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

// -------------------------------------------------------------------------
// ElcAxShH.h - This header file contains data structure for axisymmetric
//              straight hermitian shell finite element.
// -------------------------------------------------------------------------
//
// $Author: joaquim $
// $Revision: 1.1 $
// $Date: 1998/02/16 20:21:11 $
// $State: Exp $
//
// -------------------------------------------------------------------------
// Description:
// This file contains the data structure necessary to implement
// the Straigth Axisymmetric Shell Element. It is similar to a plane frame
// element and can model straight axisymmetric shells (e.g. conical)
// Reference:
// Weaver & Johnston, "Finite Elements for Structural Analysis", p. 257
//
// -------------------------------------------------------------------------

#ifndef  _ELCAXSHH_H
#define  _ELCAXSHH_H

#include "gbldefs.h"
#include "elcaxsh.h"

// -------------------------------------------------------------------------
// Definition of a Straight Axisymmetric Shell Element Class:

class cElcAxShHrmt : public cElcAxShell
{
 protected:
            int   _iNodei;        // first node label
            int   _iNodej;        // second node label
         double   _dLength;       // Element Length 
         double   _dCos;          // cosine of angle of element w.r.t. axis
         double   _dSin;          // sine of angle of element w.r.t. axis

 public:
                    cElcAxShHrmt      ( eShapeType );
  virtual          ~cElcAxShHrmt      ( void );
           void     CreateElement     ( eShapeType );
           void     Stiffness         ( double * );
           void     BMatrix           ( double, double, double ** );
           void     CalcIntPtStress   ( void );           
            int     InternalForce     ( double * );

 protected:
           void     LocalStiffness    ( double * );

          };

#endif

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