双层板声透射性能计算分析

PERFORMANCE CALCULATON AND ANALYSIS OF SOUND TRANSMISSION FOR DOUBLE PANEL STRUCTURE

随着双层板结构在工程中的广泛应用 ,其声透射性能也得到越来越多的关注。本文从声波动方程和尤拉方程入手 ,利用边界条件得出双层板透声系数表达式 ,并利用所得表达式对双层板结构在不同板距和不同入射角的情况下的声透射性能做了比较 。

With the increasing application of double panel structure in engineering,people pay more and more attention to its sound transmission performance.In the paper,acoustic wave equation and Euler's equation are used to deduce the expression of the double panel structure's acoustic transmittivity under certain boundary conditions.And the expression can be used to compare the performance of double panel structures with different angles of arrival and different distances between plates.All of these are of practical value for sound transmission and noise insulation design of double panel structure.