噪声与振动控制Issue(3)：181-185,5.DOI:10.3969/j.issn.1006-1335.2015.03.039
基于谱元法的加筋双层板声透射分析
Sound Transmission Analysis of Sandwich Plates Based on Spectral Element Method
摘要
Abstract
A theoretical study on the vibration response of sandwich plates with typical corrugated cores under incident plane sound wave excitation was done by using spectral element method (SEM). Accuracy and efficiency of the SEM were validated by comparing the results with those of FEM. The transmission sound power through the sandwich plates under the normal incidence of the plane sound wave was calculated by applying Rayleigh integral. The effects of the distance between the two faceplates and the inclination angle of the stiffening core on the transmission acoustic power were studied under the condition of constant cross sectional area of the whole structure. It is shown that the transmission sound power of the reinforced sandwich plate decreases as the inclination angle of the corrugated core increases. When the inclination angle of the core is less than 22 o, the transmission sound power reduces with the decrease of the distance between the two faceplates. These results are meaningful to the structural design and vibro-acoustic optimization of sandwich plates with corrugated cores.关键词
声学/加筋双层板/声透射/谱元法/振动-声学响应/辐射声功率Key words
acoustics/sandwich plates/sound transmission/spectral element method/vibro-acoustic performance/acoustic radiation power分类
通用工业技术引用本文复制引用
李兰清,郑辉..基于谱元法的加筋双层板声透射分析[J].噪声与振动控制,2015,(3):181-185,5.基金项目
国家自然科学基金面上项目 （）
