Influence of the instability form on the traffic safety of freight rolling stock
Keywords:
Traffic safety, Railway, Wagon lift stability, Compressed-bent rod, Instability formAbstract
The purpose of the paper is a theoretical study of the influence of longitudinal forces of a quasi-static nature and the instability form of freight wagons in a train on the wheel derailment stability. Knowledge of the laws of train movement under various control modes is necessary when programming the equations of train movement when it is necessary to determine the exact position of the train on the railway track and the stability of the wagons at the time of interest. As a result of theoretical studies, the values of the factor of stability against lift by longitudinal forces were obtained, taking into account the forms of instability. The relevance of this study relates to the need to control the longitudinal forces arising during the train movement, taking into account the increase in speeds, masses, and lengths of trains (especially freight trains) and the locomotive power increase.
References
Cheli, F., Di Gialleonardo, E., & Melzi, S. (2017). Freight trains dynamics: effect of payload and braking power distribution on coupling forces. Vehicle system dynamics, 55(4), 464-479. https://doi.org/10.1080/00423114.2016.1246743.
Crăciun, C., & Cruceanu, C. (2018). Influence of resistance to motion of railway vehicles on the longitudinal trains dynamics. In MATEC Web of Conferences (Vol. 178, p. 06003). EDP Sciences. https://doi.org/10.1051/matecconf/201817806003.
Zhang, H., Zhang, C., Lin, F., Wang, X., & Fu, G. (2021). Research on Simulation Calculation of the Safety of Tight-Lock Coupler Curve Coupling. Symmetry, 13(11), 1997. https://doi.org/10.3390/sym13111997.
Shvets, A. (2022). Stability of a car as a hinged-rod system under the action of compressive longitudinal forces in a train. Journal of Modern Technology and Engineering, 7(2), 96-123.
Shvets, A. O. (2022). Determination of the form of loss the freight cars stability taking into account the gap in the rail track. Strength of Materials and Theory of Structures, 109, 485-500. https://doi.org/10.32347/2410-2547.2022.109.485-500.
Shvets’, A. O. (2022). Investigation of coupling strength at non-central interaction of railcars. Strength Mater, 54(2), 233–242. https://doi.org/10.1007/s11223-022-00396-1.
Shvets, A. O. (2020). Stability of freight wagons under the action of compressing longitudinal forces. Science and Transport Progress, 1(85), 119-137. https://doi.org/10.15802/stp2020/199485.
Shvets, A. O., Shatunov, O. V., Dovhaniuk, S. S., Muradian, L. A., Pularyia, A. L., & Kalashnik, V. O. (2020). Coefficient of stability against lift by longitudinal forces of freight cars in trains. IOP Conference Series: Materials Science and Engineering, 985, Paper 012025. https://doi.org/0.1088/1757-899X/985/1/012025.
