latticestructuralmaterial.h

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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 latticestructuralmaterial_h
#define latticestructuralmaterial_h
 
#include "../structuralmaterial.h"
#include "floatarray.h"
#include "floatmatrix.h"
#include "matconst.h"
#include "matstatus.h"
#include "valuemodetype.h"
#include <vector>


#define _IFT_LatticeStructuralMaterial_referencetemperature "referencetemperature"
#define _IFT_LatticeStructuralMaterial_talpha "talpha"
 
namespace oofem {
#define STRAIN_STEPS 10.0
 
class GaussPoint;

class LatticeStructuralMaterial : public StructuralMaterial
{
protected:
    double referenceTemperature = 0.;
 
public:

    LatticeStructuralMaterial(int n, Domain *d);
 
    void giveStiffnessMatrix(FloatMatrix &answer,
                             MatResponseMode mode,
                             GaussPoint *gp,
                             TimeStep *tStep) const override;
 
    virtual bool hasAnalyticalTangentStiffness() const { return true; }
 
    bool hasMaterialModeCapability(MaterialMode mode) const override;
    const char *giveClassName() const override { return "LatticeStructuralMaterial"; }
 
    virtual double giveLatticeStress1d(const double strain, GaussPoint *gp, TimeStep *tStep);
 
    virtual FloatArrayF< 3 >giveLatticeStress2d(const FloatArrayF< 3 > &strain, GaussPoint *gp, TimeStep *tStep);
 
    virtual FloatArrayF< 6 >giveLatticeStress3d(const FloatArrayF< 6 > &strain, GaussPoint *gp, TimeStep *tStep);
 
    virtual FloatMatrixF< 1, 1 >give1dLatticeStiffnessMatrix(MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const;
    virtual FloatMatrixF< 3, 3 >give2dLatticeStiffnessMatrix(MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const;
    virtual FloatMatrixF< 6, 6 >give3dLatticeStiffnessMatrix(MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const;
 
    int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *atTime) override;
};
} // end namespace oofem
#endif // latticestructuralmaterial_h