This study investigates the effect of cross braces on the lateral stability and curve passability of heavy haul freight wagons. A vehicle kinetic model of a heavy haul freight wagon was established based on the vehicle–track coupling kinetic theory. The dynamic performance of empty and heavy freight wagons in a straight line section and a curve section with or without cross braces was simulated and analysed. The running stability, acceleration, safety, and wear indexes were analysed. The results demonstrate that the utilisation of cross braces has a considerable impact on enhancing the bogie’s stability and the vehicle’s critical speed. With cross braces, the vehicle can meet operational requirements at speeds of up to 120 km/h, compared to 70 km/h without them. Nonetheless, it is recommended to install cross braces to minimize wear and tear. The general trend in straight and curved section operation is that the presence or absence of cross braces has a minimal effect on acceleration and stability. Without cross braces, the wheelset lateral force increases, the attack angle of the wheelset decreases, and the wear index increases. Conversely, the use of cross braces can reduce wheel wear.
Analysis of the Effect of Cross Braces on the Dynamics of Heavy Haul Freight Wagons
Third International Conference on Rail Transportation ; 2024 ; Shanghai, China
ICRT 2024 ; 117-127
18.03.2025
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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