噪声与振动控制2016，Vol.36Issue(4)：27-31,5.DOI:10.3969/j.issn.1006-1335.2016.04.006
多层材料椭球形空腔吸声覆盖层的吸声特性分析
Analysis of the Absorption Characteristics of a Multi-layered Ellipsoid Cavity Anechoic Coating
摘要
Abstract
Since the poor absorption property of an ellipsoid cavity absorption coating in low frequency range, the Comsol finite element model of a multi-layered ellipsoid cavity absorption coating is built. The finite element model is verified by the transfer matrix method and its absorption characteristics are simulated. It is indicated that the curves of the theoretical calculation results from the transfer matrix method and the numerical simulation results are roughly in agreement, so the finite element model is validated. The finite element analysis shows that the absorption characteristics of the multi-layer material structure are superior to the monolayer material structure in the same perforation rate. Besides, influences of perforation rate, coating thickness, loss factors and Young’s modulus on the absorption coefficients of the structure are analyzed. This work provides a reference for further acoustic optimization of the structure.关键词
声学/Comsol/多层材料/传递矩阵/吸声系数Key words
acoustics/Comsol/multi-layered material/transfer matrix/sound absorption coefficient分类
数理科学引用本文复制引用
刘国强,楼京俊,何其伟..多层材料椭球形空腔吸声覆盖层的吸声特性分析[J].噪声与振动控制,2016,36(4):27-31,5.基金项目
国家自然科学基金资助项目（51179197）；国家自然科学基金青年基金资助项目 （）
