噪声与振动控制2018，Vol.38Issue(z1)：215-218,4.DOI:10.3969/j.issn.1006-1355.2018.Z1.045
一种同时具有声波调向和衰减功能的声学超表面
An Acoustic Metasurface with Simultaneous Acoustic Modulation and Attenuation
摘要
Abstract
A rigid structure was introduced into the acoustic metasurface of layered medium with acoustic modulation function. Employing the theory of equivalent medium and replacing different media by curly labyrinth, an acoustic metasurface was designed to achieve simultaneous acoustic modulation and attenuation in the air. The adjustable range was from 30°to 50°, and the sound attenuation was above 40%. The theories of layered medium and equivalent medium were combined to design an arbitrary underwater acoustic metasurface structure based on a curly labyrinth. Theoretical calculation and simulation analysis were done to verify the effect of this structure. This study can be used to design rigid underwater acoustic metasurfaces with low frequency, adjustable direction and sound attenuation.关键词
声学/声波调向/分层介质/等效介质/卷曲迷宫/声衰减Key words
acoustics/direction modulation of acoustic wave/layered medium/equivalent medium/curly labyrinth/sound attenuation分类
数理科学引用本文复制引用
程宝柱,高南沙,侯宏,赵江坤..一种同时具有声波调向和衰减功能的声学超表面[J].噪声与振动控制,2018,38(z1):215-218,4.基金项目
国家自然科学基金青年资助项目(11703314) （11703314）
