摘要
随着高速列车运行速度的提升,高速列车内部噪声过高的问题日益突出,识别高速列车在高速运行时主要噪声来源对减振降噪非常重要。本文针对我国高速列车CRH380B型车,在多工况的实车运行状态下进行噪声振动测试研究,并利用速度指数拟合进行计算。得到了我国CRH380B型高速列车不同的噪声随速度指数变化的规律和车内车外的过渡速度区。该结果能够对高速列车噪声来源识别提供参考,为高速列车的车厢内部低噪声设计提供依据。
With the running speed of China railway high-speed, internal noise become increasingly prominent. Identification of the main source of noise is very important for reducing vibration and noise. This paper focuses on research of noise and vibration testing on the vehicle running state multi condition, the relation of speed and noise is calculated by using exponential fitting. The inner and outer transition speed and vehicle noise with the index of speed of CRH380B can be calculated. The results can provide reference for the high speed train noise source identification and the basis for the design of low noise internal high-speed train carriage.
出处
《应用声学》
CSCD
北大核心
2014年第2期184-188,共5页
Journal of Applied Acoustics
关键词
高速列车
噪声
速度指数
China railways high-speed, Noise, Speed index
