Tehran Subway Rolling Stock Dynamic Analysis

In this article with simulation of Tehran subway second type rolling stock, dynamic performance of this train has been studied. Dynamic simulation of Tehran subway has been simulated in UM (universal mechanism) package. At first train bogie parts has been drawn in 3D software package Solid works and moment of inertia and mass of each part has been extracted. In Solid works software the bogie part has been attached and complete model of bogie imported to Dynamic simulation software. In Dynamic simulation of Tehran subway rolling stock, primary and secondary suspensions were differ from conventional bogies that has been used in Iranian railway and simulation should be done exactly. After this work dynamic simulation has been done for hunting speed of wagon and acceleration of wagon body has been obtained in vertical and lateral directions. with the result that has been extracted from dynamic performance of train, the effect of hunting speed on lateral wheelset lateral displacement and angle of attack in left wheel of first wheelset has been comprised .ride index criteria for calculation of Tehran subway has been explained .for simulation of train, track irregularity inputted in UM software for ride index has been calculated in lateral and vertical directions. According to secondary suspension of Tehran subway train body acceleration and ride comfort of this train simulated. According to ride comfort result of this train , the result of Tehran subway rolling stock has been compared with standard value .