AdvectiveStress.h

// Copyright 2024, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
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#pragma once
 
#include "neml2/models/Model.h"
 
namespace neml2
{
class AdvectiveStress : public Model
{
public:
  static OptionSet expected_options();
 
  AdvectiveStress(const OptionSet & options);
 
protected:
  void set_value(bool out, bool dout_din, bool d2out_din2) override;
 
  const Scalar & _coeff;
 
  // Jacobian
  const Variable<Scalar> & _J;
 
  // First Piola-Kirchoff Stress
  const Variable<R2> & _P;
 
  // Deformation Gradient
  const Variable<R2> & _F;
 
  // output stress
  Variable<Scalar> & _ps;
};
}