FEBio/FEPoroHolmesMow.h

#pragma once
#include "FEPoroElastic.h"

//-----------------------------------------------------------------------------
// This class implements a poroelastic material that has a strain-dependent
// permeability according to the constitutive relation of Holmes & Mow (JB 1990)

class FEPoroHolmesMow : public FEPoroElastic
{
public:
        FEPoroHolmesMow();
                
        virtual vec3d Flux(FEMaterialPoint& pt);
                
        virtual void Permeability(double k[3][3], FEMaterialPoint& pt);

        virtual tens4ds Tangent_Permeability(FEMaterialPoint& mp);

        void Init();
        
public:
        double  m_perm;                 
        double  m_phi0;                 
        double  m_M;                    
        double  m_alpha;                
        
        // declare as registered
        DECLARE_REGISTERED(FEPoroHolmesMow);
                
        // declare parameter list
        DECLARE_PARAMETER_LIST();
};