beam2d.h

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/*
 *
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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 beam2d_h
#define beam2d_h

#include "../sm/Elements/Beams/beambaseelement.h"
#include "../sm/CrossSections/layeredcrosssection.h"
#include "dofmanager.h"


#define _IFT_Beam2d_Name "beam2d"
#define _IFT_Beam2d_dofstocondense "dofstocondense"


namespace oofem {
class FEI2dLineLin;
class FEI2dLineHermite;

class Beam2d : public BeamBaseElement, public LayeredCrossSectionInterface
{
protected:
    double kappa, pitch, length;
    DofManager *ghostNodes [ 2 ];
    int numberOfCondensedDofs;

    static FEI2dLineLin interp_geom;
    static FEI2dLineHermite interp_beam;

public:
    Beam2d(int n, Domain *aDomain);
    virtual ~Beam2d();

    virtual void computeConsistentMassMatrix(FloatMatrix &answer, TimeStep *tStep, double &mass, const double *ipDensity = NULL);
    virtual void computeInitialStressMatrix(FloatMatrix &answer, TimeStep *tStep);
    virtual void computeStiffnessMatrix(FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep);
    virtual int giveLocalCoordinateSystem(FloatMatrix &answer);
    virtual void giveInternalForcesVector(FloatArray &answer, TimeStep *tStep, int useUpdatedGpRecord = 0);
    virtual void giveEndForcesVector(FloatArray &answer, TimeStep *tStep);

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

    virtual Interface *giveInterface(InterfaceType);

    virtual FEInterpolation *giveInterpolation() const;
    virtual FEInterpolation *giveInterpolation(DofIDItem id) const { return NULL; }

    virtual int computeNumberOfDofs() { return 6; }
    virtual int computeNumberOfGlobalDofs() { return 6 + this->numberOfCondensedDofs; }
    virtual void giveDofManDofIDMask(int inode, IntArray &) const;
    virtual int giveNumberOfInternalDofManagers() const { return ( ghostNodes [ 0 ] != NULL ) + ( ghostNodes [ 1 ] != NULL ); }
    virtual DofManager *giveInternalDofManager(int i) const {
        if ( i == 1 ) {
            if ( ghostNodes [ 0 ] ) { return ghostNodes [ 0 ]; } else { return ghostNodes [ 1 ]; }
        } else if ( i == 2 ) { // i==2
            return ghostNodes [ 1 ];
        } else {
            OOFEM_ERROR("No such DOF available on Element %d", number);
            return NULL;
        }
    }
    virtual void giveInternalDofManDofIDMask(int i, IntArray &answer) const {
        if ( i == 1 ) {
            if ( ghostNodes [ 0 ] ) {
                ghostNodes [ 0 ]->giveCompleteMasterDofIDArray(answer);
            } else {
                ghostNodes [ 1 ]->giveCompleteMasterDofIDArray(answer);
            }
        } else if ( i == 2 ) { // i==2
            ghostNodes [ 1 ]->giveCompleteMasterDofIDArray(answer);
        } else {
            OOFEM_ERROR("No such DOF available on Element %d", number);
        }
    }

    virtual void giveBoundaryLocationArray(IntArray &locationArray, const IntArray &bNodes, const UnknownNumberingScheme &s, IntArray *dofIds = NULL) {
      giveLocationArray (locationArray, s, dofIds);
    }
     
    virtual void giveBoundaryLocationArray(IntArray &locationArray, const IntArray &bNodes, const IntArray &dofIDMask, const UnknownNumberingScheme &s, IntArray *dofIds = NULL) {
      giveLocationArray (locationArray, dofIDMask, s, dofIds);
    }
    

    virtual double computeVolumeAround(GaussPoint *gp);
    virtual void  printOutputAt(FILE *file, TimeStep *tStep);

    virtual const char *giveClassName() const { return "Beam2d"; }
    virtual const char *giveInputRecordName() const { return _IFT_Beam2d_Name; }
    virtual IRResultType initializeFrom(InputRecord *ir);

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

    virtual void computeStrainVectorInLayer(FloatArray &answer, const FloatArray &masterGpStrain,
                                            GaussPoint *masterGp, GaussPoint *slaveGp, TimeStep *tStep);

    virtual int giveIPValue(FloatArray &answer, GaussPoint *gp, InternalStateType type, TimeStep *tStep);

protected:
    virtual void computeBoundaryEdgeLoadVector(FloatArray &answer, BoundaryLoad *load, int edge, CharType type, ValueModeType mode, TimeStep *tStep, bool global=true);
    virtual void computeBmatrixAt(GaussPoint *, FloatMatrix &, int = 1, int = ALL_STRAINS);
    virtual void computeNmatrixAt(const FloatArray &iLocCoord, FloatMatrix &);
    virtual bool computeGtoLRotationMatrix(FloatMatrix &answer);

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

    void computeBodyLoadVectorAt(FloatArray &answer, Load *load, TimeStep *tStep, ValueModeType mode);

    double giveKappaCoeff(TimeStep *tStep);
    virtual double computeLength();
    double givePitch();
    virtual void computeGaussPoints();
    virtual MaterialMode giveMaterialMode() { return _2dBeam; }
    virtual int giveNumberOfIPForMassMtrxIntegration() { return 4; }

    bool hasDofs2Condense() { return ( ghostNodes [ 0 ] || ghostNodes [ 1 ] ); }
};
} // end namespace oofem
#endif // beam2d_h