druckerpragercutmat.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
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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 druckerpragercatmat_h
#define druckerpragercatmat_h
 
#include "sm/Materials/ConcreteMaterials/mplasticmaterial2.h"


#define _IFT_DruckerPragerCutMat_Name "druckerpragercutmat"
#define _IFT_DruckerPragerCutMat_alpha "alpha" 
#define _IFT_DruckerPragerCutMat_alphapsi "alphapsi" 
#define _IFT_DruckerPragerCutMat_h "h" 
#define _IFT_DruckerPragerCutMat_sigT "sigt" 
#define _IFT_DruckerPragerCutMat_omegaCrit "omega_crit" 
#define _IFT_DruckerPragerCutMat_a "a" 
#define _IFT_DruckerPragerCutMat_yieldTol "yieldtol" 
#define _IFT_DruckerPragerCutMat_newtonIter "newtoniter" 
#define _IFT_DruckerPragerCutMat_tau0 "tau0" 
 
namespace oofem {
class GaussPoint;
class Domain;

class DruckerPragerCutMat : public MPlasticMaterial2
{
protected:
    // Reference to the basic elastic material.
    //LinearElasticMaterial *linearElasticMaterial;

    double G = 0.;

    double K = 0.;

    double H = 0.;

    double sigT = 0.;

    double tau0 = 0.;

    double alpha = 0.;

    double alphaPsi = 0.;

    double yieldTol = 0.;

    int newtonIter = 30;

    double omegaCrit = 0.;

    double a = 0.;
 
public:
    DruckerPragerCutMat(int n, Domain * d);
 
    bool hasMaterialModeCapability(MaterialMode mode) const override;
    
    bool hasCastingTimeSupport() const override { return true; }
 
    void initializeFrom(InputRecord &ir) override;
 
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override;
 
    bool isCharacteristicMtrxSymmetric(MatResponseMode rMode) const override { return false; }
 
    const char *giveClassName() const override { return "DruckerPragerCutMat"; }
    const char *giveInputRecordName() const override { return _IFT_DruckerPragerCutMat_Name; }

    LinearElasticMaterial *giveLinearElasticMaterial() { return linearElasticMaterial; }
 
    int giveSizeOfFullHardeningVarsVector() const override { return 4; }
    int giveSizeOfReducedHardeningVarsVector(GaussPoint *) const override { return 4; } //cummulative strain = one per each surface
 
protected:
    int giveMaxNumberOfActiveYieldConds(GaussPoint *gp) const override { return 3; } //normally one less than number of all conditions
 
    double computeYieldValueAt(GaussPoint *gp, int isurf, const FloatArray &stressVector, const FloatArray &strainSpaceHardeningVariables) const override;
 
    void computeStressGradientVector(FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, const FloatArray &stressVector, const FloatArray &stressSpaceHardeningVars) const override;

    void computeReducedSSGradientMatrix(FloatMatrix &gradientMatrix,  int isurf, GaussPoint *gp, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables) const override;
 
    void computeReducedElasticModuli(FloatMatrix &answer, GaussPoint *gp, TimeStep *tStep) const override;

    int hasHardening() const override { return 1; }

    void computeStrainHardeningVarsIncrement(FloatArray &answer, GaussPoint *gp, const FloatArray &stress, const FloatArray &dlambda, const FloatArray &dplasticStrain, const IntArray &activeConditionMap) const override;

    void computeKGradientVector(FloatArray &answer, functType ftype, int isurf, GaussPoint *gp, FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables) const override;

    void computeReducedSKGradientMatrix(FloatMatrix &gradientMatrix, int isurf, GaussPoint *gp, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVariables) const override;

    void computeReducedHardeningVarsSigmaGradient(FloatMatrix &answer, GaussPoint *gp, const IntArray &activeConditionMap, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVars, const FloatArray &dlambda) const override;

    void computeReducedHardeningVarsLamGradient(FloatMatrix &answer, GaussPoint *gp, int actSurf, const IntArray &activeConditionMap, const FloatArray &fullStressVector, const FloatArray &strainSpaceHardeningVars, const FloatArray &dlambda) const override;
 
    int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep) override;
};
} // end namespace oofem
#endif // druckerpragercatmat_h