科技创新与应用2025，Vol.15Issue(21)：19-24,6.DOI:10.19981/j.CN23-1581/G3.2025.21.004
摩擦系数对薄轮缘车轮通过曲线段磨耗的影响
王子旭 1何榕培 1纪伟明 1柳达千 1陈思明 1赵泳皓 1方琴2
作者信息
- 1. 中国铁路西安局集团有限公司西安机务段,西安 710000
- 2. 合肥市轨道交通集团运营有限公司,合肥 230000
- 折叠
摘要
Abstract
Thin-rim wheels have become the main form of train wheels.In order to reduce its wear on curved sections,the effect of curved rail lubrication on wheel wear was studied.By establishing a vehicle-track coupled dynamic model,the wear laws of worn wheels under different curve radii and track bottom slopes are analyzed when the wheel-rail friction coefficients are changed.The results show that the wheel-rail contact performance decreases after wearing,and the contact characteristics are the worst when matching the worn wheel-new track,but the maximum values of derailment coefficient and wheel weight reduction rate decrease by 57.9%and 9.4%respectively,indicating that trains with thin rims are more difficult to derail when crossing curves.Reducing the wheel-rail friction coefficient can effectively reduce wheel wear,and the smaller the curve radius,the more obvious the effect,while the rail bottom slope has less influence on the wear index.Asymmetric lubrication control of inner and outer rails is more conducive to friction reduction.When the friction coefficient of the inner rail is fixed,the wear index of the inner and outer wheels decreases as the friction coefficient of the outer rail decreases,and the friction reduction rate of the outer wheels is faster.When the wheel-rail friction coefficient drops to 0.1,the wheel fatigue factor is less than 0,and surface fatigue is not easy to occur.Based on the simulation results,measures such as asymmetric friction control or reducing the wheel-rail friction coefficient to 0.1 are recommended to reduce rim wear and extend wheel life,providing theoretical reference and basis for improving economy.关键词
轮缘磨耗/轮轨匹配/轮轨润滑/磨耗指数/疲劳因子/减磨措施Key words
rim wear/wheel-rail matching/wheel-rail lubrication/wear index/fatigue factor/wear-reducing measures分类
交通工程引用本文复制引用
王子旭,何榕培,纪伟明,柳达千,陈思明,赵泳皓,方琴..摩擦系数对薄轮缘车轮通过曲线段磨耗的影响[J].科技创新与应用,2025,15(21):19-24,6.
