diidynamic.h

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/*
 *
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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 diidynamic_h
#define diidynamic_h
 
#include "sm/EngineeringModels/structengngmodel.h"
#include "sparselinsystemnm.h"
#include "sparsemtrx.h"
#include "timediscretizationtype.h"


#define _IFT_DIIDynamic_Name "diidynamic"
#define _IFT_DIIDynamic_deltat "deltat"
#define _IFT_DIIDynamic_ddtScheme "ddtscheme"
#define _IFT_DIIDynamic_gamma "gamma"
#define _IFT_DIIDynamic_beta "beta"
#define _IFT_DIIDynamic_eta "eta"
#define _IFT_DIIDynamic_delta "delta"
#define _IFT_DIIDynamic_theta "theta"
 
namespace oofem {
class DIIDynamic : public StructuralEngngModel
{
protected:
    bool initFlag;
    std :: unique_ptr< SparseMtrx > stiffnessMatrix;
    FloatArray loadVector, previousLoadVector, rhs, rhs2;
    FloatArray displacementVector, velocityVector, accelerationVector;
    FloatArray previousDisplacementVector, previousVelocityVector, previousAccelerationVector;
    FloatArray previousIncrementOfDisplacement;
    FloatArray help;
    double a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11;
    double gamma, beta, deltaT;
    double eta, delta;
    double theta;
 
    LinSystSolverType solverType;
    SparseMtrxType sparseMtrxType;
 
    TimeDiscretizationType previousTimeDiscretization;
    TimeDiscretizationType initialTimeDiscretization;

    std :: unique_ptr< SparseLinearSystemNM > nMethod;
 
public:
    DIIDynamic(int i, EngngModel *master = nullptr);
    virtual ~DIIDynamic();
 
    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 initializeYourself(TimeStep *tStep) override;
 
    // identification
    const char *giveClassName() const override { return "DIIDynamic"; }
    const char *giveInputRecordName() const { return _IFT_DIIDynamic_Name; }
    fMode giveFormulation() override { return TL; }
 
    void printDofOutputAt(FILE *stream, Dof *iDof, TimeStep *tStep) override;
 
    void timesMtrx(FloatArray &answer, FloatArray &vec, CharType type, Domain *domain, TimeStep *tStep);
    void assembleLoadVector(FloatArray &_loadVector, Domain *domain, ValueModeType mode, TimeStep *tStep);
 
 
    void assembleDirichletBcRhsVector (FloatArray& answer, Domain* d, TimeStep *tStep);
    void determineConstants(TimeStep *tStep);
    void saveContext(DataStream &stream, ContextMode mode) override;
    void restoreContext(DataStream &stream, ContextMode mode) override;
 
    TimeDiscretizationType giveInitialTimeDiscretization() { return initialTimeDiscretization; }
};
} // end namespace oofem
#endif // diidynamic_h