LinearIsotropicStrainEnergyDensity.h

// Copyright 2024, UChicago Argonne, LLC
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// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
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#pragma once
 
#include "neml2/models/phase_field_fracture/StrainEnergyDensity.h"
#include "neml2/models/solid_mechanics/elasticity/ElasticityInterface.h"
#include "neml2/models/solid_mechanics/elasticity/IsotropicElasticityConverter.h"
 
namespace neml2
{
class Scalar;
 
class LinearIsotropicStrainEnergyDensity : public ElasticityInterface<StrainEnergyDensity, 2>
{
public:
  static OptionSet expected_options();
 
  LinearIsotropicStrainEnergyDensity(const OptionSet & options);
 
protected:
  void set_value(bool out, bool dout_din, bool d2out_din2) override;
  void no_decomposition(bool out, bool dout_din, bool d2out_din2);
  void voldev_decomposition(bool out, bool dout_din, bool d2out_din2);
  void spectral_decomposition(bool out, bool dout_din, bool d2out_din2);
 
  const IsotropicElasticityConverter _converter;

  const enum class DecompositionType : char { NONE, SPECTRAL, VOLDEV } _decomposition;
};
} // namespace neml2