AbstractIsotropicIncompressibleMaterialLaw.hpp

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*/


#ifndef ABSTRACTISOTROPICINCOMPRESSIBLEMATERIALLAW_HPP_
#define ABSTRACTISOTROPICINCOMPRESSIBLEMATERIALLAW_HPP_

#include "AbstractIncompressibleMaterialLaw.hpp"

template<unsigned DIM>
class AbstractIsotropicIncompressibleMaterialLaw : public AbstractIncompressibleMaterialLaw<DIM>
{
protected:

    virtual double Get_dW_dI1(double I1, double I2)=0;

    virtual double Get_dW_dI2(double I1, double I2)=0;

    virtual double Get_d2W_dI1(double I1, double I2)=0;

    virtual double Get_d2W_dI2(double I1, double I2)=0;

    virtual double Get_d2W_dI1I2(double I1, double I2)=0;

public:

    void ComputeStressAndStressDerivative(c_matrix<double,DIM,DIM>& rC,
                                          c_matrix<double,DIM,DIM>& rInvC,
                                          double                    pressure,
                                          c_matrix<double,DIM,DIM>& rT,
                                          FourthOrderTensor<DIM,DIM,DIM,DIM>&   rDTdE,
                                          bool                      computeDTdE);

    virtual ~AbstractIsotropicIncompressibleMaterialLaw();

    double GetZeroStrainPressure();
};

#endif /*ABSTRACTISOTROPICINCOMPRESSIBLEMATERIALLAW_HPP_*/