binghamfluid2.h

Go to the documentation of this file.

/*
 *
 *                 #####    #####   ######  ######  ###   ###
 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
 *            #####    #####   ##      ######  ##     ##
 *
 *
 *             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 binghamfluid2_h
#define binghamfluid2_h

#include "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 {
class GaussPoint;

#define BINGHAM_DEFAULT_STRESS_GROWTH_RATE 400.0

class BinghamFluidMaterial2Status : public FluidDynamicMaterialStatus
{
protected:
    double devStrainMagnitude, temp_devStrainMagnitude;
    double devStressMagnitude, temp_devStressMagnitude;
    FloatArray temp_deviatoricStrainVector;

public:
    BinghamFluidMaterial2Status(int n, Domain * d, GaussPoint * g);
    virtual ~BinghamFluidMaterial2Status() { }

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

    virtual void initTempStatus();
    virtual void updateYourself(TimeStep *tStep);

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

    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 FloatArray &giveTempDeviatoricStrainVector() { return temp_deviatoricStrainVector; }
    void letTempDeviatoricStrainVectorBe(FloatArray v) { temp_deviatoricStrainVector = std :: move(v); }

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



class BinghamFluidMaterial2 : public FluidDynamicMaterial
{
protected:
    double mu_0;
    double tau_0;
    double tau_c;
    double mu_inf;
    // Stress growth rate - parameter controlling the shape of regularized model.
    double stressGrowthRate;

public:
    BinghamFluidMaterial2(int n, Domain * d);
    virtual ~BinghamFluidMaterial2() { }

    virtual void computeDeviatoricStressVector(FloatArray &answer, GaussPoint *gp, const FloatArray &eps, TimeStep *tStep);

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

    virtual double giveEffectiveViscosity(GaussPoint *gp, TimeStep *tStep);
    virtual double give(int aProperty, GaussPoint *gp);
    virtual IRResultType initializeFrom(InputRecord *ir);
    virtual void giveInputRecord(DynamicInputRecord &input);
    virtual const char *giveClassName() const { return "BinghamFluidMaterial2"; }
    virtual const char *giveInputRecordName() const { return _IFT_BinghamFluidMaterial2_Name; }
    virtual int checkConsistency();
    virtual MaterialStatus *CreateStatus(GaussPoint *gp) const;

protected:
    double computeActualViscosity(double Tau, double shearRate);
    double computeDevStrainMagnitude(MaterialMode mmode, const FloatArray &epsd);
    double computeDevStressMagnitude(MaterialMode mmode, const FloatArray &sigd);
    void computeDeviatoricStrain(FloatArray &answer, const FloatArray &eps, MaterialMode mmode);
    void computeDeviatoricStress(FloatArray &answer, const FloatArray &deps,
                                 double _nu, MaterialMode mmode);

    void __debug(GaussPoint *gp, TimeStep *tStep);
};
} // end namespace oofem
#endif // binghamfluid2_h