truss3d.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 truss3d_h
#define truss3d_h

#include "../sm/Elements/nlstructuralelement.h"
#include "../sm/ErrorEstimators/directerrorindicatorrc.h"
#include "zznodalrecoverymodel.h"
#include "nodalaveragingrecoverymodel.h"

#define _IFT_Truss3d_Name "truss3d"

namespace oofem {
class FEI3dLineLin;

class Truss3d : public NLStructuralElement,
public ZZNodalRecoveryModelInterface,
public NodalAveragingRecoveryModelInterface
{
protected:
    static FEI3dLineLin interp;

public:
    Truss3d(int n, Domain * d);
    virtual ~Truss3d() { }

    virtual FEInterpolation *giveInterpolation() const;

    virtual double computeLength();

    virtual void computeLumpedMassMatrix(FloatMatrix &answer, TimeStep *tStep);
    virtual void computeMassMatrix(FloatMatrix &answer, TimeStep *tStep)
    { this->computeLumpedMassMatrix(answer, tStep); }
    virtual int giveLocalCoordinateSystem(FloatMatrix &answer);

    virtual int computeNumberOfDofs() { return 6; }
    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 int testElementExtension(ElementExtension ext) { return ( ext == Element_EdgeLoadSupport ); }

    virtual Interface *giveInterface(InterfaceType it);

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

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

    // definition & identification
    virtual const char *giveInputRecordName() const { return _IFT_Truss3d_Name; }
    virtual const char *giveClassName() const { return "Truss3d"; }
    virtual IRResultType initializeFrom(InputRecord *ir);
    virtual MaterialMode giveMaterialMode() { return _1dMat; }
    virtual void computeStressVector(FloatArray &answer, const FloatArray &strain, GaussPoint *gp, TimeStep *tStep);
    virtual void computeConstitutiveMatrixAt(FloatMatrix &answer, MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep);

protected:
    // edge load support
    virtual void giveEdgeDofMapping(IntArray &answer, int iEdge) const;
    virtual double computeEdgeVolumeAround(GaussPoint *gp, int);
    virtual int computeLoadLEToLRotationMatrix(FloatMatrix &answer, int, GaussPoint *gp);
    virtual void computeBmatrixAt(GaussPoint *gp, FloatMatrix &answer, int = 1, int = ALL_STRAINS);
    virtual void computeNmatrixAt(const FloatArray &iLocCoord, FloatMatrix &answer);
    virtual void computeGaussPoints();

};
} // end namespace oofem
#endif // truss3d_h