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Title: Modelling and evaluation of the hunting behaviour of a high-speed railway vehicle on curved track
Authors: Kumar V.
Rastogi V.
Pathak, Pushparaj Mani
Published in: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit
Abstract: Nowadays, rail transport is a very important part of the transportation network for any countries. The demand for high operational speed makes hunting a very common instability problem in railway vehicles. Hunting leads to discomfort and causes physical damage to carriage components, such as wheels, rails, etc. The causes of instability and derailment should be identified and eliminated at the designing stage of a train to ensure its safe operation. In most of the earlier studies on hunting behaviour, a simplified model with a lower degree of freedom were considered, which resulted in incorrect results in some instances. In this study, a complete bond graph model of a railway vehicle with 31 degrees of freedom is presented to determine the response of a high-speed railway vehicle. For this purpose, two wheel–rail contacts grounded on a flange contact and Kalker’s linear creep theory are implemented. The model is simulated to observe the effects of suspension elements on the vehicle’s critical hunting velocity. It is observed that the critical hunting speed is extremely sensitive to the primary longitudinal and lateral springs. Other primary and secondary springs and dampers also affect the critical speed to some extent. However, the critical hunting velocity is insensitive to vertical suspension elements for both the primary and secondary suspensions. Also, the critical speed is found to be inversely related to the conicity of the wheel. © IMechE 2018.
Citation: Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 233(2): 220-236
Issue Date: 2019
Publisher: SAGE Publications Ltd
Keywords: bond graph
curve track
hunting speed
lateral stability
Railway vehicle
ISSN: 9544097
Author Scopus IDs: 57194336500
Author Affiliations: Kumar, V., Department of Mechanical Engineering, Sant Longowal Institute of Engineering and Technology, Sangrur, India
Rastogi, V., Department of Mechanical Engineering, Delhi Technological University, New Delhi, India
Pathak, P.M., Department of Mechanical and Industrial Engineering, Indian Institute of Technology, Roorkee, India
Funding Details: 
Corresponding Author: Kumar, V.; Department of Mechanical Engineering, India; email:
Appears in Collections:Journal Publications [ME]

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