Effect of rail profile wear on vehicle operation performance in high-speed line
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 14 November 2023
Issue publication date: 22 November 2023
Abstract
Purpose
With the continuous increase in the operating speed of high-speed trains, the wear and tear of rails on high-speed lines has also gradually deteriorated. At present, the phenomenon of asymmetric wear of rails in high-speed lines is relatively serious. This paper aims to analyze the effect of three typical rail profile wear on vehicle operation performance.
Design/methodology/approach
To solve this problem, by analyzing the wheel-rail contact relationship and establishing a vehicle dynamics model, the influence of worn typical rail profiles on the vehicle’s dynamic performance and carbody abnormal vibration is analyzed. Additionally, the effect of worn rail profiles on wheel wear is analyzed using a wear model.
Findings
The results showed that, compared to the standard rail profile, the three typical wear rail profiles show an increase in normal contact stress. The ride and safety indexes of the three rail profiles also increased compared with the CHN60 profile. The rail Profile 3 does not affect carbody vibration, while Profile 1 and Profile 2 can cause hunting vibrations of the carbody, with the main vibration frequencies around 7 Hz. The wheel wear depths under three typical rail profiles are 1.185 mm, 1.11 mm and 1.058 mm.
Originality/value
The effect of the measured typical rail profiles on the vehicle’s performance is analyzed, particularly in terms of abnormal vibrations and wheel wear. This analysis can provide guidance for the long-term maintenance of the rail system.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/ILT-08-2023-0270/
Keywords
Acknowledgements
Funding: This project is supported by the open project of State Key Laboratory of Performance Monitoring and Protecting of Rail Transit Infrastructure, East China Jiaotong University [Grant Number: HJGZ2022114, HJGZ2022103], the National Natural Science Foundation of China [Grant Number: 52302467]; China Railway Science: [Grant Number: 2022YJ238]. Chongqing Key Laboratory for Public Transportation Equipment Design and System Integration Open Fund [Grant number: CKLPTEDSI-KFKT-202110].
Citation
Qi, Y., Li, S., Chen, Z. and Wang, R. (2023), "Effect of rail profile wear on vehicle operation performance in high-speed line", Industrial Lubrication and Tribology, Vol. 75 No. 10, pp. 1188-1198. https://doi.org/10.1108/ILT-08-2023-0270
Publisher
:Emerald Publishing Limited
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