nlinearstatic.h

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/*
 *
 *                 #####    #####   ######  ######  ###   ###
 *               ##   ##  ##   ##  ##      ##      ## ### ##
 *              ##   ##  ##   ##  ####    ####    ##  #  ##
 *             ##   ##  ##   ##  ##      ##      ##     ##
 *            ##   ##  ##   ##  ##      ##      ##     ##
 *            #####    #####   ##      ######  ##     ##
 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2013   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 nlinearstatic_h
#define nlinearstatic_h

#include "../sm/EngineeringModels/linearstatic.h"
#include "sparsenonlinsystemnm.h"


#define _IFT_NonLinearStatic_Name "nonlinearstatic"
#define _IFT_NonLinearStatic_controlmode "controlmode"
#define _IFT_NonLinearStatic_deltat "deltat"
#define _IFT_NonLinearStatic_stiffmode "stiffmode"
#define _IFT_NonLinearStatic_refloadmode "refloadmode"
#define _IFT_NonLinearStatic_keepll "keepll"
#define _IFT_NonLinearStatic_donotfixload "donotfixload"
#define _IFT_NonLinearStatic_nonlocstiff "nonlocstiff"
#define _IFT_NonLinearStatic_nonlocalext "nonlocalext"
#define _IFT_NonLinearStatic_loadBalancingFlag "loadbalancingflag"
#define _IFT_NonLinearStatic_forceloadBalancingFlag "forceloadbalancingflag"
#define _IFT_NonLinearStatic_updateElasticStiffnessFlag "updateelasticstiffnessflag"


namespace oofem {
enum NonLinearStatic_stiffnessMode {
    nls_tangentStiffness = 0, 
    nls_secantStiffness = 1, 
    nls_elasticStiffness = 2, 
    nls_secantInitialStiffness = 3, 
};
enum NonLinearStatic_controlType {
    nls_indirectControl = 0, 
    nls_directControl = 1,   
};

class NonLinearStatic : public LinearStatic
{
protected:
    double prevStepLength, currentStepLength;
    FloatArray totalDisplacement,  incrementOfDisplacement;
    FloatArray internalForces;

    FloatArray initialLoadVector;
    FloatArray incrementalLoadVector;
    FloatArray initialLoadVectorOfPrescribed;
    FloatArray incrementalLoadVectorOfPrescribed;

    double loadLevel, cumulatedLoadLevel;
    bool mstepCumulateLoadLevelFlag;
    int currentIterations;
    NonLinearStatic_stiffnessMode stiffMode;
    int loadInitFlag;
    int nonlocalStiffnessFlag;
    bool updateElasticStiffnessFlag;
    NM_Status numMetStatus;
    SparseNonLinearSystemNM *nMethod;
    NonLinearStatic_controlType controlMode;
    double deltaT;

    SparseNonLinearSystemNM :: referenceLoadInputModeType refLoadInputMode;

    InitialGuess initialGuessType;

public:
    NonLinearStatic(int i, EngngModel * _master = NULL);
    virtual ~NonLinearStatic();

    virtual void solveYourself();
    virtual void solveYourselfAt(TimeStep *tStep);
    virtual void terminate(TimeStep *tStep);

    virtual void printOutputAt(FILE *file, TimeStep *tStep);

    virtual void updateComponent(TimeStep *tStep, NumericalCmpn, Domain *d);
    virtual void updateAttributes(MetaStep *mStep);

    virtual double giveUnknownComponent(ValueModeType type, TimeStep *tStep, Domain *d, Dof *dof);
    virtual IRResultType initializeFrom(InputRecord *ir);
    virtual TimeStep *giveSolutionStepWhenIcApply(bool force = false);
    virtual TimeStep *giveNextStep();
    virtual NumericalMethod *giveNumericalMethod(MetaStep *mStep);

    virtual double giveLoadLevel() { return cumulatedLoadLevel + loadLevel; }

    virtual contextIOResultType saveContext(DataStream &stream, ContextMode mode);
    virtual contextIOResultType restoreContext(DataStream &stream, ContextMode mode);

    virtual void updateDomainLinks();

    // identification
    virtual const char *giveClassName() const { return "NonLinearStatic"; }
    virtual fMode giveFormulation() { return nonLinFormulation; }
    virtual int useNonlocalStiffnessOption() { return this->nonlocalStiffnessFlag; }
    virtual int giveUnknownDictHashIndx(ValueModeType mode, TimeStep *tStep) { return ( int ) mode; }
    virtual int giveCurrentNumberOfIterations() {return currentIterations;}

#ifdef __OOFEG
    virtual void showSparseMtrxStructure(int type, oofegGraphicContext &gc, TimeStep *tStep);
#endif

    virtual int estimateMaxPackSize(IntArray &commMap, DataStream &buff, int packUnpackType);
#ifdef __PARALLEL_MODE
    virtual LoadBalancer *giveLoadBalancer();
    virtual LoadBalancerMonitor *giveLoadBalancerMonitor();

#endif

protected:
    virtual void assemble(SparseMtrx &answer, TimeStep *tStep, const MatrixAssembler &ma,
                          const UnknownNumberingScheme &, Domain *domain);
    void proceedStep(int di, TimeStep *tStep);
    virtual void updateLoadVectors(TimeStep *tStep);
    virtual void computeExternalLoadReactionContribution(FloatArray &reactions, TimeStep *tStep, int di);
    void assembleIncrementalReferenceLoadVectors(FloatArray &_incrementalLoadVector,
                                                 FloatArray &_incrementalLoadVectorOfPrescribed,
                                                 SparseNonLinearSystemNM :: referenceLoadInputModeType _refMode,
                                                 Domain *sourceDomain, TimeStep *tStep);

    virtual void packMigratingData(TimeStep *tStep);
    virtual void unpackMigratingData(TimeStep *tStep);
};
} // end namespace oofem
#endif // nlinearstatic_h