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Authors
Advisor(s)
Abstract(s)
The dynamic analysis of railway systems using multibody systems formulation is nowadays a reliable tool for several studies, in which the wheelrail contact interaction has significant importance. The definition of contacting geometries affects directly the dynamic response of the system. For sake of simplicity and computational efficiency, some authors simplify the wheel profile to avoid its concave part. This work intends to study the impact of utilizing a simplified non-conformal profile instead of a real wheel profile. For this purpose, an Hertzian-based contact force model is used to compute either the normal and creep forces. A wheelset rolling over a straight track is used as demonstration case. The results show that although the location of the contact points is similar, the use of simplified wheel profile may have an extensive impact on the dynamic response of the system.
Description
Keywords
Railway dynamics Wheel profile Conformal contact
Citation
MARQUES, Filipe; [et al] – Utilization of non-conformal wheel surfaces for railway Dynamics. In Advances in Mechanism and Machine Science – Proceedings of the 15th IFToMM World Congress on Mechanism and Machine Science. Krakow, Poland: Springer, 2019. ISBN 978-3-030-20131-9. Vol. 73, pp. 3291-3300
Publisher
Springer