intmatbilinearcz.h

Go to the documentation of this file.

/*
 *
 *                 #####    #####   ######  ######  ###   ###
 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
 *            #####    #####   ##      ######  ##     ##
 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2013   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 INTMATBILINEARCZ_H_
#define INTMATBILINEARCZ_H_

#include "structuralinterfacematerial.h"
#include "structuralinterfacematerialstatus.h"


#define _IFT_IntMatBilinearCZ_Name "intmatbilinearcz"
#define _IFT_IntMatBilinearCZ_PenaltyStiffness "kn"
#define _IFT_IntMatBilinearCZ_g1c "g1c"
#define _IFT_IntMatBilinearCZ_g2c "g2c"
#define _IFT_IntMatBilinearCZ_mu "mu"
#define _IFT_IntMatBilinearCZ_gamma "gamma"
#define _IFT_IntMatBilinearCZ_sigf "sigf"
#define _IFT_IntMatBilinearCZ_semiexplicit "semiexplicit"


namespace oofem {
class IntMatBilinearCZStatus : public StructuralInterfaceMaterialStatus
{
public:
    IntMatBilinearCZStatus(int n, Domain * d, GaussPoint * g);
    virtual ~IntMatBilinearCZStatus();

    double mDamageNew, mDamageOld;

    FloatArray mTractionOld, mTractionNew;

    FloatArray mJumpOld, mJumpNew;

    double mPlastMultIncNew, mPlastMultIncOld;

    virtual const char *giveClassName() const { return "IntMatBilinearCZStatus"; }

    virtual void initTempStatus();
    virtual void updateYourself(TimeStep *tStep);

    virtual void copyStateVariables(const MaterialStatus &iStatus);
    virtual void addStateVariables(const MaterialStatus &iStatus);
};


class IntMatBilinearCZ : public StructuralInterfaceMaterial
{
public:
    IntMatBilinearCZ(int n, Domain * d);
    virtual ~IntMatBilinearCZ();

protected:
    double mPenaltyStiffness;
    double mGIc;   // fracture energy, mode 1
    double mGIIc;  // fracture energy, mode 2
    double mSigmaF;  // max stress

    double mMu;    // loading function parameter
    double mGamma; // loading function parameter

    bool mSemiExplicit; // If semi-explicit time integration should be used

    virtual int checkConsistency();

public:

    virtual int hasNonLinearBehaviour()   { return 1; }

    virtual const char *giveClassName() const { return "IntMatBilinearCZ"; }
    virtual const char *giveInputRecordName() const { return _IFT_IntMatBilinearCZ_Name; }


    virtual void giveFirstPKTraction_3d(FloatArray &answer, GaussPoint *gp, const FloatArray &jump,
                                        const FloatMatrix &F, TimeStep *tStep);

    // Dummy implementation, we must rely on numerical computation of the tangent.
    virtual void give3dStiffnessMatrix_dTdj(FloatMatrix &answer, MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep);

    virtual bool hasAnalyticalTangentStiffness() const { return false; }

private:
    // Help functions
    double computeYieldFunction(const double &iTractionNormal, const double &iTractionTang) const;
    void computeTraction(FloatArray &oT, const FloatArray &iTTrial, const double &iPlastMultInc) const;

public:
    virtual int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep);
    virtual IRResultType initializeFrom(InputRecord *ir);
    virtual void giveInputRecord(DynamicInputRecord &input);

    virtual MaterialStatus *CreateStatus(GaussPoint *gp) const { return new IntMatBilinearCZStatus(1, domain, gp); }
    virtual void printYourself();
};
} /* namespace oofem */
#endif /* INTMATBILINEARCZ_H_ */