Author(s)

Qi Wang, JiMin Zhang^*, Kun He

Affiliation(s)

School of Transportation, Tongji University, Shanghai 201804, China.

Corresponding Author

JiMin Zhang

ABSTRACT

Gearbox housing vibration critically impacts the operational safety and reliability of high-speed trains. However, existing research mainly relies on the track spectrum of Wuhan-Guangzhou Line, lacking analysis tailored to the unique characteristics and curve negotiation conditions of Beijing-Shanghai Line. To address this gap, this study establishes an experimentally validated vehicle-track coupled dynamics model, conducting multi-condition simulations to explore gearbox vibration correlations with operating parameters, track conditions, and wheel polygon excitation under Beijing-Shanghai Line scenarios. Key findings show that as speed increases, vertical (Z) and lateral (Y) vibration responses of three measurement points converge. Low speeds are dominated by 11th-order wheel polygon effects, while high speeds are influenced more by the 23rd-order polygon. Upper gearbox points exhibit prominent Y-direction vibration, and lower points show significant Z-direction vibration. Beyond 300 km/h, speed becomes the dominant factor, with polygon order’s influence on vibration acceleration RMS values diminishing. Gearbox vibration intensifies at 275 km/h under 23rd-order polygon excitation, and vibration severity increases with wheel polygon amplitude. Curve negotiation analysis reveals that smaller radii induce more severe vibration: Z-direction vibration decreases monotonically with increasing radius. Y-direction vibration behaves differently by speed—increasing with radius at 250 km/h but decreasing at other speeds. Local peaks occur at 9,000 m radius (275/325 km/h) and 8,000 m radius (350 km/h) due to enhanced wheel-rail excitation.

KEYWORDS

Gearbox housing vibration; Beijing-Shanghai Line; Wheel polygon; Curve radius

CITE THIS PAPER

Qi Wang, JiMin Zhang, Kun He. Dynamic characteristics of gearbox housing vibration on the Beijing-Shanghai line. World Journal of Engineering Research. 2025, 3(6): 7-15. DOI: https://doi.org/10.61784/wjer3065.

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