truss1d.h

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/*
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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 truss1d_h
#define truss1d_h

#include "../sm/Elements/structuralelement.h"
#include "../sm/ErrorEstimators/directerrorindicatorrc.h"
#include "../sm/ErrorEstimators/zzerrorestimator.h"
#include "../sm/ErrorEstimators/huertaerrorestimator.h"
#include "zznodalrecoverymodel.h"
#include "nodalaveragingrecoverymodel.h"
#include "spatiallocalizer.h"
#include "mmashapefunctprojection.h"

#define _IFT_Truss1d_Name "truss1d"

namespace oofem {
class FEI1dLin;

class Truss1d : public StructuralElement,
public ZZNodalRecoveryModelInterface, public NodalAveragingRecoveryModelInterface, public SpatialLocalizerInterface,
public ZZErrorEstimatorInterface,
public HuertaErrorEstimatorInterface
{
protected:
    static FEI1dLin interp;

public:
    Truss1d(int n, Domain * d);
    virtual ~Truss1d() { }

    virtual FEInterpolation *giveInterpolation() const;

    virtual void computeLumpedMassMatrix(FloatMatrix &answer, TimeStep *tStep);
    virtual void computeMassMatrix(FloatMatrix &answer, TimeStep *tStep)
    { computeLumpedMassMatrix(answer, tStep); }

    virtual int computeNumberOfDofs() { return 2; }
    virtual void giveDofManDofIDMask(int inode, IntArray &) const;

    // characteristic length (for crack band approach)
    virtual double giveCharacteristicLength(const FloatArray &normalToCrackPlane)
    { return this->computeLength(); }

    virtual double computeVolumeAround(GaussPoint *gp);
    
    virtual void computeStressVector(FloatArray &answer, const FloatArray &strain, GaussPoint *gp, TimeStep *tStep);
    virtual void computeConstitutiveMatrixAt(FloatMatrix &answer, MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep);

    virtual int testElementExtension(ElementExtension ext) { return 0; }

    virtual Interface *giveInterface(InterfaceType it);

#ifdef __OOFEG
    virtual void drawRawGeometry(oofegGraphicContext &gc, TimeStep *tStep);
    virtual void drawDeformedGeometry(oofegGraphicContext &gc, TimeStep *tStep, UnknownType);
    virtual void drawScalar(oofegGraphicContext &gc, TimeStep *tStep);
#endif

    // definition & identification
    virtual const char *giveInputRecordName() const { return _IFT_Truss1d_Name; }
    virtual const char *giveClassName() const { return "Truss1d"; }
    virtual MaterialMode giveMaterialMode() { return _1dMat; }

    // NodalAveragingRecoveryMInterface
    virtual void NodalAveragingRecoveryMI_computeNodalValue(FloatArray &answer, int node,
                                                            InternalStateType type, TimeStep *tStep);

    // HuertaErrorEstimatorInterface
    virtual void HuertaErrorEstimatorI_setupRefinedElementProblem(RefinedElement *refinedElement, int level, int nodeId,
                                                                  IntArray &localNodeIdArray, IntArray &globalNodeIdArray,
                                                                  HuertaErrorEstimatorInterface :: SetupMode sMode, TimeStep *tStep,
                                                                  int &localNodeId, int &localElemId, int &localBcId,
                                                                  IntArray &controlNode, IntArray &controlDof,
                                                                  HuertaErrorEstimator :: AnalysisMode aMode);
    virtual void HuertaErrorEstimatorI_computeNmatrixAt(GaussPoint *gp, FloatMatrix &answer);

protected:
    virtual void computeBmatrixAt(GaussPoint *gp, FloatMatrix &answer, int = 1, int = ALL_STRAINS);
    virtual void computeBHmatrixAt(GaussPoint *gp, FloatMatrix &answer);
    virtual void computeNmatrixAt(const FloatArray &iLocCoord, FloatMatrix &answer);
    virtual void computeGaussPoints();

};
} // end namespace oofem
#endif // truss1d_h