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ElasticSection2d.h

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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: 1.9 $
00022 // $Date: 2006/09/06 20:17:34 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/section/ElasticSection2d.h,v $
00024 
00025 #ifndef ElasticSection2d_h
00026 #define ElasticSection2d_h
00027 
00028 #include <SectionForceDeformation.h>
00029 #include <Matrix.h>
00030 #include <Vector.h>
00031 
00032 class Channel;
00033 class FEM_ObjectBroker;
00034 class Information;
00035 
00036 class ElasticSection2d: public SectionForceDeformation
00037 {
00038  public:
00039   ElasticSection2d(int tag, double E, double A, double I);
00040   ElasticSection2d(void);    
00041   ~ElasticSection2d(void);
00042   
00043   int commitState(void);
00044   int revertToLastCommit(void);
00045   int revertToStart(void);
00046   
00047   const char *getClassType(void) const {return "ElasticSection2d";};
00048   
00049   int setTrialSectionDeformation(const Vector&);
00050   const Vector &getSectionDeformation(void);
00051   
00052   const Vector &getStressResultant(void);
00053   const Matrix &getSectionTangent(void);
00054   const Matrix &getInitialTangent(void);
00055   const Matrix &getSectionFlexibility(void);
00056   const Matrix &getInitialFlexibility(void);
00057   
00058   SectionForceDeformation *getCopy(void);
00059   const ID &getType(void);
00060   int getOrder(void) const;
00061   
00062   int sendSelf(int commitTag, Channel &theChannel);
00063   int recvSelf(int commitTag, Channel &theChannel,
00064                FEM_ObjectBroker &theBroker);
00065     
00066   void Print(OPS_Stream &s, int flag =0);
00067 
00068   int setParameter(const char **argv, int argc, Parameter &param);
00069   int updateParameter(int parameterID, Information &info);
00070   int activateParameter(int parameterID);
00071   const Vector& getStressResultantSensitivity(int gradNumber,
00072                                               bool conditional);
00073   const Vector& getSectionDeformationSensitivity(int gradNumber);
00074   const Matrix& getInitialTangentSensitivity(int gradNumber);
00075   int commitSensitivity(const Vector& sectionDeformationGradient,
00076                         int gradNumber, int numGrads);
00077   
00078  protected:
00079   
00080  private:
00081   
00082   double E, A, I;
00083   
00084   Vector e;                     // section trial deformations
00085   Vector eCommit;
00086   
00087   static Vector s;
00088   static Matrix ks;
00089   static ID code;
00090   
00091   int parameterID;
00092 };
00093 
00094 #endif

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