ComputePlaneStressIsotropicElasticityTensor.C

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
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//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html
 
#include "ComputePlaneStressIsotropicElasticityTensor.h"
#include "ElasticityTensorTools.h"
 
registerMooseObject("PeridynamicsTestApp", ComputePlaneStressIsotropicElasticityTensor);
 
InputParameters
ComputePlaneStressIsotropicElasticityTensor::validParams()
{
  InputParameters params = ComputeIsotropicElasticityTensor::validParams();
  params.addClassDescription(
      "Class for computing a constant isotropic elasticity tensor for strong plane stress");
 
  return params;
}
 
ComputePlaneStressIsotropicElasticityTensor::ComputePlaneStressIsotropicElasticityTensor(
    const InputParameters & parameters)
  : ComputeIsotropicElasticityTensor(parameters)
{
}
 
void
ComputePlaneStressIsotropicElasticityTensor::residualSetup()
{
  ComputeIsotropicElasticityTensor::residualSetup();
 
  // Retrieve youngs_modulus and poissons_ratio from the general 3D elasticity_tensor
  Real youngs_modulus = ElasticityTensorTools::getIsotropicYoungsModulus(_Cijkl);
  Real poissons_ratio = ElasticityTensorTools::getIsotropicPoissonsRatio(_Cijkl);
 
  // Reconstructe the elasticity tensor specific for plane stress case
  _Cijkl.zero();
  _Cijkl(0, 0, 0, 0) = youngs_modulus / (1.0 - poissons_ratio * poissons_ratio);
  _Cijkl(1, 1, 1, 1) = _Cijkl(0, 0, 0, 0);
  _Cijkl(0, 0, 1, 1) = _Cijkl(0, 0, 0, 0) * poissons_ratio;
  _Cijkl(1, 1, 0, 0) = _Cijkl(0, 0, 1, 1);
  _Cijkl(0, 1, 0, 1) = youngs_modulus / 2.0 / (1.0 + poissons_ratio);
  _Cijkl(0, 1, 1, 0) = _Cijkl(0, 1, 0, 1);
  _Cijkl(1, 0, 0, 1) = _Cijkl(0, 1, 0, 1);
  _Cijkl(1, 0, 1, 0) = _Cijkl(0, 1, 0, 1);
}