structuralelementevaluator.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 structuralelementevaluator_h
#define structuralelementevaluator_h
 
#include "iga/iga.h"
#include "matresponsemode.h"
 
namespace oofem {
class StructuralElementEvaluator
{
protected:
    FloatMatrix rotationMatrix;
    int rotationMatrixDefined;
 
    StructuralElementEvaluator();
    virtual ~StructuralElementEvaluator() { }
    virtual void giveCharacteristicMatrix(FloatMatrix &answer, CharType mtrx, TimeStep *tStep);
    virtual void giveCharacteristicVector(FloatArray &answer, CharType type, ValueModeType mode, TimeStep *tStep);

    virtual IntegrationRule *giveMassMtrxIntegrationRule() { return nullptr; }
    virtual void giveMassMtrxIntegrationMask(IntArray &answer) { answer.clear(); }
    virtual void computeLumpedMassMatrix(FloatMatrix &answer, TimeStep *tStep);
    virtual void computeConsistentMassMatrix(FloatMatrix &answer, TimeStep *tStep, double &mass);
 
protected:
    virtual Element *giveElement() = 0;

    virtual void computeNMatrixAt(FloatMatrix &answer, GaussPoint *gp) = 0;
    virtual void computeBMatrixAt(FloatMatrix &answer, GaussPoint *gp) = 0;
    virtual void computeStiffnessMatrix(FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep);
    virtual double computeVolumeAround(GaussPoint *gp) { return 0.; }
    virtual void giveInternalForcesVector(FloatArray &answer, TimeStep *tStep, bool useUpdatedGpRecord = false);
    void computeVectorOf(ValueModeType u, TimeStep *tStep, FloatArray &answer) {
        this->giveElement()->computeVectorOf(u, tStep, answer);
    }
    void computeVectorOf(PrimaryField &field, const IntArray &dofIdMask, ValueModeType u, TimeStep *tStep, FloatArray &answer) {
        this->giveElement()->computeVectorOf(field, dofIdMask, u, tStep, answer);
    }
    bool isActivated(TimeStep *tStep) { return true; }
    void updateInternalState(TimeStep *tStep);

    virtual void computeStressVector(FloatArray &answer, const FloatArray &strain, GaussPoint *gp, TimeStep *tStep) = 0;
    virtual void computeConstitutiveMatrixAt(FloatMatrix &answer, MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) = 0;
    //    virtual void computeConstitutiveMatrix_dPdF_At(FloatMatrix &answer, MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) = 0;

    void computeStrainVector(FloatArray &answer, GaussPoint *gp, TimeStep *tStep, FloatArray &u);
 
    /*
     * Assembles the code numbers of given integration element (sub-patch)
     * This is done by obtaining list of nonzero shape functions and
     * by collecting the code numbers of nodes corresponding to these
     * shape functions
     * @returns returns nonzero if integration rule code numbers differ from element code numbers
     */
    //virtual int giveIntegrationElementCodeNumbers(IntArray &answer, Element *elem,
    //                                              IntegrationRule *ie,);

    virtual int giveIntegrationElementLocalCodeNumbers(IntArray &answer, Element *elem,
                                                       IntegrationRule *ie);
#ifdef __OOFEG
    friend void drawIGAPatchDeformedGeometry(Element *elem, StructuralElementEvaluator *se, oofegGraphicContext &gc, TimeStep *tStep, UnknownType);
#endif
};
} // end namespace oofem
#endif //structuralelementevaluator_h