Study on the damage mechanism of high-speed turnout switch rails on large ramps

作     者：WANG Kai ZHU Hui XU Jing-mang BAI Tao-shuo TIAN Chun-xiang QIAN Yao GAO Yuan CHEN Rong WANG Ping LIU Ya-nan 王凯;朱辉;徐井芒;白涛硕;田春香;钱瑶;高原;陈嵘;王平;柳亚楠

作者机构：MOE Key Laboratory of High-speed Railway EngineeringSouthwest Jiaotong UniversityChengdu 610031China School of Civil EngineeringSouthwest Jiaotong UniversityChengdu 610031China China Academy of Railway Science Corporation LimitedBeijing 100081China China Railway Shanhaiguan Bridge Group Co.Ltd.Qinhuangdao 066205China 

基　　金：Project(2023YFB2604304)supported by the National Key R&D Program of China Projects(52122810,51978586,51778542,U23A20666,52472458)supported by the National Natural Science Foundation of China Project(K2022G034)supported by the Technology Research and Development Program of China National Railway Group Co.Ltd Projects(2020JDJQ0033,2023NSFSC0884)supported by Sichuan Province Science and Technology Support Program,China 

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

年 卷 期：2025年第32卷第1期

页      码：288-303页

摘      要：The influence of ramps on the transient rolling contact characteristics and damage mechanisms of switch rails remains unclear,presenting substantial challenges to the safety of railway *** this end,this paper constructs a transient rolling contact finite element model of the wheel-rail in switch under different ramps using ANSYS/LSDYNA method,and analyzes the tribology and damage characteristics when the wheel passes through the switch at a uniform *** research findings reveal that the vibration induced in the switch rail during the wheel load transfer process leads to a step-like increase in the contact ***,the interaction between the wheel and the rail primarily involves slip contact,which may significantly contribute to the formation of corrugations on the switch ***,the presence of large ramps exacerbates switch rail wear and rolling contact fatigue,resulting in a notable 13.2%increase in switch rail damage under 40‰ramp conditions compared to flat(0‰ramp)***,the large ramps can alter the direction of crack propagation,ultimately causing surface spalling of the ***,large ramps intensify the dynamic interactions during the wheel load transfer process,further aggravating the crack and spalling damage to the switch rails.

主 题 词：wear rolling contact fatigue high-speed turnout large ramps 

学科分类：08[工学] 0812[工学-测绘类] 

核心收录：

D　O　I：10.1007/s11771-025-5858-x

馆 藏 号：203157615...