ElasticIsotropicBeamFiber.h

//----------------------------------------------------------------------------
//  XC program; finite element analysis code
//  for structural analysis and design.
//
//  Copyright (C)  Luis Claudio Pérez Tato
//
//  This program derives from OpenSees <http://opensees.berkeley.edu>
//  developed by the  «Pacific earthquake engineering research center».
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// along with this program.
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//----------------------------------------------------------------------------
/* ****************************************************************** **
**    OpenSees - Open System for Earthquake Engineering Simulation    **
**          Pacific Earthquake Engineering Research Center            **
**                                                                    **
**                                                                    **
** (C) Copyright 1999, The Regents of the University of California    **
** All Rights Reserved.                                               **
**                                                                    **
** Commercial use of this program without express permission of the   **
** University of California, Berkeley, is strictly prohibited.  See   **
** file 'COPYRIGHT'  in main directory for information on usage and   **
** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
**                                                                    **
** Developed by:                                                      **
**   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
**   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
**   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
**                                                                    **
** ****************************************************************** */
                                                                        

// $Revision: 1.3 $
// $Date: 2002/12/05 22:49:09 $
// $Source: /usr/local/cvs/OpenSees/SRC/material/nD/ElasticIsotropicBeamFiber.h,v $

// Written: MHS
// Created: Aug 2001
//
// Description: Elastic isotropic model where stress components 22, 33, and 23
// are condensed out.

#ifndef ElasticIsotropicBeamFiber_h
#define ElasticIsotropicBeamFiber_h

#include <material/nD/ElasticIsotropicMaterial.h>

namespace XC {
//
class ElasticIsotropicBeamFiber : public ElasticIsotropicMaterial
  {
  private:
    static Vector sigma;    // Stress vector ... class-wide for returns
    static Matrix D;        // Elastic constants
  public:
    ElasticIsotropicBeamFiber(int tag, double E, double nu, double rho);
    ElasticIsotropicBeamFiber(int tag);
    ElasticIsotropicBeamFiber();

    int setTrialStrainIncr (const Vector &v);
    int setTrialStrainIncr (const Vector &v, const Vector &r);
    const Matrix &getTangent(void) const;
    const Matrix &getInitialTangent (void) const;
    const Vector &getStress(void) const;
        
    int commitState (void);
    int revertToLastCommit (void);
    int revertToStart (void);
    
    NDMaterial *getCopy(void) const;
    const std::string &getType(void) const;
    int getOrder(void) const;
  };
} // end of XC namespace


#endif