solidshell.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 solidshell_h
#define solidshell_h
 
#include "sm/Elements/3D/lspace.h"
 
 
#define _IFT_SolidShell_Name "solidshell"
 
// EAS parameters
#define _IFT_SolidShell_EAS_type "eas_type"
 
 
namespace oofem {
class FEI3dHexaLin;
class ParamKey;

class SolidShell  : public LSpace
{
protected:
    static FEI3dHexaLin interpolation;
    static ParamKey IPK_SolidShell_EAS_type;
 
public:
    SolidShell(int n, Domain * d);
    virtual ~SolidShell() { }
    FEInterpolation *giveInterpolation() const override;
    void computeBmatrixAt(GaussPoint *gp, FloatMatrix &answer, int lowerIndx = 1, int upperIndx = ALL_STRAINS) override;
    void computeBHmatrixAt(GaussPoint *gp, FloatMatrix &answer) override;
    void computeBHmatrixAt(FloatArray &lCoords, FloatMatrix &answer);
 
    virtual void computeBEmatrixAt(GaussPoint *gp, FloatMatrix &answer, TimeStep *tStep);
    void computeGaussPoints() override;
    virtual void computeEASBmatrixAt(GaussPoint *gp, FloatMatrix &answer);
    void giveInternalForcesVector(FloatArray &answer, TimeStep *tStep, int useUpdatedGpRecord) override;
    void computeStiffnessMatrix(FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep) override;
    void computeGeometricStiffness(FloatMatrix &answer, GaussPoint *gp, TimeStep *tStep);
 
    void computeFVector(FloatArray &answer, FloatArray &lCoords, FloatArray &ae);
    void computeEVector(FloatArray &answer, FloatArray &lCoords, FloatArray &ae);
    void computeEASfield(FloatArray &answer, TimeStep *tStep);
 
    // definition & identification
    const char *giveInputRecordName() const override { return _IFT_LSpace_Name; }
    const char *giveClassName() const override { return "SolidShell"; }
    void initializeFrom(InputRecord &ir) override;
 
    // variables associated with EAS
    int EAS_type; 
    FloatArray tempAlpha;
    FloatArray alpha;
    FloatArray u_k;
    FloatMatrix invKEE;
    FloatMatrix KEC;
    FloatArray fE;
    void computeAlpha(FloatArray &answer, FloatArray &u);
 
    void computeBondTransformationMatrix(FloatMatrix &answer, FloatMatrix &base);
    void postInitialize() override;
    int checkConsistency() override{ return 1; };
 
private:
    void x(int arg1);
};
} // end namespace oofem
#endif