rankinemat.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
 *            #####    #####   ##      ######  ##     ##
 *
 *
 *             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 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 rankinemat_h
#define rankinemat_h

#include "../sm/Materials/structuralmaterial.h"
#include "../sm/Materials/structuralms.h"
#include "linearelasticmaterial.h"
#include "dictionary.h"
#include "floatarray.h"
#include "floatmatrix.h"

// this turns on or off a bunch of internal variables
// that allow tracking the distribution of dissipated energy
// (can be turned off if such information is not needed)
#define keep_track_of_dissipated_energy
//#undefine keep_track_of_dissipated_energy


#define _IFT_RankineMat_Name "rankmat"
#define _IFT_RankineMat_sig0 "sig0"
#define _IFT_RankineMat_h "h"
#define _IFT_RankineMat_a "a"
#define _IFT_RankineMat_plasthardtype "plasthardtype"
#define _IFT_RankineMat_delsigy "delsigy"
#define _IFT_RankineMat_yieldtol "yieldtol"
#define _IFT_RankineMat_gf "gf"
#define _IFT_RankineMat_ep "ep"
#define _IFT_RankineMat_damlaw "damlaw"
#define _IFT_RankineMat_param1 "param1"
#define _IFT_RankineMat_param2 "param2"
#define _IFT_RankineMat_param3 "param3"
#define _IFT_RankineMat_param4 "param4"
#define _IFT_RankineMat_param5 "param5"


namespace oofem {
class RankineMatStatus;

class RankineMat : public StructuralMaterial
{
protected:
    LinearElasticMaterial *linearElasticMaterial;

    double E;

    double nu;

    double H0;

    int plasthardtype;

    double delSigY;

    double sig0;

    double yieldtol;

    double a;

    double ep;

    double md;

    int damlaw;

    double param1;

    double param2;

    double param3;

    double param4;

    double param5;


public:
    RankineMat(int n, Domain * d);
    virtual ~RankineMat() { }

    double evalYieldFunction(const FloatArray &sigPrinc, const double kappa);
    double evalYieldStress(const double kappa);
    double evalPlasticModulus(const double kappa);
    void performPlasticityReturn(GaussPoint *gp, const FloatArray &totalStrain);
    double computeDamage(GaussPoint *gp, TimeStep *tStep);
    double computeDamageParam(double tempKappa);
    double computeDamageParamPrime(double tempKappa);
    virtual void computeCumPlastStrain(double &kappa, GaussPoint *gp, TimeStep *tStep);

    virtual int hasMaterialModeCapability(MaterialMode mode);

    virtual IRResultType initializeFrom(InputRecord *ir);

    // identification and auxiliary functions
    virtual int hasNonLinearBehaviour() { return 1; }
    virtual const char *giveInputRecordName() const { return _IFT_RankineMat_Name; }
    virtual const char *giveClassName() const { return "RankineMat"; }

    LinearElasticMaterial *giveLinearElasticMaterial() { return linearElasticMaterial; }

    virtual bool isCharacteristicMtrxSymmetric(MatResponseMode rMode) { return ( a == 0. ); }

    virtual MaterialStatus *CreateStatus(GaussPoint *gp) const;

    virtual void giveRealStressVector_PlaneStress(FloatArray &answer, GaussPoint *gp,
                                                  const FloatArray &reducesStrain, TimeStep *tStep);
    virtual void  giveRealStressVector_1d(FloatArray &answer, GaussPoint *gp, const FloatArray &totalStrain, TimeStep *tStep);
protected:
    virtual void give1dStressStiffMtrx(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep);
    virtual void givePlaneStressStiffMtrx(FloatMatrix &answer,
                                          MatResponseMode mode,
                                          GaussPoint *gp,
                                          TimeStep *tStep);
    void evaluatePlaneStressStiffMtrx(FloatMatrix &answer,
                                      MatResponseMode mode,
                                      GaussPoint *gp,
                                      TimeStep *tStep, double gprime);

    void computeEta(FloatArray &answer, RankineMatStatus *status);

    virtual int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep);
};

//=============================================================================


class RankineMatStatus : public StructuralMaterialStatus
{
protected:
    FloatArray plasticStrain;

    FloatArray tempPlasticStrain;

    FloatArray effStress;

    FloatArray tempEffStress;

    double kappa;

    double tempKappa;

    double dKappa1, dKappa2;

    double damage;

    double tempDamage;

    double tanG;

#ifdef keep_track_of_dissipated_energy
    double stressWork;
    double tempStressWork;
    double dissWork;
    double tempDissWork;
#endif

public:
    RankineMatStatus(int n, Domain * d, GaussPoint * g);
    virtual ~RankineMatStatus();

    const FloatArray & givePlasticStrain() const { return plasticStrain; }

    double giveDamage() { return damage; }
    double giveTempDamage() { return tempDamage; }

    double giveCumulativePlasticStrain() { return kappa; }
    double giveTempCumulativePlasticStrain() { return tempKappa; }

    double giveDKappa(int i)
    {
        if ( i == 1 ) {
            return dKappa1;
        } else {
            return dKappa2;
        }
    }

    double giveTangentShearStiffness()
    { return tanG; }

    const FloatArray &giveEffectiveStress() const { return effStress; }
    const FloatArray &giveTempEffectiveStress() const { return tempEffStress; }

    void letTempPlasticStrainBe(FloatArray values) { tempPlasticStrain = std :: move(values); }

    void letEffectiveStressBe(FloatArray values) { effStress = std :: move(values); }

    void letTempEffectiveStressBe(FloatArray values) { tempEffStress = std :: move(values); }

    void setTempCumulativePlasticStrain(double value) { tempKappa = value; }

    void setDKappa(double val1, double val2) {
        dKappa1 = val1;
        dKappa2 = val2;
    }

    void setTempDamage(double value) { tempDamage = value; }

    void setTangentShearStiffness(double value) { tanG = value; }

    const FloatArray &givePlasDef() { return plasticStrain; }

    virtual void printOutputAt(FILE *file, TimeStep *tStep);

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

    virtual contextIOResultType saveContext(DataStream &stream, ContextMode mode, void *obj = NULL);
    virtual contextIOResultType restoreContext(DataStream &stream, ContextMode mode, void *obj = NULL);

#ifdef keep_track_of_dissipated_energy
    double giveStressWork() { return stressWork; }
    double giveTempStressWork() { return tempStressWork; }
    void setTempStressWork(double w) { tempStressWork = w; }
    double giveDissWork() { return dissWork; }
    double giveTempDissWork() { return tempDissWork; }
    void setTempDissWork(double w) { tempDissWork = w; }
    void computeWork_PlaneStress(GaussPoint *gp, double gf);
    void computeWork_1d(GaussPoint *gp, double gf);
#endif

    virtual const char *giveClassName() const { return "RankineMatStatus"; }
};
} // end namespace oofem
#endif // rankinemat_h