J:/Tecgraf/prj/femoop/trunk/elc/elcbeam.h

// -------------------------------------------------------------------------
// ElcBeam.h - This header file contains methods for beams and
//             element classes.
// -------------------------------------------------------------------------
//
// $Author: evandro $        Gilson Fujii
// $Revision: 1.2 $
// $Date: 1999/04/12 14:48:47 $          25 07 96
// $State: Exp $
//
// -------------------------------------------------------------------------
// Protected methods:
// -------------------------------------------------------------------------
//
// int CondenseEndLib(int *endlib, double *mtx)
//
//  enlib  -  beam end liberations (1 = fixed dof/0 = free dof)         (in)
//  mtx    -  stiffnes matrix (stored in vector form)               (in/out)
//
// This method transforms, by static condensation, a given cannonical beam
// matrix to consider end liberations.
// -------------------------------------------------------------------------

#ifndef _ELCBEAM_H
#define _ELCBEAM_H

#include "gbldefs.h"
#include "elcbar.h"

// -------------------------------------------------------------------------
// Definition of a Beam Element Class:
//
class cElcBeam : public cElcBar
{
 protected:
          int     _iOriLabel;        // Beam orientation label
          int     _iLibLabel;        // Beam end liberation label

 private:
 static   int     CondenseEndLib ( int *, double * );
 static   int     CondenseEndLib ( int *, double *, double * );
          void    CompRotMat     ( void );
          void    GetRelease     ( int * );
          void    CompLocStiffMat( double * );

 public:
                  cElcBeam       ( void );
  virtual        ~cElcBeam       ( void );
          void    ReadElmLabels  ( void );
          void    Stiffness      ( double  * );
          int     InternalForce  ( double  * );
          void    CompEquivForce ( double  * );
          void    NodeStress     ( sTensor * );
};

#endif

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