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The demand to investigate and predict the surface deterioration phenomena in the wheel-rail interface necessitates fast and accurate contact modelling. During the past twenty years, there have been attempts to determine more realistic contact patch and stress distributions using fast non-iterative methods. The main aim of this work is to compare some of these state-of-the-art, non-elliptic contact models available in the literature. This is considered as the first step in introducing a fast accurate non-elliptic contact model that can be used on-line with vehicle dynamic analysis. Three contact models, namely STRIPES, Kik-Piotrowski and Linder methods are implemented and compared in terms of contact patch prediction, contact pressure and traction distribution. The paper discusses the gaps to be filled in terms of contact model validation and the results indicate the need for better contact pressure and patch estimation in certain contact cases.

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