Utilization of Non-Conformal Wheel Surfaces for Railway Dynamics

  • Filipe MarquesEmail author
  • Hugo Magalhães
  • João Pombo
  • Jorge Ambrósio
  • Paulo Flores
Conference paper
Part of the Mechanisms and Machine Science book series (Mechan. Machine Science, volume 73)


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.


Railway Dynamics Wheel Profile Conformal Contact 


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The first and second authors are supported by the Portuguese Foundation for Science and Technology (FCT) under grant PD/BD/114154/2016, MIT Portugal Program, and SFRH/BD/96695/2013, respectively. This work has been supported by FCT with the reference project POCI-01-0145-FEDER-028424, by FEDER funds through the COMPETE 2020 - Programa Operacional Competitividade e Internacionalização. This work is also supported by FCT with the reference project UID/EEA/04436/2019.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.CMEMS-UMinho, Universidade do MinhoBragaPortugal
  2. 2.LAETA, IDMEC, Instituto Superior Técnico, Universidade de LisboaLisbonPortugal
  3. 3.Institute of Railway Research, School of Computing and EngineeringUniversity of HuddersfieldHuddersfieldUK
  4. 4.ISEL, IPLLisboaPortugal

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