Non-linear wheelset model to predict derailment

Imtiaz Haque, Patrick McGirt, Mark L. Nagurka

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations


The performance of a rail vehicle is a direct function of the ability of its wheelsets to negotiate the track. This paper presents the results from a detailed dynamic simulation study of wheelset motions with special emphasis on safety-related behavior. The wheelset is assumed to maintain continuous wheel-rail contact as it traverses smooth track that may be tangent or curved, and rigid or flexible. The model accounts for nonlinearities due to wheel-rail profile geometry and friction (creep) force and the longitudinal translation of the contact patch as a function of wheelset yaw angle. The results demonstrate non-linear features, such as limit cycles, and extremes of behavior including wheel-lift, and wheel-climb. The model has also been exercised to generate steady-state force and moment characteristics.

Original languageEnglish
Number of pages8
StatePublished - 1 Dec 1996
Externally publishedYes
EventProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition - Atlanta, GA, USA
Duration: 17 Nov 199622 Nov 1996


ConferenceProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition
CityAtlanta, GA, USA

ASJC Scopus subject areas

  • Software
  • Mechanical Engineering


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