FEBio/FEOgdenUnconstrained.h

#pragma once
#include "FEMaterial.h"
#include "FEUncoupledMaterial.h"

class FEOgdenUnconstrained : public FEElasticMaterial
        {
        public:
                enum { MAX_TERMS = 6 };
        public:
                FEOgdenUnconstrained();
                
                void Init();
                
                mat3ds Stress(FEMaterialPoint& pt);
                
                tens4ds Tangent(FEMaterialPoint& pt);
                
                double BulkModulus() { return 0;}
                
        protected:
                void EigenValues(mat3ds& A, double l[3], vec3d r[3], const double eps = 0);
                double  m_eps;
                
        public:
                double  m_c[MAX_TERMS];         
                double  m_m[MAX_TERMS];         
                double  m_p;                            
                
                DECLARE_REGISTERED(FEOgdenUnconstrained);
                
                DECLARE_PARAMETER_LIST();
        };