J:/Tecgraf/prj/femoop/trunk/cmod/winkpt.h

// -------------------------------------------------------------------------
// winkpt.h -  This header file contains the public data  structure
//             definitions for the unilateral point Winkler 
//             model class within FEMOOP.
// -------------------------------------------------------------------------
// Remarks: In this class, the number of parameters is the number of 
//          points that describe the foundation.
// -------------------------------------------------------------------------
//
// $Author: aurea $
// $Revision: 1.1 $
// $Date: 2001/08/15 $
// $State: Exp $
//
// -------------------------------------------------------------------------

#ifndef _WINKPT
#define _WINKPT

#include "cmodel.h"

// -------------------------------------------------------------------------
// Nonlinear Elastic Foundation class:
//
class cWinklerPt : public cConstModel
{
 protected:
  double  _dW;        // Transversal displacement

 public:
         cWinklerPt   ( cIntPt *, cMaterial * );
        ~cWinklerPt   ( void ) { }
 int     Stress       ( double *, double * );
 void    ModifyCMatrix( double ** );
};


// -------------------------------------------------------------------------
// Nonlinear Elastic Foundation class for 2D problems:
//
class cWinkler2DPt : public cConstModel
{
 protected:
  double  _dux;        // Axial displacement
  double  _duy;        // Transversal displacement

 public:
         cWinkler2DPt ( cIntPt *, cMaterial * );
        ~cWinkler2DPt ( void ) { }
 int     Stress       ( double *, double * );
 void    ModifyCMatrix( double ** );
};

#endif

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