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Research on the generation mechanism for typical out-of-round wear of locomotive wheels based on wheel-rail slip contact.

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Title: Research on the generation mechanism for typical out-of-round wear of locomotive wheels based on wheel-rail slip contact.
Authors: Kang, Xi1 (AUTHOR), Lu, Sheng1 (AUTHOR), Cui, Xiaolu2 (AUTHOR), Zhao, Yang1 (AUTHOR) zhaoyang@cqupt.edu.cn, Cao, Zhengfeng1 (AUTHOR), Chen, Xiang1 (AUTHOR) chenxiang@cqupt.edu.cn
Source: Vehicle System Dynamics. Jun2026, Vol. 64 Issue 6, p1120-1141. 22p.
Subjects: Automobile wheels, Vibration (Mechanics), Rolling contact fatigue, Multibody systems, Finite element method
Abstract: The current study aims to examine how wheel-rail slip affects the formation of typical out-of-round wear of locomotive wheels. The locomotive wheelset-track system (LWTS) was modelled using finite elements, and the friction-induced vibration (FIV) of the system under the condition of wheel-rail slip contact (WRSC) was predicted. Furthermore, the multi-body dynamics model of the locomotive vehicle-track system (LVTS) was established to simulate the fluctuation of the wheel-rail normal contact force (WRNCF) under the excitation of wheel flats. Then, wheel uneven wear was analysed and compared with the field measurements. Additionally, the effects of wheel-rail friction state, axle load, stiffness and damping of the fastener rubber pad (FRP), flat distribution, flat length and vehicle speed on wheel out-of-round wear were studied. At a locomotive speed of 70 75 km/h, the results demonstrate that the WRSC excites the unstable FIVs of 83 Hz and 122 Hz, which leads to wheel 17th 24th order polygonal wear. Wheel out-of-round wear may occur more frequently as a result of an increase in the instability tendency of the LWTS under the WRSC. The wheel-rail impact excited by the flats can lead to small peaks after the maximum peak of the WRNCF, resulting in wheel 6th 7th order polygonal wear. [ABSTRACT FROM AUTHOR]
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Database: Engineering Source
Description
Abstract:The current study aims to examine how wheel-rail slip affects the formation of typical out-of-round wear of locomotive wheels. The locomotive wheelset-track system (LWTS) was modelled using finite elements, and the friction-induced vibration (FIV) of the system under the condition of wheel-rail slip contact (WRSC) was predicted. Furthermore, the multi-body dynamics model of the locomotive vehicle-track system (LVTS) was established to simulate the fluctuation of the wheel-rail normal contact force (WRNCF) under the excitation of wheel flats. Then, wheel uneven wear was analysed and compared with the field measurements. Additionally, the effects of wheel-rail friction state, axle load, stiffness and damping of the fastener rubber pad (FRP), flat distribution, flat length and vehicle speed on wheel out-of-round wear were studied. At a locomotive speed of 70 75 km/h, the results demonstrate that the WRSC excites the unstable FIVs of 83 Hz and 122 Hz, which leads to wheel 17th 24th order polygonal wear. Wheel out-of-round wear may occur more frequently as a result of an increase in the instability tendency of the LWTS under the WRSC. The wheel-rail impact excited by the flats can lead to small peaks after the maximum peak of the WRNCF, resulting in wheel 6th 7th order polygonal wear. [ABSTRACT FROM AUTHOR]
ISSN:00423114
DOI:10.1080/00423114.2025.2473458