PySimple1.hGo to the documentation of this file.00001 /* ********************************************************************* 00002 ** Module: PySimple1.h 00003 ** 00004 ** Purpose: Provide a simple p-y spring for OpenSees 00005 ** 00006 ** 00007 ** Developed by Ross W. Boulanger 00008 ** (C) Copyright 2001, All Rights Reserved. 00009 ** 00010 ** ****************************************************************** */ 00011 00012 // $Revision: 1.0 00013 // $Date: 2001/10/15 00014 // $Source: /OpenSees/SRC/material/uniaxial/PySimple1.h 00015 00016 #ifndef PYSIMPLE1_H 00017 #define PYSIMPLE1_H 00018 00019 // Written: RWB 00020 // Created: Oct 2001 00021 // tested and checked: Boris Jeremic (jeremic@ucdavis.edu) Spring 2002 00022 // 00023 // Description: This file contains the class definition for PySimple1. 00024 // 00025 00026 #include <UniaxialMaterial.h> 00027 00028 class PySimple1 : public UniaxialMaterial 00029 { 00030 public: 00031 PySimple1(int tag, int classtag, int soilType, double pult, double y50, 00032 double drag, double dashpot); 00033 PySimple1(); 00034 ~PySimple1(); 00035 00036 00037 const char *getClassType(void) const {return "PySimple1";}; 00038 00039 int setTrialStrain(double y, double yRate); 00040 double getStrain(void); 00041 double getStress(void); 00042 double getTangent(void); 00043 double getInitialTangent(void); 00044 double getStrainRate(void); 00045 double getDampTangent(void); 00046 00047 int commitState(void); 00048 int revertToLastCommit(void); 00049 int revertToStart(void); 00050 00051 UniaxialMaterial *getCopy(void); 00052 00053 int sendSelf(int commitTag, Channel &theChannel); 00054 int recvSelf(int commitTag, Channel &theChannel, 00055 FEM_ObjectBroker &theBroker); 00056 00057 void Print(OPS_Stream &s, int flag =0); 00058 00059 00060 protected: 00061 00062 // Material parameters 00063 int soilType; // Soil type = 1 for soft clay 00064 double pult; // Spring capacity 00065 double y50; // y at 50% of pult 00066 double drag; // ratio of max gap drag force to pult 00067 double yref; // reference point for Near Field component 00068 double np; // exponent for hardening shape of Near Field component 00069 double Elast; // p/pult when yielding first occurs in virgin loading 00070 double nd; // exponent for hardening shape of drag component 00071 double dashpot; // dashpot on the far-field (elastic) component 00072 00073 00074 private: 00075 00076 // Functions to get p & y for each component individually 00077 void getGap(double ylast, double dy, double dy_old); 00078 void getClosure(double ylast, double dy); 00079 void getDrag(double ylast, double dy); 00080 void getNearField(double ylast, double dy, double dy_old); 00081 void getFarField(double y); 00082 00083 // Generated parameters or constants (not user input) 00084 double NFkrig; // stiffness of the "rigid" portion of Near Field spring 00085 00086 // Committed history variables for entire p-y material 00087 double Cy; // Committed p 00088 double Cp; // Committed y 00089 double Ctangent; // Committed tangent 00090 00091 // Trial history variables for entire p-y material 00092 double Ty; // Trial p 00093 double Tp; // Trial y 00094 double Ttangent; // Trial tangent 00095 double TyRate; // Trial velocity 00096 00097 // Committed internal parameters for the NearField rigid-plastic component 00098 double CNFpinr; // p at start of current plastic loading cycle - right side 00099 double CNFpinl; // - left side 00100 double CNFyinr; // y at start of current plastic loading cycle - right side 00101 double CNFyinl; // - left side 00102 double CNF_p; // current p 00103 double CNF_y; // current y 00104 double CNF_tang; // tangent 00105 00106 // Trial internal parameters for the NearField rigid-plastic component 00107 double TNFpinr; // p at start of current plastic loading cycle - right side 00108 double TNFpinl; // - left side 00109 double TNFyinr; // y at start of current plastic loading cycle - right side 00110 double TNFyinl; // - left side 00111 double TNF_p; // current p 00112 double TNF_y; // current y 00113 double TNF_tang; // tangent 00114 00115 // Committed internal parameters for the Drag component 00116 double CDrag_pin; // p at start of current plastic loading cycle 00117 double CDrag_yin; // y at start of current plastic loading cycle 00118 double CDrag_p; // current p 00119 double CDrag_y; // current y 00120 double CDrag_tang; // tangent 00121 00122 // Trial internal parameters for the Drag component 00123 double TDrag_pin; // p at start of current plastic loading cycle 00124 double TDrag_yin; // y at start of current plastic loading cycle 00125 double TDrag_p; // current p 00126 double TDrag_y; // current y 00127 double TDrag_tang; // tangent 00128 00129 // Committed internal parameters for the Closure component 00130 double CClose_yleft; // left reference point 00131 double CClose_yright; // right reference point 00132 double CClose_p; // current p 00133 double CClose_y; // current y 00134 double CClose_tang; // tangent 00135 00136 // Trial internal parameters for the Closure component 00137 double TClose_yleft; // left reference point 00138 double TClose_yright; // right reference point 00139 double TClose_p; // current p 00140 double TClose_y; // current y 00141 double TClose_tang; // tangent 00142 00143 // Committed internal parameters for the Gap (Drag + Closure) 00144 double CGap_y; // y 00145 double CGap_p; // combined p 00146 double CGap_tang; // combined tangent 00147 00148 // Trial internal parameters for the Gap (Drag + Closure) 00149 double TGap_y; // y 00150 double TGap_p; // combined p 00151 double TGap_tang; // combined tangent 00152 00153 // Committed internal parameters for the Far Field component 00154 double CFar_y; // y 00155 double CFar_p; // current p 00156 double CFar_tang; // tangent 00157 00158 // Trial internal parameters for the Far Field component 00159 double TFar_y; // y 00160 double TFar_p; // current p 00161 double TFar_tang; // tangent 00162 00163 double initialTangent; 00164 }; 00165 00166 00167 #endif
Generated on Mon Oct 23 15:05:21 2006 for OpenSees by |
opensees-support @ berkeley.edu
Supported by the National Science Foundation
©2006, UC Regents