FiberSectionGJ.hGo to the documentation of this file.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: 1.5 $ 00022 // $Date: 2006/09/05 23:29:17 $ 00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/section/FiberSectionGJ.h,v $ 00024 00025 // Written: fmk 00026 // Created: 04/01 00027 // 00028 // Description: This file contains the class definition for 00029 // FiberSectionGJ.h. FiberSectionGJ provides the abstraction of a 00030 // 3d beam section discretized by fibers. The section stiffness and 00031 // stress resultants are obtained by summing fiber contributions. 00032 00033 #ifndef FiberSectionGJ_h 00034 #define FiberSectionGJ_h 00035 00036 #include <SectionForceDeformation.h> 00037 #include <Vector.h> 00038 #include <Matrix.h> 00039 00040 class UniaxialMaterial; 00041 class Fiber; 00042 class Response; 00043 00044 class FiberSectionGJ : public SectionForceDeformation 00045 { 00046 public: 00047 FiberSectionGJ(); 00048 FiberSectionGJ(int tag, int numFibers, Fiber **fibers, double GJ = 1.0e10); 00049 ~FiberSectionGJ(); 00050 00051 const char *getClassType(void) const {return "FiberSectionGJ";}; 00052 00053 int setTrialSectionDeformation(const Vector &deforms); 00054 const Vector &getSectionDeformation(void); 00055 00056 const Vector &getStressResultant(void); 00057 const Matrix &getSectionTangent(void); 00058 const Matrix &getInitialTangent(void); 00059 00060 int commitState(void); 00061 int revertToLastCommit(void); 00062 int revertToStart(void); 00063 00064 SectionForceDeformation *getCopy(void); 00065 const ID &getType (void); 00066 int getOrder (void) const; 00067 00068 int sendSelf(int cTag, Channel &theChannel); 00069 int recvSelf(int cTag, Channel &theChannel, 00070 FEM_ObjectBroker &theBroker); 00071 void Print(OPS_Stream &s, int flag = 0); 00072 00073 Response *setResponse(const char **argv, int argc, Information &info, OPS_Stream &s); 00074 int getResponse(int responseID, Information &info); 00075 00076 int addFiber(Fiber &theFiber); 00077 00078 int setParameter(const char **argv, int argc, Parameter ¶m); 00079 00080 protected: 00081 00082 private: 00083 int numFibers; // number of fibers in the section 00084 UniaxialMaterial **theMaterials; // array of pointers to materials 00085 double *matData; // data for the materials [yloc and area] 00086 double kData[6]; // data for ks matrix 00087 double sData[3]; // data for s vector 00088 00089 double yBar; // Section centroid 00090 double zBar; 00091 00092 Vector e; // trial section deformations 00093 Vector eCommit; // committed section deformations 00094 00095 static ID code; 00096 static Vector s; // section resisting forces 00097 static Matrix ks; // section stiffness 00098 00099 double GJ; 00100 }; 00101 00102 #endif
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