A型地铁车辆孔隙结构对整车隔声性能影响的计算分析  

Calculation analysis of the influence of hole and gap structures on sound transmission loss of type A metro vehicles

作　　者：唐勇军[1] 郭海洋[1] 

机构地区：[1]南车株洲电力机车有限公司,湖南株洲412001

出　　处：《电力机车与城轨车辆》2010年第4期29-30,35,共3页Electric Locomotives & Mass Transit Vehicles

摘　　要：通过理论计算和实验方法,研究了地铁车辆中孔隙结构的透声面积和隔声量对整车隔声性能的影响。结果表明,减小孔隙结构的透声面积或增加其隔声量都可以提高整车的隔声性能。The influence of hole and gap structures on sound transmission loss of metro vehicle is investigated theoretically and experimentally.It is shown that transmission loss of metro vehicle can be improved by decreasing the surface area or increasing the transmission loss of hole and gap structures.

关 键 词：地铁车辆 隔声量 噪声 

分 类 号：U270.2[机械工程—车辆工程]