Femoop: J:/Tecgraf/prj/femoop/trunk/elc/elcdshh9.h Source File

00001 // -------------------------------------------------------------------------
00002 // ElcDSHH9.h - This header file contains data structure for the assumed
00003 //              strain degenerated Mindlin-Reissner shell element, also
00004 //              known as Huang-Hinton 9-Noded Shell Element.
00005 //                
00006 //              
00007 // Remarks:
00008 //             
00009 //-------------------------------------------------------------------------
00010 //
00011 // $Author: evandro $
00012 // $Revision: 1.1 $
00013 // $Date: 1999/04/12 14:48:47 $
00014 // $State: Exp $
00015 //
00016 // -------------------------------------------------------------------------
00017 
00018 #ifndef _ELCDSHH9_H 
00019 #define _ELCDSHH9_H 
00020 
00021 #include "gbldefs.h"
00022 #include "elcdsh3d.h"
00023 #include "shape.h"
00024 
00025 
00026 // -------------------------------------------------------------------------
00027 // Definition of a 3-D integrated Degenerated Shell Element Class:
00028 
00029 class cElcDegShellHH9 : public cElcDegShell3D
00030 {
00031  private:
00032       sNatCoord    *SamplingPts;    // sampling points for b-matrix eval.
00033       double      **CoordSys;       // orthogonal coordinate system base 
00034                                     // vectors in center of element. 
00035  public:
00036                     cElcDegShellHH9   ( eShapeType );
00037   virtual          ~cElcDegShellHH9   ( void );
00038           void      Stiffness           ( double * ) ;
00039           void      CalcIntPtStress     ( void );
00040           void      CalcIntPtStress     ( cIntPt *, sTensor * );
00041           void      CalcPtStress        ( sNatCoord *, sTensor * );
00042           int       InternalForce       ( double * );
00043   virtual void      SPRMatrixTen        ( cNode *, double **,
00044                                           double ** );
00045   virtual void      LocalSystem         ( sNatCoord *,double ** );
00046 
00047   protected:
00048           void      EvalHFuncs          ( double, double * );
00049           void      EvalLFuncs          ( double, double * );
00050           void      SubstShpFunc        ( int, sNatCoord *, double * );
00051           void      InterpMatrices      ( sNatCoord *, int,
00052                                           double **, double **, double **,
00053                                           double **, double **, double **,
00054                                           double *, double *,double *,
00055                                           double *,double *, double *); 
00056           void      ModBMatrix          ( int,int,sNatCoord *,double **,
00057                                           double **,double *,sDerivNat *,
00058                                           double *, double *, double **,
00059                                           double **);
00060           void      CalcBSamp           ( double **, double **, double **,
00061                                           double **, double **, double **);
00062           void      EvalScissorsVectors ( sVector *, sVector *,
00063                                           sVector *, sVector * );
00064           void      EvalCoordSystem     ( sVector[2],sVector[3] );
00065           void      TransfBMatrix       ( double **, double **, double **);
00066 
00067 
00068                                          
00069 };
00070 
00071 #endif
00072