DrainPinch1Material.cppGo 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: 2001/10/01 17:08:54 $ 00023 // $Source: /usr/local/cvs/OpenSees/SRC/material/uniaxial/drain/DrainPinch1Material.cpp,v $ 00024 00025 // Written: MHS 00026 // Created: June 2001 00027 // 00028 // Description: This file contains the class definition for 00029 // DrainPinch1Material. 00030 00031 #include <DrainPinch1Material.h> 00032 #include <Vector.h> 00033 00034 DrainPinch1Material::DrainPinch1Material(int tag, 00035 double E, double fyp, double fyn, double alpha, 00036 double ecaps, double ecapk, double ecapa, double ecapd, 00037 double cs, double ck, double ca, double cd, 00038 double capSlope, double capDispP, double capDispN, 00039 double fpp, double fpn, double pinch, double res, 00040 double b): 00041 // 15 history variables and 19 material parameters 00042 DrainMaterial(tag, MAT_TAG_DrainPinch1, 15, 19, b) 00043 { 00044 data[0] = E; 00045 data[1] = fyp; 00046 data[2] = fyn; 00047 data[3] = alpha; 00048 data[4] = ecaps; 00049 data[5] = ecapk; 00050 data[6] = ecapa; 00051 data[7] = ecapd; 00052 data[8] = cs; 00053 data[9] = ck; 00054 data[10] = ca; 00055 data[11] = cd; 00056 data[12] = capSlope; 00057 data[13] = capDispP; 00058 data[14] = capDispN; 00059 data[15] = fpp; 00060 data[16] = fpn; 00061 data[17] = pinch; 00062 data[18] = res; 00063 00064 // Initialize history variables 00065 this->revertToStart(); 00066 } 00067 00068 DrainPinch1Material::DrainPinch1Material(int tag, const Vector &input, double b): 00069 // 15 history variables and 19 material parameters 00070 DrainMaterial(tag, MAT_TAG_DrainPinch1, 15, 19, b) 00071 { 00072 for (int i = 0; i < 19; i++) 00073 data[i] = input(i); 00074 00075 // Initialize history variables 00076 this->revertToStart(); 00077 } 00078 00079 DrainPinch1Material::DrainPinch1Material(void): 00080 DrainMaterial(0, MAT_TAG_DrainPinch1, 15, 19) 00081 { 00082 // Does nothing 00083 } 00084 00085 DrainPinch1Material::~DrainPinch1Material(void) 00086 { 00087 // Does nothing 00088 } 00089 00090 int 00091 DrainPinch1Material::revertToStart(void) 00092 { 00093 double dyp = data[1]/data[0]; // fyp/E 00094 double dyn = data[2]/data[0]; // fyn/E 00095 00096 hstv[0] = data[0]; // E 00097 hstv[1] = data[0]; // E 00098 hstv[2] = dyp; 00099 hstv[3] = dyn; 00100 hstv[4] = 0.0; 00101 hstv[5] = dyp; 00102 hstv[6] = dyn; 00103 hstv[7] = data[1]; // fyp 00104 hstv[8] = data[2]; // fyn 00105 hstv[9] = data[13]; // capDispP 00106 hstv[10] = data[14]; // capDispN 00107 hstv[11] = 0.0; 00108 hstv[12] = 0.0; 00109 hstv[13] = 0.0; 00110 hstv[14] = data[0]; // E 00111 00112 // Set trial history variables to committed values 00113 for (int i = 0; i < 15; i++) 00114 hstv[i+15] = hstv[i]; 00115 00116 return 0; 00117 } 00118 00119 UniaxialMaterial* 00120 DrainPinch1Material::getCopy(void) 00121 { 00122 Vector input(data, 19); 00123 00124 DrainPinch1Material *theCopy = 00125 new DrainPinch1Material(this->getTag(), input, beto); 00126 00127 return theCopy; 00128 }
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