Simulation Analysis of Axle Load Transfer During Actual Traction and Braking

Ting Tang; Xiaoyang Liu; Shuangxi Chen

doi:10.6919/ICJE.202606_12(6).0010

Authors

Ting Tang
Xiaoyang Liu
Shuangxi Chen

DOI:

https://doi.org/10.6919/ICJE.202606_12(6).0010

Keywords:

Road–rail Vehicle; Actual Traction Braking; Axle Load Transfer; Coupler Buffer Device.

Abstract

Driven by the Belt and Road Initiative, the demand for efficient transport has promoted the development of multimodal transport, particularly road-rail intermodal transport, to overcome the drawbacks of traditional railway freight. This paper investigates the axle load transfer problem of a specific type of road-rail combined vehicle during operation. Unlike existing studies that mostly employ idealized or simplified traction/braking conditions, this study innovatively introduces real traction and braking curves into the dynamic model, thereby accurately reproducing the actual operating conditions of the train. Through simulating various empty and loaded vehicle marshalling conditions, the axle load transfer characteristics under different train formations are systematically analyzed. On the basis of exploring the fundamental mechanisms inducing axle load transfer, three targeted improvement schemes are put forward. Numerical simulations are carried out for these schemes and compared with the original design, so as to obtain the quantitative values and variation laws of axle load transfer under different conditions. The findings can provide important theoretical data and engineering references for the structural design, performance optimization and manufacturing of road-rail combined vehicles.

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