simpleinterfacemat.h

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/*
 *
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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 library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef simpleinterfacemat_h
#define simpleinterfacemat_h
 
#include "sm/Materials/InterfaceMaterials/structuralinterfacematerial.h"
#include "sm/Materials/InterfaceMaterials/structuralinterfacematerialstatus.h"


#define _IFT_SimpleInterfaceMaterial_Name "simpleintermat"
#define _IFT_SimpleInterfaceMaterial_kn "kn"
#define _IFT_SimpleInterfaceMaterial_ks "ks"
#define _IFT_SimpleInterfaceMaterial_frictCoeff "fc"
#define _IFT_SimpleInterfaceMaterial_stiffCoeff "stiffcoeff"
#define _IFT_SimpleInterfaceMaterial_normalClearance "normalclearance"
#define _IFT_SimpleInterfaceMaterial_regularizedModel "regularized"
#define _IFT_SimpleInterfaceMaterial_regularizationCoeff "m"
 
namespace oofem {
class SimpleInterfaceMaterialStatus : public StructuralInterfaceMaterialStatus
{
protected:
    bool shearYieldingFlag = false;
    FloatArrayF<2> shearStressShift, tempShearStressShift;
 
public:
    SimpleInterfaceMaterialStatus(GaussPoint * g);
 
    void printOutputAt(FILE *file, TimeStep *tStep) const override;
 
    const char *giveClassName() const override { return "SimpleInterfaceMaterialStatus"; }
 
    void initTempStatus() override;
    void updateYourself(TimeStep *tStep) override;
 
    const FloatArrayF<2> &giveShearStressShift() const { return shearStressShift; }
    void setTempShearStressShift(const FloatArrayF<2> &newShearStressShift) { tempShearStressShift = newShearStressShift; }
    bool giveShearYieldingFlag() { return shearYieldingFlag; }
    void setShearYieldingFlag(bool sY) { shearYieldingFlag = sY; }
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
};
 

class SimpleInterfaceMaterial : public StructuralInterfaceMaterial
{
protected:
    double kn = 0., ks = 0.;
    double stiffCoeff = 0.;
    double frictCoeff = 0.;
    double normalClearance = 0.;
 
  bool regularizedModel = false;
  double m = 15.0;
  
public:
    SimpleInterfaceMaterial(int n, Domain * d);
 
    bool hasAnalyticalTangentStiffness() const override { return true; }
 
    const char *giveInputRecordName() const override { return _IFT_SimpleInterfaceMaterial_Name; }
    const char *giveClassName() const override { return "SimpleInterfaceMaterial"; }
 
    FloatArrayF<3> giveEngTraction_3d(const FloatArrayF<3> &jump, GaussPoint *gp, TimeStep *tStep) const override;
    FloatMatrixF<3,3> give3dStiffnessMatrix_Eng(MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const override;
 
    int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep) override;
 
    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
 
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override { return std::make_unique<SimpleInterfaceMaterialStatus>(gp); }
};
} // end namespace oofem
#endif // simpleinterfacemat_h