isolinearelasticmaterial.h

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/*
 *
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 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
 *            #####    #####   ##      ######  ##     ##
 *
 *
 *             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 isolinearelasticmaterial_h
#define isolinearelasticmaterial_h

#include "linearelasticmaterial.h"
#include "dictionary.h"
#include "floatarray.h"
#include "floatmatrix.h"

#include "qcmaterialextensioninterface.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
{
protected:
    double E;
    double nu;
    double G;

public:
    IsotropicLinearElasticMaterial(int n, Domain *d) : LinearElasticMaterial(n, d) { }
    IsotropicLinearElasticMaterial(int n, Domain *d, double E, double nu);
    virtual ~IsotropicLinearElasticMaterial() { }

    virtual void giveThermalDilatationVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep);

    // identification and auxiliary functions
    virtual const char *giveClassName() const { return "IsotropicLinearElasticMaterial"; }
    virtual const char *giveInputRecordName() const { return _IFT_IsotropicLinearElasticMaterial_Name; }

    virtual IRResultType initializeFrom(InputRecord *ir);
    virtual void giveInputRecord(DynamicInputRecord &input);

    virtual double give(int aProperty, GaussPoint *gp);

    double giveYoungsModulus() { return E; }

    double givePoissonsRatio() { return nu; }

    double giveShearModulus() { return G; }

    double giveBulkModulus() { return E / ( 3. * ( 1. - 2. * nu ) ); }

    virtual void give3dMaterialStiffnessMatrix(FloatMatrix & answer,
                                               MatResponseMode,
                                               GaussPoint * gp,
                                               TimeStep * tStep);

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

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

    virtual void give1dStressStiffMtrx(FloatMatrix & answer,
                                       MatResponseMode, GaussPoint * gp,
                                       TimeStep * tStep);

    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 ) );
    }


    virtual  double giveQcElasticParamneter(){return E;}
    virtual  double giveQcPlasticParamneter(){return std::numeric_limits<float>::infinity();}

    virtual Interface *giveInterface(InterfaceType t) {
        if ( t == QCMaterialExtensionInterfaceType ) {
      //            return static_cast< QCMaterialExtensionInterface * >(this);
      return this;
        } else {
            return NULL;
        }
    }

    
};
} // end namespace oofem
#endif // isolinearelasticmaterial_h