binghamfluid2.h

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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 binghamfluid2_h
#define binghamfluid2_h
 
#include "fm/Materials/fluiddynamicmaterial.h"
#include "floatarray.h"
#include "floatmatrix.h"
#include "matconst.h"
#include "matstatus.h"


#define _IFT_BinghamFluidMaterial2_Name "binghamfluid"
#define _IFT_BinghamFluidMaterial2_mu0 "mu0"
#define _IFT_BinghamFluidMaterial2_tau0 "tau0"
#define _IFT_BinghamFluidMaterial2_muinf "muinf"
#define _IFT_BinghamFluidMaterial2_stressGrowthRate "stressgrowthrate"
 
namespace oofem {
 
#define BINGHAM_DEFAULT_STRESS_GROWTH_RATE 400.0

class BinghamFluidMaterial2Status : public FluidDynamicMaterialStatus
{
protected:
    double devStrainMagnitude = 0., temp_devStrainMagnitude = 0.;
    double devStressMagnitude = 0., temp_devStressMagnitude = 0.;
    FloatArrayF<6> temp_deviatoricStrainVector;
 
public:
    BinghamFluidMaterial2Status(GaussPoint * g);
 
    void printOutputAt(FILE *file, TimeStep *tStep) const override;
 
    void initTempStatus() override;
    void updateYourself(TimeStep *tStep) override;
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    double giveTempDevStressMagnitude() const { return temp_devStressMagnitude; }
    double giveTempDevStrainMagnitude() const { return temp_devStrainMagnitude; }
    double giveDevStressMagnitude() const { return devStressMagnitude; }
    double giveDevStrainMagnitude() const { return devStrainMagnitude; }
 
    void letTempDevStrainMagnitudeBe(double _val) { temp_devStrainMagnitude = _val; }
    void letTempDevStressMagnitudeBe(double _val) { temp_devStressMagnitude = _val; }
 
    const FloatArrayF<6> &giveTempDeviatoricStrainVector() const { return temp_deviatoricStrainVector; }
    void letTempDeviatoricStrainVectorBe(const FloatArrayF<6> &v) { temp_deviatoricStrainVector = v; }
 
    const char *giveClassName() const override { return "BinghamFluidMaterialStatus"; }
};
 

class BinghamFluidMaterial2 : public FluidDynamicMaterial
{
protected:
    double mu_0 = 0.;
    double tau_0 = 0.;
    double tau_c = 0.;
    double mu_inf = 1.e6;
    double stressGrowthRate = BINGHAM_DEFAULT_STRESS_GROWTH_RATE;
 
public:
    BinghamFluidMaterial2(int n, Domain * d);
 
    FloatArrayF<6> computeDeviatoricStress3D(const FloatArrayF<6> &eps, GaussPoint *gp, TimeStep *tStep) const override;
 
    FloatMatrixF<6,6> computeTangent3D(MatResponseMode, GaussPoint *gp, TimeStep *tStep) const override;
 
    double giveEffectiveViscosity(GaussPoint *gp, TimeStep *tStep) const override;
    double give(int aProperty, GaussPoint *gp) const override;
    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
    const char *giveClassName() const override { return "BinghamFluidMaterial2"; }
    const char *giveInputRecordName() const override { return _IFT_BinghamFluidMaterial2_Name; }
    int checkConsistency() override;
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override;
 
protected:
    double computeActualViscosity(double tau, double shearRate) const;
    static double computeDevStrainMagnitude(const FloatArrayF<6> &epsd);
    static double computeDevStressMagnitude(const FloatArrayF<6> &sigd);
    static FloatArrayF<6> computeDeviatoricStrain(const FloatArrayF<6> &eps);
    static FloatArrayF<6> computeDeviatoricStress(const FloatArrayF<6> &deps, double nu);
 
#if 0
    void __debug(GaussPoint *gp, TimeStep *tStep);
#endif
};
} // end namespace oofem
#endif // binghamfluid2_h