druckerPragerPlasticitySM.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 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 "sm/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 = 0.;
    double tempVolumetricPlasticStrain = 0.;

    FloatArrayF<6> plasticStrainDeviator;
    FloatArrayF<6> tempPlasticStrainDeviator;

    double kappa = 0.;
    double tempKappa = 0.;

    int state_flag = DruckerPragerPlasticitySMStatus :: DP_Elastic;
    int temp_state_flag = DruckerPragerPlasticitySMStatus :: DP_Elastic;
 
public:
    DruckerPragerPlasticitySMStatus(GaussPoint * gp);
 
    void initTempStatus() override;
    void updateYourself(TimeStep *tStep) override;
    void printOutputAt(FILE *file, TimeStep *tStep) const override;
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    const char *giveClassName() const override { return "DruckerPragerPlasticitySMStatus"; }

    FloatArrayF<6> givePlasticStrainVector() const
    {
        auto plasticStrain = plasticStrainDeviator;
        plasticStrain[0] += volumetricPlasticStrain;
        plasticStrain[1] += volumetricPlasticStrain;
        plasticStrain[2] += volumetricPlasticStrain;
        return plasticStrain;
    }

    const FloatArrayF<6> &givePlasticStrainDeviator() const { return plasticStrainDeviator; }
    double giveVolumetricPlasticStrain() const { return volumetricPlasticStrain; }
    double giveKappa() const { return kappa; }
    int giveStateFlag() const { return state_flag; }

    FloatArrayF<6> giveTempPlasticStrainVector() const
    {
        auto plasticStrain = tempPlasticStrainDeviator;
        plasticStrain[0] += tempVolumetricPlasticStrain;
        plasticStrain[1] += tempVolumetricPlasticStrain;
        plasticStrain[2] += tempVolumetricPlasticStrain;
        return plasticStrain;
    }

    const FloatArrayF<6> &giveTempPlasticStrainDeviator() const { return tempPlasticStrainDeviator; }
    double giveTempVolumetricPlasticStrain() const { return tempVolumetricPlasticStrain; }
    double giveTempKappa() const { return tempKappa; }
    int giveTempStateFlag() const { return temp_state_flag; }

    void letTempPlasticStrainDeviatorBe(const FloatArrayF<6> &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 = 1;
    double kappaC = 0.;
    double hardeningModulus = 0.;
    double limitYieldStress = 0.;
    double initialYieldStress = 0.;
    double alpha = 0.;
    double alphaPsi = 0.;
    double kFactor = 0.;

    IsotropicLinearElasticMaterial LEMaterial;

    double yieldTol = 0.;
    int newtonIter = 0;
 
public:
    DruckerPragerPlasticitySM(int n, Domain * d);
 
    void initializeFrom(InputRecord &ir) override;
 
    const char *giveClassName() const override { return "DruckerPragerPlasticitySM"; }
    const char *giveInputRecordName() const override { return _IFT_DruckerPragerPlasticitySM_Name; }
 
    FloatArrayF<6> giveRealStressVector_3d(const FloatArrayF<6> &strain, GaussPoint *gp,
                                           TimeStep *tStep) const override;
 
    FloatMatrixF<6,6> give3dMaterialStiffnessMatrix(MatResponseMode mmode, GaussPoint *gp, TimeStep *tStep) const override;

    void performLocalStressReturn(GaussPoint *gp, const FloatArrayF<6> &strain) const;
    bool checkForVertexCase(double eM, double gM, double kM, double trialStressJTwo, double volumetricStress, double tempKappa) const;
    void performRegularReturn(double eM, double gM, double kM, double trialStressJTwo, FloatArrayF<6> &stressDeviator, double &volumetricStress, double &tempKappa) const;
    void performVertexReturn(double eM, double gM, double kM, double trialStressJTwo, FloatArrayF<6> &stressDeviator, double &volumetricStress, double &tempKappa, double volumetricElasticTrialStrain, double kappa) const;
    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;

    FloatMatrixF<6,6> giveRegAlgorithmicStiffMatrix(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const;
    FloatMatrixF<6,6> giveVertexAlgorithmicStiffMatrix(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const;
 
    int giveIPValue(FloatArray &answer,
                    GaussPoint *gp,
                    InternalStateType type,
                    TimeStep *tStep) override;
 
    bool isCharacteristicMtrxSymmetric(MatResponseMode rMode) const override { return false; }
 
    FloatArrayF<6> giveThermalDilatationVector(GaussPoint *gp, TimeStep *tStep) const override
    {
        return LEMaterial.giveThermalDilatationVector(gp, tStep);
    }
 
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override;
 
    double predictRelativeComputationalCost(GaussPoint *gp) override;
    double predictRelativeRedistributionCost(GaussPoint *gp) override { return 1.0; }
};
} // end namespace oofem
#endif // druckerpragerplasticitysm_h