intmatphasefield.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 intmatphasefield
#define intmatphasefield
 
#include "structuralinterfacematerialphf.h"
#include "structuralinterfacematerialstatus.h"


#define _IFT_IntMatPhaseField_Name "intmatphf"
#define _IFT_IntMatPhaseField_kn "k"
#define _IFT_IntMatPhaseField_gc "gc"
 
namespace oofem {

class IntMatPhaseFieldStatus : public StructuralInterfaceMaterialStatus
{
public:
    IntMatPhaseFieldStatus(GaussPoint * g);

    double tempDamage = 0.;
    double tempDrivingEnergy = 0.;
    double drivingEnergy = 0.;
 
    double giveDamage() const override { return tempDamage; }
 
    double giveTempDrivingEnergy() const { return tempDrivingEnergy; }
    double giveDrivingEnergy() const { return drivingEnergy; }
    void letTempDrivingEnergyBe(double val) { this->tempDrivingEnergy = val; }
 
    const char *giveClassName() const override { return "IntMatPhaseFieldStatus"; }
 
    void initTempStatus() override;
    void updateYourself(TimeStep *tStep) override;
};
 
 
class IntMatPhaseField : public StructuralInterfaceMaterialPhF
{
protected:
    double k = 0.;
    double Gc = 0.;
 
public:
    IntMatPhaseField(int n, Domain * d);
 
    bool hasMaterialModeCapability(MaterialMode mode) const override;
    const char *giveClassName() const override { return "IntMatPhaseField"; }
    const char *giveInputRecordName() const override { return _IFT_IntMatPhaseField_Name; }
 
    FloatArrayF<3> giveEngTraction_3d(const FloatArrayF<3> &jump, double damage, GaussPoint *gp, TimeStep *tStep) const override;
    FloatMatrixF<3,3> give3dStiffnessMatrix_Eng(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const override;
    void giveTangents(FloatMatrix &jj, FloatMatrix &jd, FloatMatrix &dj, FloatMatrix &dd, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const override;
 
    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
 
    MaterialStatus *CreateStatus(GaussPoint *gp) const override { return new IntMatPhaseFieldStatus(gp); }; 
 
    bool hasAnalyticalTangentStiffness() const override { return true; };
 
    double giveDrivingForce(GaussPoint *gp) const override;
    double giveDrivingForcePrime(GaussPoint *gp) const override;
    //double compute_fPrime(const double d);
    double compute_g(double d) const;
    double compute_gPrime(double d) const;
    double compute_gBis(double d) const;
};
 
} /* namespace oofem */
#endif