摘要
This research aimed to overcome challenges such as high costs,lengthy optimization time,and low efficiency in resolving issues related to wheel-rail contact,rail wear,and vehicle dynamics.Based on the wheel-rail contact parameters,an optimal design method for rail grinding target profile is proposed from wear profile measurement to grinding profile design according to the actual railway track and vehicle operating conditions.We utilized Isight to create a simulation test and developed an RBF proxy model that incorporated both mechanical and geometric aspects of wheel-rail contact.By integrating rail modeling,wheel-rail contact analysis,and multi-objective optimization,we established a rail grinding optimization model that was solved using the NSGA-II algorithm.After optimization,the study achieved a 31.863%reduction in average contact stress,a 70.5%reduction in matching wear work,and a 100.391%increase in the difference in rolling radius between the wheel and rail.
基金
Supported by Fundamental Research Funds for the Central Universities(Grant No.2019JBM050).
作者简介
Zhiwei Wu born in 1994,is currently a PhD candidate at Key Laboratory of Vehicle Advanced Manufacturing,Measuring and Control Technology,Ministry of Education,Beijing Jiaotong University,China.He received his master degree from North China University of Technology,China,in 2020.Tel:+86-18811754144;Correspondence:Wengang Fan born in 1985,is currently a professor at Beijing Jiaotong University,China.He received his PhD degree from Beijing Jiaotong University,China,in 2012.His main research directions are rail grinding technology and equipment,digital manufacturing technology and equipment.wgfan@bjtu.edu.cn;Jiang Li born in 1997,is currently a PhD candidate at Key Laboratory of Vehicle Advanced Manufacturing,Measuring and Control Technology,Ministry of Education,Beijing Jiaotong University,China.He received his master degree from Beijing Information Science and Technology University,China,in 2022;Zhiao Liu born in 1999,is currently a master candidate at Key Laboratory of Vehicle Advanced Manufacturing,Measuring and Control Technology,Ministry of Education,Beijing Jiaotong University,China.He received his bachelor degree from Dalian Jiaotong University,China,in 2022;Jiating Yang born in 1997,is currently a master candidate at Key Laboratory of Vehicle Advanced Manufacturing,Measuring and Control Technology,Ministry of Education,Beijing Jiaotong University,China.He received his bachelor degree from Beijing Jiaotong University,China,in 2019.
