地铁轮轨噪声的统计能量分析  

Statistical Energy Analysis of Wheel and Rail Noise of Subway

作　　者：罗斌[1] 肖友刚[2] 

机构地区：[1]中南大学机电工程学院,湖南长沙410075 [2]中南大学交通运输工程学院,湖南长沙410075

出　　处：《铁道机车车辆》2009年第5期60-63,共4页Railway Locomotive & Car

摘　　要：采用统计能量分析法,建立了地铁轮轨噪声预测模型,预测了某地铁的轮轨噪声,得出了如下结论：当地铁以60 km/h的速度运行时,轮轨总辐射噪声主要分布在中心频率为500~4000 Hz的一个较宽的频率范围内,其中钢轨辐射噪声主要分布在中心频率为500~4000 Hz的较宽频率范围内;车轮辐射噪声主要分布在中心频率为1250~4000 Hz的中、高频范围内。从二者对总噪声的贡献来看,钢轨是主要的辐射源,车轮次之。轮轨、钢轨、车轮的辐射总声压级分别为86、85、81 dBA。With statistical energy analysis, the forecast model of wheel - rail noise of subway was established, wheel - rail noise of certain subway was predicted. It shows when the train rims with the speed of 60 kin/h, the major noise radiated from wheel - rail is in the range of 500 - 4 000 Hz; The ma- jor noise radiated from rail is in the range of 500 - 4 000 Hz; The major noise radiated from wheel is in the range of 1 250 - 4 000 Hz . As for the contri- bution to total noise, rail is dominate, wheel is minor.The sound pressure level （SPL） radiated from rail- wheel, rail, wheel, is 86 dBA, 85 dBA, 81 dBA, separately.

关 键 词：地铁 轮轨噪声 统计能量分析 

分 类 号：U271.16[机械工程—车辆工程]