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Research on rail wear of small radius curve in EMU depot
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Hao Li, Jialin Sun, Guotang Zhao
Railway Sciences | 2022, 1(1) : 16 - 39
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Railway Sciences | 2022, 1(1): 16-39
• Research paper •
Research on rail wear of small radius curve in EMU depot
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Hao Li, Jialin Sun, Guotang Zhao
Affiliations
  • The Ministry of Construction, China Railway Guangzhou Bureau Group Co., Ltd, Guangzhou, China
  • Infrastructure Testing Institute, China Academy of Railway Sciences Corporation Limited, Beijing, China
  • Ministry of science, Technology and Information Technology, China State Railway Group Co., Ltd, Beijing, China
Published: 2022-05-10 doi: 10.1108/RS-04-2022-0014
Outline
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Purpose

With the help of multi-body dynamics software UM, the paper uses Kik-Piotrowski model to simulate wheel-rail contact and Archard wear model for rail wear.

Design/methodology/approach

The CRH5 vehicle-track coupling dynamics model is constructed for the wear study of rails of small radius curves, namely 200 and 350 m in Guangzhou East EMU Depot and those 250 and 300 m radius in Taiyuan South EMU Depot.

Findings

Results show that the rail wear at the straight-circle point, the curve center point and the circle-straight point follows the order of center point > the circle-straight point > the straight-circle point. The wear on rail of small radius curves intensifies with the rise of running speed, and the wearing trend tends to fasten as the curve radius declines. The maximum rail wear of the inner rail can reach 2.29 mm, while that of the outer rail, 10.11 mm.

Originality/value

With the increase of the train passing number, the wear range tends to expand. The rail wear decreases with the increase of the curve radius. The dynamic response of vehicle increases with the increase of rail wear, among which the derailment coefficient is affected the most. When the number of passing vehicles reaches 1 million, the derailment coefficient exceeds the limit value, which poses a risk of derailment.

EMU depot  /  Small radius curve  /  Rail wear  /  Vehicle-track coupling dynamics  /  Dynamic response
Hao Li, Jialin Sun, Guotang Zhao. Research on rail wear of small radius curve in EMU depot[J]. Railway Sciences, 2022 , 1 (1) : 16 -39 . DOI: 10.1108/RS-04-2022-0014
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Funding
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  • National Natural Science Foundation of China(51778050)
  • Task of Science and Technology R&D Program of China Railway Corporation(P2018G003)
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Year 2022 volume 1 Issue 1
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Article Info
doi: 10.1108/RS-04-2022-0014
  • Receive Date：2022-01-17
  • Online Date：2026-06-11
  • Published：2022-05-10
Article Data
Affiliations
History
  • Received：2022-01-17
  • Revised：2022-02-28
  • Accepted：2022-04-14
Funding
National Natural Science Foundation of China(51778050)
Task of Science and Technology R&D Program of China Railway Corporation(P2018G003)
Affiliations
    The Ministry of Construction, China Railway Guangzhou Bureau Group Co., Ltd, Guangzhou, China
    Infrastructure Testing Institute, China Academy of Railway Sciences Corporation Limited, Beijing, China
    Ministry of science, Technology and Information Technology, China State Railway Group Co., Ltd, Beijing, China

Corresponding:

Hao Li can be contacted at:
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红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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