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近几年来,随着铁道车辆的大型化和高速化,人们渐渐关注起车辆噪音问题,并一直研究对它的防止措施。噪音发生的根源虽可举出种种,但其中一个主要根源是轮轨间的噪音。轮轨间发生的噪音,大致可分为三类:①滚动噪音——车轮在钢轨上滚动时发出的声音;②冲击噪音——车轮通过钢轨接缝时发出的声音;③摩擦噪音——在曲线等区段,轮缘碰到钢轨侧面以及踏面滑移时发出的声音。为了防止轮轨间的噪音,需要对钢轨和车轮分别进行改进。对于车轮,一般是使发
In recent years, as railroad vehicles have become larger and more speedy, people are paying more attention to noise from vehicles and have been studying how to prevent them. Although the root causes of noise may be cited, one of the main causes is the noise between the wheel and rail. Noise occurring between the wheel and rail can be divided into three categories: ① rolling noise - the sound of the wheel rolling on the rail; ② impact noise - the sound of the wheel when passing through the seam of the rail; ③ friction noise - Curves and other sectors, the rim hit the rail side and the sound of the tread slippage. In order to prevent the noise between the wheel and rail, the rail and the wheel need to be improved respectively. For the wheel, the hair is usually made