Utilization of Non-Conformal Wheel Surfaces for Railway Dynamics

F. Marques, Hugo Pacheco Magalhaes, Joao Pombo, Jorge Ambrsio, Paulo Flores

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Citations (Scopus)


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.
Original languageEnglish
Title of host publicationAdvances in Mechanism and Machine Science
Subtitle of host publicationProceedings of the 15th IFToMM World Congress on Mechanism and Machine Science
EditorsTadeusz Uhl
Number of pages10
Publication statusPublished - 14 Jun 2019
EventThe 15th IFToMM World Congress - Krakow, Poland
Duration: 30 Jun 20194 Jul 2019
Conference number: 15

Publication series

NameMechanisms and Machine Science
ISSN (Print)2211-0984


ConferenceThe 15th IFToMM World Congress
Internet address


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