摘要
通过对轻轨车辆内部的噪声测试实验,分析轻轨车辆内部的声场分布规律、噪声频谱特性和噪声通过分析产生的原因,得出轻轨车辆内部主要噪声源是轮轨噪声,频带主要集中在400～2000 Hz;测量分析两轻轨列车交会时车内噪声的变化。为轻轨列车的降噪治噪提供实验依据。
Through the measurement of internal noise of light-rail vehicles, the distribution rule of the acoustic field inside the vehicles was obtained and the frequency spectrum characteristics of the internal noise were analyzed. Through detailed analysis, it was concluded that the main noise sources inside the light rail vehicles is wheel/rail noise, and the noise frequency is mainly concentrated in 400-2000 Hz range. The noise variation in two light-rail trains when encountering was measured and analyzed. The study provided the experimental base for interior noise control of light-rail vehicles.
出处
《噪声与振动控制》
CSCD
2013年第2期73-76,共4页
Noise and Vibration Control
关键词
声学
轻轨
车内实验
噪声规律
频谱特性
acoustics
light rail vehicles
in-car experiment
noise rule
spectrum characteristics
