Vibration, Volume 9, Issue 2
2026 June - 20 articles
Cover Story: Lateral hollow wear generally forms on wheel treads of 400 km/h high-speed trains, but its noise generation mechanism lacks systematic analysis. This study combines field measurements and 3D explicit finite element simulations to investigate wheel–rail contact and acoustic performance. Measured worn wheel profiles are used to build numerical models for contact patch and dynamic force calculation. Results reveal that deeper hollow wear stretches contact patches and shifts contact centers toward wheel flanges, boosting structural receptance. A 0.78 mm wear depth increment increases wheel noise by 2.3 dB, rail noise by 0.9 dB, and overall noise by 1.0 dB. The findings clarify the coupling between tread hollow wear and high-frequency wheel–rail noise, supporting wheel maintenance and noise reduction for high-speed railways. View this paper
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Vibration - ISSN 2571-631X