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

// -------------------------------------------------------------------------
// DrkPrg.h  -  This header file contains the  public  data  structure
//              definitions for the Drucker-Prager constitutive model 
//              class within FEMOOP.
// -------------------------------------------------------------------------
//
// $Author: joaquim $
// $Revision: 1.2 $
// $Date: 1998/02/16 20:21:11 $
// $State: Exp $
//
// -------------------------------------------------------------------------

#ifndef _DRUCKERPRAGER_H
#define _DRUCKERPRAGER_H

#include "cmodel.h"
#include "elasplas.h"

// -------------------------------------------------------------------------
// Drucker-Prager constitutive model class:

class cDruckerPrager : public cElastoPlastic
{
 protected:
  double *_Ep, *_IteEp;    // Plastic deformation

 public:
         cDruckerPrager ( cIntPt *, cMaterial * );
        ~cDruckerPrager ( void );
  void   Init           ( void );
  void   Update         ( void );
  void   GetPlasticVar  ( double *, double *  );
  void   SetPlasticVar  ( double *, double *  );
  void   InternalVar    ( double *, double *  ) { }
  void   PlasticModuli  ( double *, double ** ) { }
  double YieldFunction  ( double *, double *  );
  void   YieldGrad      ( double *, double *, double *, double * );
  int    GetNumPrintScls( void );
  void   GetPrintSclLabs( char ** );
  void   GetPrintSclVals( double *, double * );
 
 private:
  void   GetMatData     ( double *, double * );
};

#endif

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