nldeidynamic.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 nldeidynamic_h
#define nldeidynamic_h
 
#include "sm/EngineeringModels/structengngmodel.h"
#include "floatarray.h"
#include "floatmatrix.h"
#include "sparselinsystemnm.h"
#include "sparsemtrxtype.h"
 
#include <memory>
 
#define LOCAL_ZERO_MASS_REPLACEMENT 1


#define _IFT_NlDEIDynamic_Name "nldeidynamic"
#define _IFT_NlDEIDynamic_dumpcoef "dumpcoef"
#define _IFT_NlDEIDynamic_deltat "deltat"
#define _IFT_NlDEIDynamic_drflag "drflag"
#define _IFT_NlDEIDynamic_tau "tau"
#define _IFT_NlDEIDynamic_py "py"
#define _IFT_NlDEIDynamic_nonlocalext "nonlocalext"
#define _IFT_NlDEIDynamic_reduct "reduct"
 
namespace oofem {
class NlDEIDynamic : public StructuralEngngModel
{
protected:
    FloatArray massMatrix;
    FloatArray loadVector;
    FloatArray previousIncrementOfDisplacementVector;
    FloatArray displacementVector, velocityVector, accelerationVector;
    FloatArray internalForces;
    double dumpingCoef;
    double deltaT;
    int initFlag;
    double reductionFactor;
    // dynamic relaxation specific vars
    int drFlag;
    FloatArray loadRefVector;
    double c;
    double pt;
    double Tau;
    double pyEstimate;
    double pMp;
 
    LinSystSolverType solverType;
    SparseMtrxType sparseMtrxType;
    std::unique_ptr<SparseLinearSystemNM> nMethod;
 
public:
    NlDEIDynamic(int i, EngngModel *master = nullptr);
 
    virtual ~NlDEIDynamic();
 
    void solveYourself() override;
    void solveYourselfAt(TimeStep *tStep) override;
 
    void updateYourself(TimeStep *tStep) override;
    double giveUnknownComponent(ValueModeType type, TimeStep *tStep, Domain *d, Dof *dof) override;
    void initializeFrom(InputRecord &ir) override;
 
    TimeStep *giveNextStep() override;
    NumericalMethod *giveNumericalMethod(MetaStep *mStep) override;
 
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    void printOutputAt(FILE *file, TimeStep *tStep) override;
 
    void printDofOutputAt(FILE *stream, Dof *iDof, TimeStep *tStep) override;
 
    // identification
    const char *giveInputRecordName() const { return _IFT_NlDEIDynamic_Name; }
    const char *giveClassName() const override { return "NlDEIDynamic"; }
    fMode giveFormulation() override { return TL; }
 
    int giveNumberOfFirstStep(bool force = false) override { return 0; }
 
protected:
    void computeLoadVector(FloatArray &answer, ValueModeType mode, TimeStep *tStep);
    void computeMassMtrx(FloatArray &mass, double &maxOm, TimeStep *tStep);
    void computeMassMtrx2(FloatMatrix &mass, double &maxOm, TimeStep *tStep);
 
    double giveInitialTime() override {return 1;}
 
public:
    int estimateMaxPackSize(IntArray &commMap, DataStream &buff, int packUnpackType) override;
};
} // end namespace oofem
#endif // nldeidynamic_h