COMMON WHEEL PROFILE FOR PASSENGER AND FREIGHT CARS TO BE OPERATED BOTH ON THE UKRAINIAN AND ON THE WEST-EUROPEAN RAILWAYS
Keywords:
passenger and freight cars, wheel profiles, dynamic stability, wheel and rail wear.Abstract
One of the most important problems in the current development of the Ukrainian railway transport is to speed up the integration of Ukraine into the European railway service. For cars to operate on the Ukrainian and West-European railways, it is necessary to use gauge-changeable wheelsets, which can automatically change from one gauge to another, and provide wheel-rail contact pair compatibility on the railways of both standards: with R65 rails of cant 1/20 in Ukraine and UIC rails of cant 1/40 in West Europe.
To solve this problem, the Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine developed wheel profiles for passenger and freight cars: ITM-73EP and ITM-73EC, respectively.
The goal of this work was to study the possibility of using one of these profiles as a common wheel profile for passenger and freight cars with prospective trucks to be operated both on the Ukrainian and on the European railways.
The study was concerned with passenger cars with 68-7041 trucks and freight cars with 18-7020 (an axle load of 23.5 tf) and 18-9817 (an axle load of 25 tf) trucks. The use of wheels with both profiles was compared in terms of car dynamic stability at service speeds on tangents of the Ukrainian and European railways and wheel-track interaction indices in curves (with account for different degrees of rail side wear). The results of the calculations made it possible to identify the profile expedient to be used as a common one for passenger and freight cars. According to predictive estimates, the use of wheels with this profile will speed up passing between tracks with different gauges and provide a high ride quality and improved indices of wheel-track interaction on both railways.
REFERENCES
1. Gauge-changeable wheelsets. URL: https://www.railway.supply/uk/rozsuvni-zaliznichni-kolisni-pari/ (Last accessed on October 10, 2025). (in Ukrainian).
2. Ukrainian National Railway Administration together with Spain will make cars automatically adjustable to the track gauge. URL: https://censor.net/n3498056. (In Ukrainian).
3. Domin P. Yu., Domin Yu. V., Cherniak H. Yu., Mostovych A. V. Scientific and Technical Foundations of the Development of "East-West"-Type Railway Vehicles. Kyiv: Volodymyr Dahl East Ukrainian National University, 2024. 380 pp. (in Ukrainian).
4. Pikh B. P., Korzhenevych I. P., Kurgan M. B. Use of railway vehicles with gauge-changeable wheelsets in the Kyiv-Lviv-Mostyska II route. Bulletin of the Dnipropetrovsk National University of Railway Transport. 2004. Iss. 3. Pp. 82-89. (in Ukrainian). https://doi.org/10.15802/stp2004/20907
5. Kurgan N., Voznaia E. Interoperability increase in the Austria - Slovakia - Ukraine - Russia international railway service. Ukrainski Zaliznytsi. 2014. No. 12 (18). Pp. 24-33. (in Russian).
6. Kalivoda, J., Neduzha, L. Running dynamics of rail vehicles. Energies. 2022. V. 15. 5843.
https://doi.org/10.3390/en15165843
7. Mokrii T. F., Malysheva I. Yu., Lapina L. G., Bezrukavyi N. V. Passenger car wheel profile for the operation on the Ukrainian and European railways. Teh. Meh. 2022. No. 4. Pp. 111-120. (In Ukrainian). https://doi.org/10.15407/itm2022.04.111
8. Mokrii T. F., Malysheva I. Yu., Pasichyk S. S. Wheel profile of a freight car with prospective trucks for the combined operation on the Ukrainian and European railways. Teh. Meh. 2023. No. 4. Pp. 90-103. (In Ukrainian). https://doi.org/10.15407/itm2023.04.090
9. Ushkalov V. F., Mokriy T. F., Malysheva I. Yu. Mathematical model of interactions between railway and track considering distributions of contact forces throughout contact spots. Teh. Meh. 2015. No. 2. Pp. 79-89. (in Russian).
10. Model 68-7041 two-axle air-suspension truck. URL: https://www.kvsz.com/index.php/ua/produktsiya/pasazhirske-vagonobuduvannya/khodovi-chastini/item/1932-dvovisnyi-vizok-modeli-68-7041-z-pnevmopidvishuvanniam/ (Last accessed on October 20, 2025). (In Ukrainian).
11. Model 18-7020 type 2 two-axle truck. URL: https://www.kvsz.com/index.php/ua/produktsiya/vantazhne-vagonobuduvannya/vizki-vantazhnogo-vagonobuduvannya/item/1974-vizok-dvovisnyi-model-18-7020-typ-2 (Last accessed on October 11, 2025). (In Ukrainian).
12. 18-9817 TECHPROJECT GROUP two-axle truck, URL: https://tpgroup27.wixsite.com>tp-group (Last accessed on September 1, 2024). (In Ukrainian).
13. Olofsson U., Telliskivi T. Wear, plastic deformation and friction of two rail steels - a full-scale test and a laboratory study. Wear. 2003. No. 254 (1-2). Рp. 80-93. https://doi.org/10.1016/S0043-1648(02)00291-0
14. Podyelnikov I. V. Determination of typical shapes of worn rail heads in curves. Teh. Meh. 2009. No. 3. Pp. 39-43. (in Russian).
15. Ukrainian State Standard GOST 10791:2016 (GOST 10791-2011, IDT). Solid-Rolled Wheels. Specifications. Effective as of September 1, 2016. Kyiv: UkrNDNTs, 2016. 53 pp. (in Ukrainian).
16. Esveld C. Modern Railway Track. Second Edition. MRT-Productions, 2001. 654 pp.
