Operating features of the wheel-rail system during heavy-haul traffic
https://doi.org/10.46973/0201-727X_2026_1_182
Abstract
The wheelset model is adapted to consider a specific point of contact between the wheel and the rail. A conformal wheel profile relative to a new rail is considered. This profile is considered to be the most rational due to its closest approximation to ideal operating conditions. The model simulates free wheel rolling along the rail under a vertical load, i.e., in a straight line. The research methodology is based on numerical modeling using a software package.
The operating features of the wheel-rail system under heavy-haul traffic conditions are investigated: the stress-strain state of the contact zone under excessive loads is assessed. The axle load ranged from 25 to 40 tons per axle. The scientific innovation lies in the use of numerical modeling in the ANSYS environment, taking into account the specific features of surface interaction.
The modeling yielded quantitative data on the distribution of various stress types in the contact zone and determined the geometric dimensions of the contact patch. Sliding zones within the contact area were estimated. The reliability of the results was confirmed by their convergence with theoretical formulas of classical contact mechanics. The obtained patterns allow us to predict the wear and contact fatigue of rails and wheels during heavy-haul traffic.
About the Author
S. V. Krotov
Rostov State Transport University (RSTU)
Russian Federation
Russian Federation
Krotov Sergey Viktorovich, Chair “Construction Mechanics”, Candidate of Engineering Sciences, Associate Professor
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Review
For citations:
Krotov S.V. Operating features of the wheel-rail system during heavy-haul traffic. Vestnik Rostovskogo Gosudarstvennogo Universiteta Putej Soobshcheniya. 2026;(1):182-194. (In Russ.) https://doi.org/10.46973/0201-727X_2026_1_182
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