perfectlyplasticmaterial.h

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/*
 *
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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 perfectlyplasticmaterial_h
#define perfectlyplasticmaterial_h

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

namespace oofem {
class PerfectlyPlasticMaterialStatus : public StructuralMaterialStatus
{
protected:
    FloatArray plasticStrainVector; // reduced form to save memory
    FloatArray plasticStrainIncrementVector;
    int yield_flag;
    int temp_yield_flag;

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

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

    int setTempYieldFlag(int i) { return temp_yield_flag = i; }
    int giveTempYieldFlag() { return temp_yield_flag; }
    int giveYieldFlag() { return yield_flag; }

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

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

    const FloatArray &givePlasticStrainVector() const { return plasticStrainVector; }
    const FloatArray &givePlasticStrainIncrementVector() const { return plasticStrainIncrementVector; }
    void letPlasticStrainVectorBe(FloatArray v) { plasticStrainVector = std :: move(v); }
    void letPlasticStrainIncrementVectorBe(FloatArray v) { plasticStrainIncrementVector = std :: move(v); }

    // definition
    virtual const char *giveClassName() const { return "PerfectlyPlasticMaterialStatus"; }
};

class PerfectlyPlasticMaterial : public StructuralMaterial
{
protected:
    int yieldCriteria;
    int loadingCriteria;
    LinearElasticMaterial *linearElasticMaterial;

public:

    PerfectlyPlasticMaterial(int n, Domain * d) : StructuralMaterial(n, d)
    {
        yieldCriteria = 0;
        loadingCriteria = 0;
        linearElasticMaterial = NULL;
    }

    virtual ~PerfectlyPlasticMaterial() {
        delete linearElasticMaterial;
    }

    virtual void giveRealStressVector(FloatArray &answer, GaussPoint *gp,
                                      const FloatArray &reducedStrain, TimeStep *tStep);

    virtual void giveRealStressVector_3d(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
    { this->giveRealStressVector(answer, gp, reducedE, tStep); }
    virtual void giveRealStressVector_PlaneStrain(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
    { this->giveRealStressVector(answer, gp, reducedE, tStep); }
    virtual void giveRealStressVector_PlaneStress(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
    { this->giveRealStressVector(answer, gp, reducedE, tStep); }
    virtual void giveRealStressVector_1d(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
    { this->giveRealStressVector(answer, gp, reducedE, tStep); }
    virtual void giveRealStressVector_2dBeamLayer(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
    { this->giveRealStressVector(answer, gp, reducedE, tStep); }
    virtual void giveRealStressVector_PlateLayer(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedE, TimeStep *tStep)
    { this->giveRealStressVector(answer, gp, reducedE, tStep); }

    // can be moved to parent classes
    virtual void updateIfFailure(GaussPoint *gp,
                                 FloatArray *stressVector3d,
                                 FloatArray *PlasticStrainVector3d) { }

    // identification and auxiliary functions
    virtual int hasNonLinearBehaviour() { return 1; }
    virtual int hasMaterialModeCapability(MaterialMode mode);
    virtual const char *giveClassName() const { return "PerfectlyPlasticMaterial"; }
    virtual IRResultType initializeFrom(InputRecord *ir);
    LinearElasticMaterial *giveLinearElasticMaterial() { return linearElasticMaterial; }

    virtual double give(int aProperty, GaussPoint *gp);

    virtual void give3dMaterialStiffnessMatrix(FloatMatrix &answer,
                                               MatResponseMode mode,
                                               GaussPoint *gp,
                                               TimeStep *tStep);

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

protected:
    // two functions used to initialize and updating temporary variables in
    // gps status. These variables are used to control process, when
    // we try to find equilibrium state

    virtual void giveMaterialStiffnessMatrix(FloatMatrix &answer,
                                             MatResponseMode mode, GaussPoint *gp,
                                             TimeStep *tStep);
    virtual void giveEffectiveMaterialStiffnessMatrix(FloatMatrix &answer,
                                                      MatResponseMode mode, GaussPoint *gp,
                                                      TimeStep *tStep);

    virtual void givePlaneStressStiffMtrx(FloatMatrix &answer,
                                          MatResponseMode mode,
                                          GaussPoint *gp,
                                          TimeStep *tStep);
    virtual void givePlaneStrainStiffMtrx(FloatMatrix &answer,
                                          MatResponseMode mode,
                                          GaussPoint *gp,
                                          TimeStep *tStep);
    virtual void give1dStressStiffMtrx(FloatMatrix &answer,
                                       MatResponseMode mode,
                                       GaussPoint *gp,
                                       TimeStep *tStep);
    virtual void give2dBeamLayerStiffMtrx(FloatMatrix &answer,
                                          MatResponseMode mode,
                                          GaussPoint *gp,
                                          TimeStep *tStep);
    virtual void givePlateLayerStiffMtrx(FloatMatrix &answer,
                                         MatResponseMode mode,
                                         GaussPoint *gp,
                                         TimeStep *tStep);

    void computeTrialStressIncrement(FloatArray &answer, GaussPoint *gp,
                                     const FloatArray &strainIncrement, TimeStep *tStep);
    void computePlasticStiffnessAt(FloatMatrix &answer,
                                   GaussPoint *gp,
                                   FloatArray *currentStressVector,
                                   FloatArray *currentPlasticStrainVector,
                                   FloatArray *strainIncrement3d,
                                   TimeStep *tStep,
                                   double &lambda);

    FloatArray *GiveStressCorrectionBackToYieldSurface(GaussPoint *gp,
                                                       FloatArray *stressVector3d,
                                                       FloatArray *plasticVector3d);
    //
    // yield(YC-like functions) and loading(LC-like functions) criteria specific section
    //

    virtual double computeYCValueAt(GaussPoint *gp, FloatArray *, FloatArray *) { return -1.0; }
    virtual FloatArray *GiveYCStressGradient(GaussPoint *gp, FloatArray *, FloatArray *) { return NULL; }
    virtual FloatArray *GiveLCStressGradient(GaussPoint *gp, FloatArray *, FloatArray *) { return NULL; }
    virtual FloatArray *GiveYCPlasticStrainGradient(GaussPoint *gp, FloatArray *, FloatArray *) { return NULL; }
    virtual FloatArray *GiveLCPlasticStrainGradient(GaussPoint *gp, FloatArray *, FloatArray *) { return NULL; }
    //virtual FloatArray* GiveHardeningGradient (GaussPoint *gp,FloatArray *,FloatArray *) {return NULL;}
    virtual void updateTempYC(GaussPoint *gp, FloatArray *, FloatArray *) { }
    virtual void updateTempLC(GaussPoint *gp, FloatArray *, FloatArray *) { }
    //virtual int updateYieldStatus(GaussPoint* gp, FloatArray* strainIncrementIn3d);
};
} // end namespace oofem
#endif // perfectlyplasticmaterial_h