b3solidmat.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 b3solidmat_h
#define b3solidmat_h
 
#include "kelvinChM.h"


#define _IFT_B3SolidMaterial_Name "b3solidmat"
#define _IFT_B3SolidMaterial_emodulimode "emodulimode"
#define _IFT_B3SolidMaterial_microprestress "microprestress"
#define _IFT_B3SolidMaterial_c0 "c0"
#define _IFT_B3SolidMaterial_c1 "c1"
#define _IFT_B3SolidMaterial_ksh "ksh"
#define _IFT_B3SolidMaterial_finalhumidity "finalhumidity"
#define _IFT_B3SolidMaterial_initialhumidity "initialhumidity"
#define _IFT_B3SolidMaterial_lambda0 "lambda0"
 
namespace oofem {
class B3SolidMaterialStatus : public KelvinChainMaterialStatus
{
protected:
    double microprestress_old = 0.;
    double microprestress_new = 0.;
 
public:
    B3SolidMaterialStatus(GaussPoint *g, int nunits);
 
    void updateYourself(TimeStep *tStep) override;
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    double giveMPS() const { return microprestress_old; }
    void setMPS(double src) { microprestress_new = src; }
 
    // definition
    const char *giveClassName() const override { return "B3SolidMaterialStatus"; }
};
 

class B3SolidMaterial : public KelvinChainMaterial
{
protected:
    double t0 = 0.;
    double w = 0., E28 = 0., q1 = 0., q2 = 0., q3 = 0., q4 = 0., q5 = 0.; // predicted data

    double lambda0 = 0.;
 
    enum b3ShModeType { B3_NoShrinkage, B3_AverageShrinkage, B3_PointShrinkage } shMode = B3_NoShrinkage;
    double EpsSinf = 0., kt = 0., ks = 0., vs = 0., hum = 0.;
    double es0 = 0., r = 0., rprime = 0., at = 0.;
    // Additional parameters for sorption isotherm (used to compute relative humidity from water content)
    double w_h = 0.;    
    double n = 0.;      
    double a = 0.;      
    mutable double EspringVal = 0.; 
    int EmoduliMode = 0;
    int MicroPrestress = 0;
    double c0 = 0.;  
    double c1 = 0.;  
    double tS0 = 0.; 
    double kSh = 0.; 
 
 
public:
    B3SolidMaterial(int n, Domain *d) : KelvinChainMaterial(n, d) {}
 
    void giveRealStressVector(FloatArray &answer, GaussPoint *gp,
                              const FloatArray &reducedStrain, TimeStep *tStep) const override;
 
    void giveShrinkageStrainVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep, ValueModeType mode) const override;
 
    const char *giveClassName() const override { return "B3SolidMaterial"; }
    const char *giveInputRecordName() const override { return _IFT_B3SolidMaterial_Name; }
    void initializeFrom(InputRecord &ir) override;
 
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override;

    double computeCreepFunction(double t, double t_prime, GaussPoint *gp, TimeStep *tStep) const override;
 
protected:
    bool hasIncrementalShrinkageFormulation() const override { return true; }
 
    void computeTotalAverageShrinkageStrainVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep) const;

    void computePointShrinkageStrainVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep) const;
 
    void predictParametersFrom(double, double, double, double, double, double, double);

    double computeSolidifiedVolume(TimeStep *tStep) const;

    double computeFlowTermViscosity(GaussPoint *gp, TimeStep *tStep) const;
 
    double inverse_sorption_isotherm(double w) const;

    FloatArray computeCharCoefficients(double tPrime, GaussPoint *gp, TimeStep *tStep) const override;

    void updateEparModuli(double tPrime, GaussPoint *gp, TimeStep *tStep) const override;
 
    void computeCharTimes() override;
 
    double giveEModulus(GaussPoint *gp, TimeStep *tStep) const override;
 
    void giveEigenStrainVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep, ValueModeType mode) const override;

    double computeMicroPrestress(GaussPoint *gp, TimeStep *tStep, int option) const;

    double giveInitMicroPrestress() const;

    double giveHumidity(GaussPoint *gp, TimeStep *tStep) const;

    double giveHumidityIncrement(GaussPoint *gp, TimeStep *tStep) const;
};
} // end namespace oofem
#endif // b3solidmat_h