DynamicStressDivergenceTensors.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 "StressDivergenceTensors.h"

class DynamicStressDivergenceTensors : public StressDivergenceTensors
{
public:
  static InputParameters validParams();

  DynamicStressDivergenceTensors(const InputParameters & parameters);

protected:
  virtual Real computeQpResidual();
  virtual Real computeQpJacobian();
  virtual Real computeQpOffDiagJacobian(unsigned int jvar);

  const MaterialProperty<RankTwoTensor> & _stress_older;
  const MaterialProperty<RankTwoTensor> & _stress_old;

  // Rayleigh damping parameter _zeta and HHT time integration parameter _alpha
  const MaterialProperty<Real> & _zeta;
  const Real _alpha;
  const bool _static_initialization;
};