Running-in evaluation after a rail grinding process using a pin-on-disk tribometer

Vásquez-Chacón, Irvin Alari; Sánchez-Tizapantzi, Pedro; Gómez–Guarneros, Mario Alberto; Aguilar, Mauro Alberto Enciso; Gallardo-Hernández, Ezequiel Alberto

doi:10.1016/j.wear.2023.204686

Cited by 4 publications

(1 citation statement)

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“…Therefore, the friction coefficient is often in a non-stationary state. A large number of experimental studies have shown that scientific lubrication between wheels and rails can reduce both traction power and wheel-rail wear significantly (Tomeoka et al , 2002; Spiryagin et al , 2010; Vásquez-Chacón et al , 2023). Therefore, how to effectively control the friction coefficient has been a hot research topic in the academic community.…”

Section: Introductionmentioning

confidence: 99%

Influence of wheel profile wear coupled with friction coefficient on the dynamic response of subway vehicles

2023

ILT

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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.

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Section: Introductionmentioning

confidence: 99%