ShearCurve.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: 1.2 $ 00022 // $Date: 2006/09/05 22:39:58 $ 00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/uniaxial/limitState/limitCurve/ShearCurve.h,v $ 00024 00025 // Written: kje 00026 // Created: 08/01 00027 // Modified: 09/02 00028 // Revision: A 00029 // 00030 // Description: This file contains the class definition for 00031 // ShearCurve. Defines the curve used by LimitStateMaterial 00032 // to determine if shear failure has occured according to empirical 00033 // drift capacity model by Elwood (2002). 00034 00035 00036 #ifndef ShearCurve_h 00037 #define ShearCurve_h 00038 00039 #define TAG_ShearCurve 1972 //???????? 00040 00041 #include <LimitCurve.h> 00042 00043 class Element; 00044 class Domain; 00045 00046 class ShearCurve : public LimitCurve 00047 { 00048 public: 00049 ShearCurve(int tag, int eleTag, Domain *theDomain, 00050 double rho, double fc, double b, double h, double d, double Fsw, //SDK 00051 double Kdeg, double Fres, 00052 int defType, int forType, 00053 int ndI = 0, int ndJ = 0, int dof = 0, int perpDirn = 0, 00054 double delta = 0.0); 00055 ShearCurve(); 00056 ~ShearCurve(); 00057 00058 LimitCurve *getCopy (void); 00059 00060 int checkElementState(double springForce); 00061 00062 double getDegSlope(void); 00063 double getResForce(void); 00064 double getUnbalanceForce(void); 00065 00066 int sendSelf(int commitTag, Channel &theChannel); 00067 int recvSelf(int commitTag, Channel &theChannel, 00068 FEM_ObjectBroker &theBroker); 00069 00070 void Print(OPS_Stream &s, int flag =0); 00071 00072 double findLimit(double input); 00073 00074 int revertToStart(void); 00075 int setParameter(const char **argv, int argc, Parameter ¶m); 00076 int updateParameter (int parameterID, Information &info); 00077 00078 00079 protected: 00080 00081 private: 00082 void setDegSlope(double V, double Dshear); // sets degrading slope upon shear failure 00083 // based on calc drift at axial failure 00084 // if Kdeg >= 0.0 00085 00086 // Associated beam-colum element information 00087 int eleTag; // tag for associated beam column element 00088 Element *theElement;// element pointer 00089 Domain *theDomain; // needed to retrieve element pointer 00090 00091 int stateFlag; // state of limitstate material 00092 // stateFlag = 0: prior to failure 00093 // stateFlag = 1: first time limit surface is reached 00094 // stateFlag = 2: on limit surface after first failure 00095 // stateFlag = 3: off limit surface after first failure 00096 00097 double Kdeg; // degrading slope for LimitState material after failure 00098 double Fres; // residual capacity for LimitState material after failure (assumed to be positive) 00099 int defType, forType; // flags indicating the axes of the limit state surface 00100 // defType = 1 for max chord rotation 00101 // = 2 for drift based on displ of nodes ndI and ndJ 00102 // forType = 0 for force in associated LimitState material 00103 // = 1 for shear from beam-column element 00104 // = 2 for axial load from beam-column element 00105 00106 double rho; // transverse reinforcement ratio Ast/b/s 00107 double fc; // concrete strength in psi 00108 double b; // column width 00109 double h; // column cross section height 00110 double d; // column effective depth 00111 00112 int ndI; // nodes for determining interstory drift 00113 int ndJ; 00114 int dof; // degree of freedom in which drift is desired 00115 int perpDirn; // perpendicular direction to dof to get distance between nodes 00116 double oneOverL;// 1/dist between nodes 00117 00118 double P; // axial load in associated beam-column element 00119 double Fsw; // Asw*fy*dcore/s 00120 00121 00122 00123 double delta; // drift ratio used to shift failure surface 00124 00125 double theta1; 00126 double theta4; 00127 double theta5; 00128 double sigma; 00129 double eps_normal; 00130 00131 }; 00132 00133 00134 #endif
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