microplanematerial.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 microplanematerial_h
#define microplanematerial_h
 
#include "sm/Materials/structuralmaterial.h"
#include "matconst.h"
#include "floatarrayf.h"


#define _IFT_MicroplaneMaterial_nmp "nmp"
#define _IFT_MicroplaneMaterial_e "e"
#define _IFT_MicroplaneMaterial_n "n"
 
namespace oofem {
 
#define MAX_NUMBER_OF_MICROPLANES 61

struct MicroplaneState
{
    double n = 0.;
    double v = 0.;
    double m = 0.;
    double l = 0.;
};
 

class MicroplaneMaterial : public StructuralMaterial
{
protected:
    int numberOfMicroplanes = 0;

    FloatArray microplaneWeights;
    std::vector<FloatArrayF<3>> microplaneNormals;

    FloatArrayF<6> Kronecker;

    std::vector<FloatArrayF<6>> N;
    std::vector<FloatArrayF<6>> M;
    std::vector<FloatArrayF<6>> L;

    double E = 0.;

    double nu = 0.;
 
public:

    MicroplaneMaterial(int n, Domain *d) : StructuralMaterial(n, d) { }

    double computeNormalStrainComponent(int mnumber, const FloatArray &macroStrain) const;
    double computeNormalVolumetricStrainComponent(const FloatArray &macroStrain) const;
    double computeNormalDeviatoricStrainComponent(int mnumber, const FloatArray &macroStrain) const;
    double computeShearMStrainComponent(int mnumber, const FloatArray &macroStrain) const;
    double computeShearLStrainComponent(int mnumber, const FloatArray &macroStrain) const;
    MicroplaneState computeStrainVectorComponents(int mnumber, const FloatArray &macroStrain) const;
 

    double giveMicroplaneIntegrationWeight(int mnumber) const;

    virtual void initializeData(int numberOfMicroplanes);
 
    FloatMatrixF<6,6> give3dMaterialStiffnessMatrix(MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const override;
 
    void initializeFrom(InputRecord &ir) override;
    void giveInputRecord(DynamicInputRecord &input) override;
};
} // end namespace oofem
#endif // microplanematerial_h