intmatbilinczelastic.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 IntMatBilinearCZElastic_h
#define IntMatBilinearCZElastic_h
 
#include "structuralinterfacematerial.h"
#include "structuralinterfacematerialstatus.h"


#define _IFT_IntMatBilinearCZElastic_Name "intmatbilinearczelastic"
#define _IFT_IntMatBilinearCZElastic_kn "kn"
#define _IFT_IntMatBilinearCZElastic_ks "ks"
#define _IFT_IntMatBilinearCZElastic_knc "knc"
#define _IFT_IntMatBilinearCZElastic_g1c "g1c"
#define _IFT_IntMatBilinearCZElastic_sigfn "sigfn"
#define _IFT_IntMatBilinearCZElastic_sigfs "sigfs"
 
namespace oofem {
class IntMatBilinearCZElasticStatus : public StructuralInterfaceMaterialStatus
{
public:
    IntMatBilinearCZElasticStatus(GaussPoint * g);
 
    double giveDamage() const override { return 0.0; } // no damage in this model
    void printOutputAt(FILE *file, TimeStep *tStep) const override;
 
    const char *giveClassName() const override { return "IntMatBilinearCZElasticStatus"; }
 
    void initTempStatus() override;
    void updateYourself(TimeStep *tStep) override;
 
    //void saveContext(DataStream &stream, ContextMode mode) override;
    //void restoreContext(DataStream &stream, ContextMode mode) override;
};
 

class IntMatBilinearCZElastic : public StructuralInterfaceMaterial
{
protected:
    double kn0 = 0.;
    double ks0 = 0.;
    double knc = 0.;   // stiffness in compression
    double GIc = 0.;
    double sigfn = 0.;
    double sigfs = 0.;
 
    double gn0 = 0.;   // normal jump at damage initiation
    double gs0 = 0.;   // shear jump at damage initiations
    double gnmax = 0.; // max normal jump
 
    double kn1 = 0.;   // slope during softening part
 
    int checkConsistency() override;
    void give3dInterfaceMaterialStiffnessMatrix(FloatMatrix &answer, MatResponseMode rMode,
                                                GaussPoint *gp, TimeStep *tStep);
public:
    IntMatBilinearCZElastic(int n, Domain * d);
 
    const char *giveClassName() const override { return "IntMatBilinearCZElastic"; }
    const char *giveInputRecordName() const override { return _IFT_IntMatBilinearCZElastic_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); }
    void printYourself() override;
    bool hasAnalyticalTangentStiffness() const override { return true; }
};
} // end namespace oofem
#endif // isointerfacedamage01_h