Numerical simulation of wheel wear evolution for heavy haul railway

作     者：王璞 高亮 WANG Pu;GAO Liang

作者机构：School of Civil Engineering Beijing Jiaotong University Key Laboratory of Beijing for Railway Engineering (Beijing Jiaotong University) 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2015年第22卷第1期

页      面：196-207页

核心收录：

学科分类：082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0814[工学-土木工程] 082301[工学-道路与铁道工程] 0823[工学-交通运输工程] 

基　　金：Project(U1234211)supported of the National Natural Science Foundation of China Project(20120009110020)supported by the Specialized Research Fund for Ph.D. Programs of Foundation of Ministry of Education of China Project(SHGF-11-32)supported the Scientific and Technological Innovation Project of China Shenhua Energy Company Limited 

主　　题：heavy haul railway wheel wear evolution wheel rail rolling contact vehicle track coupling dynamics profile updating 

摘      要：The prediction of the wheel wear is a fundamental problem in heavy haul railway. A numerical methodology is introduced to simulate the wheel wear evolution of heavy haul freight car. The methodology includes the spatial coupling dynamics of vehicle and track, the three-dimensional rolling contact analysis of wheel-rail, the Specht s material wear model, and the strategy for reproducing the actual operation conditions of railway. The freight vehicle is treated as a full 3D rigid multi-body model. Every component is built detailedly and various contact interactions between parts are accurately simulated, taking into account the real clearances. The wheel-rail rolling contact calculation is carried out based on Hertz s theory and Kalker s FASTSIM algorithm. The track model is built based on field measurements. The material loss due to wear is evaluated according to the Specht s model in which the wear coefficient varies with the wear intensity. In order to exactly reproduce the actual operating conditions of railway,dynamic simulations are performed separately for all possible track conditions and running velocities in each iterative *** weight coefficients are introduced that determine the ratios of different cases and are obtained through site survey. For the wheel profile updating, an adaptive step strategy based on the wear depth is introduced, which can effectively improve the reliability and stability of numerical calculation. At last, the wear evolution laws are studied by the numerical model for different wheels of heavy haul freight vehicle running in curves. The results show that the wear of the front wheelset is more serious than that of the rear wheelset for one bogie, and the difference is more obvious for the outer wheels. The wear of the outer wheels is severer than that of the inner wheels. The wear of outer wheels mainly distributes near the flange and the root; while the wear of inner wheels mainly distributes around the nominal rolling