BeamWithHinges2d.h

// -*-c++-*-
//----------------------------------------------------------------------------
//  XC program; finite element analysis code
//  for structural analysis and design.
//
//  Copyright (C)  Luis C. Pérez Tato
//
//  This program derives from OpenSees <http://opensees.berkeley.edu>
//  developed by the  «Pacific earthquake engineering research center».
//
//  Except for the restrictions that may arise from the copyright
//  of the original program (see copyright_opensees.txt)
//  XC is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or 
//  (at your option) any later version.
//
//  This software 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 General Public License for more details. 
//
//
// You should have received a copy of the GNU General Public License 
// along with this program.
// If not, see <http://www.gnu.org/licenses/>.
//----------------------------------------------------------------------------
/* ****************************************************************** **
**    OpenSees - Open System for Earthquake Engineering Simulation    **
**          Pacific Earthquake Engineering Research Center            **
**                                                                    **
**                                                                    **
** (C) Copyright 1999, The Regents of the University of California    **
** All Rights Reserved.                                               **
**                                                                    **
** Commercial use of this program without express permission of the   **
** University of California, Berkeley, is strictly prohibited.  See   **
** file 'COPYRIGHT'  in main directory for information on usage and   **
** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
**                                                                    **
** Developed by:                                                      **
**   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
**   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
**   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
**                                                                    **
** ****************************************************************** */
                                                                        
// $Revision: 1.11 $
// $Date: 2003/02/25 23:32:47 $
// $Source: /usr/local/cvs/OpenSees/SRC/element/beamWithHinges/BeamWithHinges2d.h,v $

#ifndef BeamWithHinges2d_h
#define BeamWithHinges2d_h

#include <domain/mesh/element/truss_beam_column/BeamColumnWithSectionFDTrf2d.h>
#include "material/section/repres/CrossSectionProperties2d.h"
#include "domain/mesh/element/utils/fvectors/FVectorBeamColumn2d.h"
#include <utility/matrix/Matrix.h>
#include <utility/matrix/Vector.h>

namespace XC {
class Channel;
class FEM_ObjectBroker;

class PrismaticBarCrossSection;

class CrdTransf2d;
class Response;
class Renderer;

//
class BeamWithHinges2d: public BeamColumnWithSectionFDTrf2d
  {
  private:
    CrossSectionProperties2d ctes_scc; 
    double beta1, beta2;

    Matrix fs[2];
    Vector sr[2];
    Vector  e[2];
  
    Matrix kb;
    Vector q;
  
    Matrix kbCommit;
    Vector qCommit;
    Vector eCommit[2];  

    int initialFlag;
  
    int maxIter;
    double tolerance;

    Matrix sp;  
    FVectorBeamColumn2d p0; 
    FVectorBeamColumn2d v0; 
  
    static Matrix theMatrix;
    static Vector theVector;
    static double workArea[];
  
    void setHinges(void);
  
    void getForceInterpMatrix(Matrix &b, double x, const ID &c);
    void getDistrLoadInterpMatrix(Matrix &bp, double x, const ID &c);
  protected:
    int sendData(Communicator &);
    int recvData(const Communicator &);  
  public:
    BeamWithHinges2d(int tag, int nodeI, int nodeJ,
           double E, double A, double I,
           PrismaticBarCrossSection &sectionRefI, double hingeIlen, 
           PrismaticBarCrossSection &sectionRefJ, double hingeJlen,
           CrdTransf2d &coordTrans, double massDensPerUnitLength = 0.0,
           int max = 1, double tol = 1.0e-16);
    BeamWithHinges2d(int tag= 0);
    BeamWithHinges2d(int tag,const Material *theSection,const CrdTransf *coordTransf);
    Element *getCopy(void) const;
  
    inline CrossSectionProperties2d getSectionProperties(void) const
      { return ctes_scc; }
    void setSectionProperties(const CrossSectionProperties2d &ctes)
      { ctes_scc= ctes; }

    int getNumDOF(void) const;
    void setDomain(Domain *theDomain);
  
    int commitState(void);
    int revertToLastCommit(void);
    int revertToStart(void);
  
    int update(void);
    const Matrix &getTangentStiff(void) const;
    const Matrix &getInitialStiff(void) const;
    const Matrix &getMass(void) const;
  
    void zeroLoad(void);
    int addLoad(ElementalLoad *, double loadFactor);
    int addInertiaLoadToUnbalance(const Vector &accel);
    const Vector &getResistingForce(void) const;
    const Vector &getResistingForceIncInertia(void) const;
  
    int sendSelf(Communicator &);
    int recvSelf(const Communicator &);
  
    Response *setResponse(const std::vector<std::string> &argv, Information &info);
    int getResponse(int responseID, Information &info);
  
    int setParameter(const std::vector<std::string> &argv, Parameter &param);
    int updateParameter(int parameterID, Information &info);
  
    void Print(std::ostream &s, int flag = 0) const;
  };
} // end of XC namespace

#endif