FiberSection2d.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: 1.12 $ 00022 // $Date: 2006/09/05 23:29:17 $ 00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/section/FiberSection2d.h,v $ 00024 00025 // Written: fmk 00026 // Created: 04/01 00027 // 00028 // Description: This file contains the class definition for 00029 // FiberSection2d.h. FiberSection2d provides the abstraction of a 00030 // 2d beam section discretized by fibers. The section stiffness and 00031 // stress resultants are obtained by summing fiber contributions. 00032 00033 #ifndef FiberSection2d_h 00034 #define FiberSection2d_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 class SectionIntegration; 00044 00045 class FiberSection2d : public SectionForceDeformation 00046 { 00047 public: 00048 FiberSection2d(); 00049 FiberSection2d(int tag, int numFibers, Fiber **fibers); 00050 FiberSection2d(int tag, int numFibers, UniaxialMaterial **mats, 00051 SectionIntegration &si); 00052 ~FiberSection2d(); 00053 00054 const char *getClassType(void) const {return "FiberSection2d";}; 00055 00056 int setTrialSectionDeformation(const Vector &deforms); 00057 const Vector &getSectionDeformation(void); 00058 00059 const Vector &getStressResultant(void); 00060 const Matrix &getSectionTangent(void); 00061 const Matrix &getInitialTangent(void); 00062 00063 int commitState(void); 00064 int revertToLastCommit(void); 00065 int revertToStart(void); 00066 00067 SectionForceDeformation *getCopy(void); 00068 const ID &getType (void); 00069 int getOrder (void) const; 00070 00071 int sendSelf(int cTag, Channel &theChannel); 00072 int recvSelf(int cTag, Channel &theChannel, 00073 FEM_ObjectBroker &theBroker); 00074 void Print(OPS_Stream &s, int flag = 0); 00075 00076 Response *setResponse(const char **argv, int argc, 00077 Information &info, 00078 OPS_Stream &s); 00079 int getResponse(int responseID, Information &info); 00080 00081 int addFiber(Fiber &theFiber); 00082 00083 // AddingSensitivity:BEGIN ////////////////////////////////////////// 00084 int setParameter(const char **argv, int argc, Parameter ¶m); 00085 const Vector& getStressResultantSensitivity(int gradNumber, 00086 bool conditional); 00087 const Vector& getSectionDeformationSensitivity(int gradNumber); 00088 const Matrix& getInitialTangentSensitivity(int gradNumber); 00089 int commitSensitivity(const Vector& sectionDeformationGradient, 00090 int gradNumber, int numGrads); 00091 // AddingSensitivity:END /////////////////////////////////////////// 00092 00093 protected: 00094 00095 // private: 00096 int numFibers; // number of fibers in the section 00097 UniaxialMaterial **theMaterials; // array of pointers to materials 00098 double *matData; // data for the materials [yloc and area] 00099 double kData[4]; // data for ks matrix 00100 double sData[2]; // data for s vector 00101 00102 double yBar; // Section centroid 00103 00104 SectionIntegration *sectionIntegr; 00105 00106 static ID code; 00107 00108 Vector e; // trial section deformations 00109 Vector eCommit; // committed section deformations 00110 Vector *s; // section resisting forces (axial force, bending moment) 00111 Matrix *ks; // section stiffness 00112 00113 // AddingSensitivity:BEGIN ////////////////////////////////////////// 00114 Vector dedh; // MHS hack 00115 // AddingSensitivity:END /////////////////////////////////////////// 00116 }; 00117 00118 #endif
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