors");
  params.addRequiredParam<PostprocessorName>("KI_name", "The name of the KI postprocessor");
  params.addRequiredParam<PostprocessorName>("KII_name", "The name of the KII postprocessor");
  params.addRequiredParam<PostprocessorName>("KIII_name", "The name of the KIII postprocessor");
  params.addRequiredParam<Real>("poissons_ratio", "Poisson's ratio for the material.");
  return params;
}
 
MixedModeEquivalentK::MixedModeEquivalentK(const InputParameters & parameters)
  : GeneralPostprocessor(parameters),
    _ki_value(getPostprocessorValue("KI_name")),
    _kii_value(getPostprocessorValue("KII_name")),
    _kiii_value(getPostprocessorValue("KIII_name")),
    _poissons_ratio(getParam<Real>("poissons_ratio"))
{
}
 
Real
MixedModeEquivalentK::getValue()
{
  return std::sqrt(_ki_value * _ki_value + _kii_value * _kii_value +
                   1 / (1 - _poissons_ratio) * _kiii_value * _kiii_value);
}