Modelling Wheel/Rail Rolling Noise for a High-Speed Train Running on a Slab Track

摘要

About 35,000 km of high-speed railways are in operation in China with a maximum operational speed of 350 km/h. The main track form on the high-speed lines is non-ballasted slab track. Measured data show that at high speeds, rolling noise is still a dominant source for both interior and exterior noise. Although rolling noise modelling has been conducted for more than 30 years, a train running at 350 km/h or higher along a non-ballasted slab track brings many new factors which have not been adequately addressed in the past. The aim of this paper is to describe a new approach that brings together elements that have been developed by the authors to model rolling noise from a high-speed train running on a slab track, and to present some results for a typical high-speed train and track, including rolling noise frequency spectrum, dependence on train speed, and contributions of the wheel, rail and slab.