intmatelastic.h

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/*
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
#ifndef INTMATELASTIC_H_
#define INTMATELASTIC_H_
 
#include "structuralinterfacematerial.h"
#include "structuralinterfacematerialstatus.h"


#define _IFT_IntMatElastic_Name "intmatelastic"
#define _IFT_IntMatElastic_kn "k"
 
 
namespace oofem {

class IntMatElastic : public StructuralInterfaceMaterial
{
protected:
    double k = 0.;
 
public:
    IntMatElastic(int n, Domain * d);
 
    const char *giveClassName() const override { return "IntMatElastic"; }
    const char *giveInputRecordName() const override { return _IFT_IntMatElastic_Name; }
 
    FloatArrayF<3> giveFirstPKTraction_3d(const FloatArrayF<3> &jump, const FloatMatrixF<3,3> &F, GaussPoint *gp, TimeStep *tStep) const override;
 
    FloatMatrixF<3,3> give3dStiffnessMatrix_dTdj(MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const override;
 
    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
 
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override { return std::make_unique<StructuralInterfaceMaterialStatus>(gp); }
 
    bool hasAnalyticalTangentStiffness() const override { return true; }
};
 
} /* namespace oofem */
#endif /* INTMATELASTIC_H_ */