shells/materials/porousPlasticity/PorousPlasticity.h

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/* -*- C++ -*- */
/*
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 *
 *                          Alejandro Mota and Fehmi Cirak
 *                        California Institute of Technology
 *                           (C) 2005 All Rights Reserved
 *
 * <LicenseText>
 *
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#ifndef POROUSPLASTICITY_H
#define POROUSPLASTICITY_H

#include "../MaterialBase.h"


namespace shells {

class PorousPlasticity : public MaterialBase {
private:
  PorousPlasticity(); // use createMaterial instead
  void computeMaterialParameters(double * history);
  
public:
  ~PorousPlasticity();
  
  void updateStress(double * const stress, 
                    double const * const gstrain, 
                    double const dtime = 0.0,
                    double * const internal=NULL,
                    double const * const gstrainPrv=NULL);     
  
  double density();  
  double estimatedElasticityConst();
  
  void initialization(double * history);

  static MaterialBase * createMaterial() {
    return new PorousPlasticity();
  }
  
private:

  static const int _numberMaterialParameters = 43;
  static const int _numberInternalVariables = 16;
  static const int _temperatureOffset = 3;
  static const int _plasticDefGradOffset = 5;

  double _materialParameters[ _numberMaterialParameters ];
  double _internalVariables[ _numberInternalVariables ];

  double _youngModulus;
  double _poissonRatio;
  double _yieldStress;
  double _referencePlasticStrain;
  double _referencePlasticStrainRate;
  double _rateSensitivityExponent;
  double _hardeningExponent;
  double _thermalSofteningCoefficient;
  double _meltingTemperature;
  double _referenceTemperature;
  double _thermalExpansionCoefficient;
  double _specificHeat;
  double _voidRadius;
  double _massDensity;
  double _voidDensity;
};

}


// inlined functions
inline double shells::PorousPlasticity::density()
{
    return _massDensity;
}

inline double shells::PorousPlasticity::estimatedElasticityConst()
{
    return _youngModulus;
}

inline void shells::PorousPlasticity::initialization(double * history) 
{
    computeMaterialParameters(history);

    return;
}

#endif // POROUSPLASTICITY_H

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