ElementJacobianDamper.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

// Moose Includes
#include "GeneralDamper.h"
#include "MooseVariable.h"

// Forward Declarations
class FEProblemBase;
class MooseMesh;
class DisplacedProblem;

class ElementJacobianDamper : public GeneralDamper
{
public:
  static InputParameters validParams();

  ElementJacobianDamper(const InputParameters & parameters);

  virtual void initialSetup() override;

  virtual Real computeDamping(const NumericVector<Number> & /* solution */,
                              const NumericVector<Number> & update) override;

protected:
  THREAD_ID _tid;
  Assembly & _assembly;

  const QBase * const & _qrule;

  const MooseArray<Real> & _JxW;

  FEProblemBase & _fe_problem;

  MooseSharedPointer<DisplacedProblem> _displaced_problem;

  MooseMesh * _mesh;

  std::vector<MooseVariable *> _disp_var;

  unsigned int _ndisp;

  std::vector<VariableValue> _disp_incr;

  const Real _max_jacobian_diff;
};