NonlinearPlaneStrain.h

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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
 
#pragma once
 
#include "Nonlinear.h"
#include "ScalarCoupleable.h"
 
namespace SolidMechanics
{
 
class NonlinearPlaneStrain : public Nonlinear, public ScalarCoupleable
{
public:
  NonlinearPlaneStrain(SolidModel & solid_model,
                       const std::string & name,
                       const InputParameters & parameters);
 
  virtual ~NonlinearPlaneStrain();
 
  const VariableGradient & _grad_disp_x;
  const VariableGradient & _grad_disp_y;
  bool _have_strain_zz;
  const VariableValue & _strain_zz;
  bool _have_scalar_strain_zz;
  const VariableValue & _scalar_strain_zz;
 
  const VariableGradient & _grad_disp_x_old;
  const VariableGradient & _grad_disp_y_old;
  const VariableValue & _strain_zz_old;
  const VariableValue & _scalar_strain_zz_old;
 
protected:
  virtual void computeDeformationGradient(unsigned int qp, ColumnMajorMatrix & F);
  virtual void fillMatrix(unsigned int qp,
                          const VariableGradient & grad_x,
                          const VariableGradient & grad_y,
                          const Real & strain_zz,
                          ColumnMajorMatrix & A) const;
 
  virtual Real volumeRatioOld(unsigned qp) const;
 
  virtual void computeIncrementalDeformationGradient(std::vector<ColumnMajorMatrix> & Fhat);
  const bool _volumetric_locking_correction;
};
 
} // namespace solid_mechanics