isolinearelasticmaterial.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 isolinearelasticmaterial_h
#define isolinearelasticmaterial_h
 
#include "linearelasticmaterial.h"
#include "dictionary.h"
#include "floatarray.h"
#include "floatmatrix.h"
#include "floatmatrixf.h"
#include "floatarrayf.h"
 
#include "qcmaterialextensioninterface.h"
 
#include "MixedPressure/mixedpressurematerialextensioninterface.h"


#define _IFT_IsotropicLinearElasticMaterial_Name "isole"
#define _IFT_IsotropicLinearElasticMaterial_e "e"
#define _IFT_IsotropicLinearElasticMaterial_n "n"
#define _IFT_IsotropicLinearElasticMaterial_talpha "talpha"
 
namespace oofem {
class GaussPoint;

class IsotropicLinearElasticMaterial : public LinearElasticMaterial, public QCMaterialExtensionInterface, public MixedPressureMaterialExtensionInterface
{
protected:
    double E = 0;
    double nu = 0;
    double G = 0;
    double a = 0;
 
public:
    IsotropicLinearElasticMaterial(int n, Domain *d);
    IsotropicLinearElasticMaterial(int n, Domain *d, double E, double nu);
 
    const char *giveClassName() const override { return "IsotropicLinearElasticMaterial"; }
    const char *giveInputRecordName() const override { return _IFT_IsotropicLinearElasticMaterial_Name; }

    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;

    void initTangents();
 
    double give(int aProperty, GaussPoint *gp) const override;

    double giveYoungsModulus() const { return E; }

    double givePoissonsRatio() const { return nu; }

    double giveShearModulus() const override { return G; }

    double giveBulkModulus() const { return E / ( 3. * ( 1. - 2. * nu ) ); }
 
    FloatMatrixF<3,3> givePlaneStressStiffMtrx(MatResponseMode, GaussPoint * gp,
                                               TimeStep * tStep) const override;
 
    FloatMatrixF<4,4> givePlaneStrainStiffMtrx(MatResponseMode, GaussPoint * gp,
                                               TimeStep * tStep) const override;
 
    FloatMatrixF<1,1> give1dStressStiffMtrx(MatResponseMode, GaussPoint * gp,
                                            TimeStep * tStep) const override;

    static double computeBulkModulusFromYoungAndPoisson(double young, double nu)
    {
        return young / ( 3. * ( 1. - 2. * nu ) );
    }

    static double computeShearModulusFromYoungAndPoisson(double young, double nu)
    {
        return young / ( 2. * ( 1. + nu ) );
    }
 
    double giveQcElasticParamneter() override { return E; }
    double giveQcPlasticParamneter() override { return std :: numeric_limits< float > :: infinity(); }
 
    Interface *giveInterface(InterfaceType t) override {
        if ( t == QCMaterialExtensionInterfaceType ) {
            return static_cast< QCMaterialExtensionInterface * >(this);
        } else if ( t == MixedPressureMaterialExtensionInterfaceType ) {
            return static_cast< MixedPressureMaterialExtensionInterface * >( this );
        } else {
            return nullptr;
        }
    }
 

    void giveCharacteristicMatrix(FloatMatrix &answer, MatResponseMode type, GaussPoint* gp, TimeStep *tStep) const override;
    void giveCharacteristicVector(FloatArray &answer, FloatArray& flux, MatResponseMode type, GaussPoint* gp, TimeStep *tStep) const override;
 
 
 
    void giveDeviatoric3dMaterialStiffnessMatrix(FloatMatrix & answer,
                                                 MatResponseMode,
                                                 GaussPoint * gp,
                                                 TimeStep * tStep) const override;
 
 
    void giveDeviatoricPlaneStrainStiffMtrx(FloatMatrix & answer,
                                            MatResponseMode, GaussPoint * gp,
                                            TimeStep * tStep) const override;
 
 
    void giveInverseOfBulkModulus(double &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override { answer  = 3. * ( 1. - 2. * nu ) / E; }
 
    void giveRealStressVectorUP_3d(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, double pressure, TimeStep *tStep) const override;
    void giveRealStressVectorUP_PlaneStrain(FloatArray &answer, GaussPoint *gp, const FloatArray &reducedStrain, double pressure, TimeStep *tStep) const override;
    double giveCharacteristicValue(MatResponseMode type, GaussPoint* gp, TimeStep *tStep) const override;
};
} // end namespace oofem
#endif // isolinearelasticmaterial_h