UniaxialFiber2d.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: 1.8 $ 00022 // $Date: 2006/09/05 22:06:39 $ 00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/section/fiber/UniaxialFiber2d.h,v $ 00024 00025 00026 // File: ~/fiber/UniaxialFiber2d.h 00027 // 00028 // Written: Remo Magalhaes de Souza 00029 // Created: 10/98 00030 // Revision: 00031 // 00032 // Description: This file contains the class definition for 00033 // UniaxialFiber2d.h. UniaxialFiber2d provides the abstraction of a 00034 // uniaxial fiber whose position is defined with only one coordinate. 00035 // The UniaxialFiber2d is subjected to a stress state with 00036 // only one nonzero axial stress and corresponding axial strain. 00037 // 00038 // What: "@(#) UniaxialFiber2d.h, revA" 00039 00040 #ifndef UniaxialFiber2d_h 00041 #define UniaxialFiber2d_h 00042 00043 #include <Fiber.h> 00044 #include <Vector.h> 00045 #include <Matrix.h> 00046 00047 class UniaxialMaterial; 00048 class Parameter; 00049 00050 class UniaxialFiber2d : public Fiber 00051 { 00052 public: 00053 UniaxialFiber2d (); 00054 UniaxialFiber2d (int tag, UniaxialMaterial &theMat, double Area, double position); 00055 ~UniaxialFiber2d(); 00056 00057 00058 int setTrialFiberStrain(const Vector &vs); 00059 Vector &getFiberStressResultants (void); 00060 Matrix &getFiberTangentStiffContr (void); 00061 00062 int commitState(void); 00063 int revertToLastCommit(void); 00064 int revertToStart(void); 00065 00066 Fiber *getCopy(void); 00067 int getOrder(void); 00068 const ID &getType(void); 00069 00070 int sendSelf(int cTag, Channel &theChannel); 00071 int recvSelf(int cTag, Channel &theChannel, FEM_ObjectBroker &theBroker); 00072 void Print(OPS_Stream &s, int flag =0); 00073 00074 Response *setResponse(const char **argv, int argc, Information &info, OPS_Stream &s); 00075 int getResponse(int responseID, Information &info); 00076 00077 void getFiberLocation(double &y, double &z); 00078 UniaxialMaterial *getMaterial(void) {return theMaterial;}; 00079 double getArea(void) {return area;}; 00080 00081 int setParameter(const char **argv, int argc, Parameter ¶m); 00082 int updateParameter(int parameterID, Information &info); 00083 int activateParameter(int parameterID); 00084 00085 const Vector &getFiberSensitivity(int gradNumber, bool cond); 00086 int commitSensitivity(const Vector &dedh, int gradNumber, 00087 int numGrads); 00088 00089 protected: 00090 00091 private: 00092 UniaxialMaterial *theMaterial; // pointer to a material 00093 double area; // area of the fiber 00094 double y; // fiber location 00095 00096 static Matrix ks; // static class wide matrix object for returns 00097 static Vector fs; // static class wide vector object for returns 00098 00099 static ID code; 00100 }; 00101 00102 00103 #endif 00104 00105 00106 00107 00108 00109
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