druckerPragerPlasticitySM.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 druckerpragerplasticitysm_h
#define druckerpragerplasticitysm_h

#include "floatarray.h"
#include "floatmatrix.h"

#include "../sm/Materials/structuralms.h"
#include "../sm/Materials/structuralmaterial.h"
#include "Materials/isolinearelasticmaterial.h"


#define _IFT_DruckerPragerPlasticitySM_Name "druckerprager"
#define _IFT_DruckerPragerPlasticitySM_iys "iys" 
#define _IFT_DruckerPragerPlasticitySM_alpha "alpha" 
#define _IFT_DruckerPragerPlasticitySM_alphapsi "alphapsi" 
#define _IFT_DruckerPragerPlasticitySM_ht "ht"
#define _IFT_DruckerPragerPlasticitySM_hm "hm"
#define _IFT_DruckerPragerPlasticitySM_kc "kc"
#define _IFT_DruckerPragerPlasticitySM_lys "lys"
#define _IFT_DruckerPragerPlasticitySM_yieldtol "yieldtol"
#define _IFT_DruckerPragerPlasticitySM_newtoniter "newtoniter"


namespace oofem {
class DruckerPragerPlasticitySMStatus : public StructuralMaterialStatus
{
public:
    enum state_flag_values { DP_Elastic, DP_Unloading, DP_Yielding, DP_Vertex };

protected:
    double volumetricPlasticStrain;
    double tempVolumetricPlasticStrain;

    FloatArray plasticStrainDeviator;
    FloatArray tempPlasticStrainDeviator;

    double kappa;
    double tempKappa;

    int state_flag;
    int temp_state_flag;

public:
    DruckerPragerPlasticitySMStatus(int n, Domain * d, GaussPoint * gp);

    virtual ~DruckerPragerPlasticitySMStatus();

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

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

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

    void  givePlasticStrainVector(FloatArray &answer) const
    {
        answer = plasticStrainDeviator;
        answer[0] += volumetricPlasticStrain;
        answer[1] += volumetricPlasticStrain;
        answer[2] += volumetricPlasticStrain;
    }
    const FloatArray &givePlasticStrainDeviator() const { return plasticStrainDeviator; }
    double giveVolumetricPlasticStrain() const { return volumetricPlasticStrain; }
    double giveKappa() const { return kappa; }
    int giveStateFlag() const { return state_flag; }

    void giveTempPlasticStrainVector(FloatArray &answer) const
    {
        answer = tempPlasticStrainDeviator;
        answer[0] += tempVolumetricPlasticStrain;
        answer[1] += tempVolumetricPlasticStrain;
        answer[2] += tempVolumetricPlasticStrain;
    }
    const FloatArray &giveTempPlasticStrainDeviator() const { return tempPlasticStrainDeviator; }
    double giveTempVolumetricPlasticStrain() const { return tempVolumetricPlasticStrain; }
    double giveTempKappa() const { return tempKappa; }
    int giveTempStateFlag() const { return temp_state_flag; }

    void letTempPlasticStrainDeviatorBe(const FloatArray &v) { tempPlasticStrainDeviator = v; }
    void letTempVolumetricPlasticStrainBe(double v) { tempVolumetricPlasticStrain = v; }
    void letTempKappaBe(double v) { tempKappa = v; }
    void letTempStateFlagBe(int v) { temp_state_flag = v; }
};

class DruckerPragerPlasticitySM : public StructuralMaterial
{
public:
    enum state_flag_values { DP_Elastic, DP_Unloading, DP_Yielding, DP_Vertex };

protected:
    int hardeningType;
    double kappaC;
    double hardeningModulus;
    double limitYieldStress;
    double initialYieldStress;
    double alpha;
    double alphaPsi;
    double kFactor;

    IsotropicLinearElasticMaterial *LEMaterial;

    double yieldTol;
    int newtonIter;

public:
    DruckerPragerPlasticitySM(int n, Domain * d);
    virtual ~DruckerPragerPlasticitySM();

    virtual IRResultType initializeFrom(InputRecord *ir);

    virtual const char *giveClassName() const { return "DruckerPragerPlasticitySM"; }
    virtual const char *giveInputRecordName() const { return _IFT_DruckerPragerPlasticitySM_Name; }

    virtual void giveRealStressVector_3d(FloatArray &answer,
                                      GaussPoint *gp,
                                      const FloatArray &strainVector,
                                      TimeStep *tStep);

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

    void performLocalStressReturn(GaussPoint *gp, const FloatArray &strain);
    bool checkForVertexCase(double eM, double gM, double kM, double trialStressJTwo, double volumetricStress, double tempKappa);
    void performRegularReturn(double eM, double gM, double kM, double trialStressJTwo, FloatArray &stressDeviator, double &volumetricStress, double &tempKappa);
    void performVertexReturn(double eM, double gM, double kM, double trialStressJTwo, FloatArray &stressDeviator, double &volumetricStress, double &tempKappa, double volumetricElasticTrialStrain, double kappa);
    double computeYieldValue(double meanStress,
                             double JTwo,
                             double kappa,
                             double eM) const;
    virtual double computeYieldStressInShear(double kappa, double eM) const;

    virtual double computeYieldStressPrime(double kappa, double eM) const;

    void giveRegAlgorithmicStiffMatrix(FloatMatrix &answer,
                                       MatResponseMode mode,
                                       GaussPoint *gp,
                                       TimeStep *tStep);
    void giveVertexAlgorithmicStiffMatrix(FloatMatrix &answer,
                                          MatResponseMode mode,
                                          GaussPoint *gp,
                                          TimeStep *tStep);

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

    virtual bool isCharacteristicMtrxSymmetric(MatResponseMode rMode) { return false; }

    virtual void giveThermalDilatationVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep)
    {
        LEMaterial->giveThermalDilatationVector(answer, gp, tStep);
    }

    virtual MaterialStatus *CreateStatus(GaussPoint *gp) const;

    virtual double predictRelativeComputationalCost(GaussPoint *gp);
    virtual double predictRelativeRedistributionCost(GaussPoint *gp) { return 1.0; }
};
} // end namespace oofem
#endif // druckerpragerplasticitysm_h