Parametric study of wheel transitions at railway crossings

October 12, 2015 in

Journal Paper


Author(s)
Chang Wan
Valeri Markine


ISSN
DOI 10.1080/00423114.2015.1089358

Theme(s)




Journal
Vehicle System Dynamics
Volume 53, Issue 12, Pages 1876-1901

Publishing date: October 12, 2015

Keywords
design of experiments, multi-body dynamics, rail geometry, railway crossings, wheel transition

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Abstract

Vehicle–track interaction at railway crossings is complex due to the discontinuity of the crossings. In this study, the effect of the local crossing geometry, the track alignment, and the wheel profiles on the wheel transition behaviour is investigated using the multi-body system software package VI-Rail. The transition behaviour is evaluated based on the location of the transition point along the crossing (and the location of impact), the contact pressure and the energy dissipation during the wheel–rail contact. A detailed parametric study of the crossing geometry has been performed, through which the most effective parameters for defining the crossing geometry are identified. These parameters are the cross-sectional shape of the nose rail, which can be tuned by one variable, and the vertical distance between the top of the wing rail and the nose rail. Additionally, a parametric study on the interaction influence of the crossing geometry, the track alignment and the wheel profile is performed using the design of experiments method with a two-level full factorial design. The longitudinal height profile of the crossing and the wheel profile are the most significant factors.