Influence of wheel profile wear coupled with friction coefficient on the dynamic response of subway vehicles
Industrial Lubrication and Tribology
ISSN: 0036-8792
Article publication date: 18 July 2023
Issue publication date: 28 July 2023
Abstract
Purpose
The purpose of this study is to match appropriate friction coefficients for subway operational vehicles, considering the dynamic variations of wheel profile wear.
Design/methodology/approach
This study combines experimental testing and numerical simulation to investigate the influence of wheel profile wear coupled with the friction coefficient on the vehicle dynamic response.
Findings
For the test route in this paper, it is recommended to control the friction coefficient on straight sections between 0.25 and 0.3, and on curved sections between 0.2 and 0.3. This satisfies the required adhesion coefficient for normal train traction and braking, while also ensuring the straight running performance and curve negotiation performance of the vehicle.
Practical implications
Reasonable friction coefficient ranges are proposed for straight and curved track lines to improve the operational safety and economy of the vehicles. Moreover, this study can provide a theoretical basis and reference direction for developing anti-wear measures for rail vehicles operating on fixed routes.
Originality/value
Considering the wear characteristics of operating vehicles and the dynamic changes in the wear profile, this paper explores the adaptability of different degrees of wheel wear profiles to different friction coefficients. Based on the response characteristics of vehicle dynamics, reasonable lubrication recommendations are proposed for this operating vehicle.
Keywords
Acknowledgements
The authors are grateful to the anonymous reviewers for providing insightful comments aimed at improving the paper.
Funding: This research was funded by Natural Science Foundation of Shanghai (grant number 20ZR1460700) and Shanghai Collabrative Innovation Research Center for Multi-network & Multi-model Rail Transit.
Declaration of conflicting interests: The authors declare that they have no conflicts of interest.
Citation
Li, H. and Li, L. (2023), "Influence of wheel profile wear coupled with friction coefficient on the dynamic response of subway vehicles", Industrial Lubrication and Tribology, Vol. 75 No. 6, pp. 679-690. https://doi.org/10.1108/ILT-04-2023-0098
Publisher
:Emerald Publishing Limited
Copyright © 2023, Emerald Publishing Limited