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00001 /* ****************************************************************** **
00002 **    OpenSees - Open System for Earthquake Engineering Simulation    **
00003 **          Pacific Earthquake Engineering Research Center            **
00004 **                                                                    **
00005 **                                                                    **
00006 ** (C) Copyright 1999, The Regents of the University of California    **
00007 ** All Rights Reserved.                                               **
00008 **                                                                    **
00009 ** Commercial use of this program without express permission of the   **
00010 ** University of California, Berkeley, is strictly prohibited.  See   **
00011 ** file 'COPYRIGHT'  in main directory for information on usage and   **
00012 ** redistribution,  and for a DISCLAIMER OF ALL WARRANTIES.           **
00013 **                                                                    **
00014 ** Developed by:                                                      **
00015 **   Frank McKenna (fmckenna@ce.berkeley.edu)                         **
00016 **   Gregory L. Fenves (fenves@ce.berkeley.edu)                       **
00017 **   Filip C. Filippou (filippou@ce.berkeley.edu)                     **
00018 **                                                                    **
00019 ** ****************************************************************** */
00020                                                                         
00021 // $Revision: 1.2 $
00022 // $Date: 2001/05/22 07:33:54 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/section/ElasticSection2d.h,v $
00024                                                                         
00025                                                                         
00027 // File:  ~/Src/element/hinge/ElasticSection2d.h
00028 //
00029 // Written by Matthew Peavy
00030 //
00031 // Written:  Feb 13, 2000
00032 // Debugged: Feb 14, 2000
00033 // Revised:  May 2000 -- MHS
00034 //
00035 //
00036 // Purpose:  This header file contains the prototype
00037 // for the ElasticSection2d class.
00038 
00039 #ifndef ElasticSection2d_h
00040 #define ElasticSection2d_h
00041 
00042 #include <SectionForceDeformation.h>
00043 #include <Matrix.h>
00044 #include <Vector.h>
00045 
00046 #include <Channel.h>
00047 #include <FEM_ObjectBroker.h>
00048 #include <Information.h>
00049 
00051 class ElasticSection2d: public SectionForceDeformation
00052 {
00053   public:
00055  ElasticSection2d (int tag, double E, double A, double I);
00057     ElasticSection2d (int tag, double EA, double EI);
00059     ElasticSection2d (void);    
00061  ~ElasticSection2d (void);
00062 
00064     int commitState (void);
00066     int revertToLastCommit (void);
00068     int revertToStart (void);
00069 
00071     int setTrialSectionDeformation (const Vector&);
00073     const Vector &getSectionDeformation (void);
00074 
00076     const Vector &getStressResultant (void);
00078     const Matrix &getSectionTangent (void);
00080     const Matrix &getSectionFlexibility (void);
00081     
00083     SectionForceDeformation *getCopy (void);
00085     const ID &getType (void) const;
00087     int getOrder (void) const;
00088     
00090     int sendSelf (int commitTag, Channel &theChannel);
00092     int recvSelf (int commitTag, Channel &theChannel,
00093     FEM_ObjectBroker &theBroker);
00094     
00096     void Print (ostream &s, int flag =0);
00097 
00098   protected:
00099 
00100   private:
00101    
00103     double E, A, I;
00104 
00106     Vector e;   
00107  Vector eCommit;
00108     
00110     static ID code;
00111 };
00112 
00113 #endif
00114 ÿ