Influence of wheel-polygonal wear on the dynamic forces within the axle-box bearing of a high-speed train

Zhiwei Wang, Paul Allen, Guiming Mei, Ruichen Wang, Zhonghui Yin, Weihua Zhang

Research output: Contribution to journalArticle

Abstract

A three-dimensional vehicle-track coupled dynamics model, with the inclusion of the axle-box bearings, has been developed, which considers the coupling effects between the bearing and the vehicle components. Some non-linear factors, such as time-varying bearing stiffness, bearing clearance, wheel-polygonal wear and the non-linear wheel-rail contact forces, are also considered. Dynamic analysis has been implemented through numerical simulations that consider different amplitudes and harmonic orders of measured and idealised polygonal wheel wear. Both model analysis and validation were supported by field tests. Results show that the roller-raceway contact forces increases with vehicle speed and the amplitude of polygonal wear. However, the influence of wear upon the axle-box bearing is found to be small in the low-speed range, but at higher operating speeds, polygonal wear leads to a rapid increase in bearing contact forces and the potential for degradation. During vehicle operations, both high order (17th to 20th order) and lower order (1st to 4th order) wheel-polygonal wear patterns are generated. The former's influence on axle-box bearing forces is more significant. Hence, the identification and rectification of this order of wear should form part of maintenance practice and potentially also be considered in the design of axle-box bearings for high-speed trains.

LanguageEnglish
JournalVehicle System Dynamics
Early online date4 Jun 2019
DOIs
Publication statusE-pub ahead of print - 4 Jun 2019

Fingerprint

Bearings (structural)
Axles
Wheels
Wear of materials
Dynamic analysis
Rails
Dynamic models
Stiffness
Degradation

Cite this

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title = "Influence of wheel-polygonal wear on the dynamic forces within the axle-box bearing of a high-speed train",
abstract = "A three-dimensional vehicle-track coupled dynamics model, with the inclusion of the axle-box bearings, has been developed, which considers the coupling effects between the bearing and the vehicle components. Some non-linear factors, such as time-varying bearing stiffness, bearing clearance, wheel-polygonal wear and the non-linear wheel-rail contact forces, are also considered. Dynamic analysis has been implemented through numerical simulations that consider different amplitudes and harmonic orders of measured and idealised polygonal wheel wear. Both model analysis and validation were supported by field tests. Results show that the roller-raceway contact forces increases with vehicle speed and the amplitude of polygonal wear. However, the influence of wear upon the axle-box bearing is found to be small in the low-speed range, but at higher operating speeds, polygonal wear leads to a rapid increase in bearing contact forces and the potential for degradation. During vehicle operations, both high order (17th to 20th order) and lower order (1st to 4th order) wheel-polygonal wear patterns are generated. The former's influence on axle-box bearing forces is more significant. Hence, the identification and rectification of this order of wear should form part of maintenance practice and potentially also be considered in the design of axle-box bearings for high-speed trains.",
keywords = "Axle-box bearing, vehicle-track coupled dynamics, wheel polygonal wear, contact force, high-speed train, wheel-polygonal wear",
author = "Zhiwei Wang and Paul Allen and Guiming Mei and Ruichen Wang and Zhonghui Yin and Weihua Zhang",
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Influence of wheel-polygonal wear on the dynamic forces within the axle-box bearing of a high-speed train. / Wang, Zhiwei; Allen, Paul; Mei, Guiming; Wang, Ruichen; Yin, Zhonghui; Zhang, Weihua.

In: Vehicle System Dynamics, 04.06.2019.

Research output: Contribution to journalArticle

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