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ElasticShearSection2d.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: 1.1 $
00022 // $Date: 2006/09/06 20:17:34 $
00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/section/ElasticShearSection2d.h,v $
00024 
00025 #ifndef ElasticShearSection2d_h
00026 #define ElasticShearSection2d_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 ElasticShearSection2d: public SectionForceDeformation
00037 {
00038  public:
00039   ElasticShearSection2d(int tag, double E, double A, double I,
00040                         double G, double alpha);
00041   ElasticShearSection2d(void);    
00042   ~ElasticShearSection2d(void);
00043   
00044   int commitState(void);
00045   int revertToLastCommit(void);
00046   int revertToStart(void);
00047   
00048   const char *getClassType(void) const {return "ElasticShearSection2d";};
00049   
00050   int setTrialSectionDeformation(const Vector&);
00051   const Vector &getSectionDeformation(void);
00052   
00053   const Vector &getStressResultant(void);
00054   const Matrix &getSectionTangent(void);
00055   const Matrix &getInitialTangent(void);
00056   const Matrix &getSectionFlexibility(void);
00057   const Matrix &getInitialFlexibility(void);
00058   
00059   SectionForceDeformation *getCopy(void);
00060   const ID &getType(void);
00061   int getOrder(void) const;
00062   
00063   int sendSelf(int commitTag, Channel &theChannel);
00064   int recvSelf(int commitTag, Channel &theChannel,
00065                FEM_ObjectBroker &theBroker);
00066   
00067   void Print(OPS_Stream &s, int flag =0);
00068   
00069   int setParameter(const char **argv, int argc, Parameter &param);
00070   int updateParameter(int parameterID, Information &info);
00071   int activateParameter(int parameterID);
00072   const Vector& getStressResultantSensitivity(int gradNumber,
00073                                               bool conditional);
00074   const Vector& getSectionDeformationSensitivity(int gradNumber);
00075   const Matrix& getInitialTangentSensitivity(int gradNumber);
00076   int commitSensitivity(const Vector& sectionDeformationGradient,
00077                         int gradNumber, int numGrads);
00078   
00079  protected:
00080   
00081  private:
00082   
00083   double E, A, I, G, alpha;
00084   
00085   Vector e;                     // section trial deformations
00086   Vector eCommit;
00087   
00088   static Vector s;
00089   static Matrix ks;
00090   static ID code;
00091   
00092   int parameterID;
00093 };
00094 
00095 #endif

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