An acoustic double fishnet using Helmholtz resonators

被引：13
|
作者：
Murray, A. R. J. [1 ]
Summers, I. R. [1 ]
Sambles, J. R. [1 ]
Hibbins, A. P. [1 ]
机构：
[1] Univ Exeter, Dept Phys & Astron, Exeter EX4 4QL, Devon, England
来源：
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA | 2014年 / 136卷 / 03期
基金：
英国工程与自然科学研究理事会;
关键词：
ARRAYS; BAND; METAMATERIAL; ABSORPTION; INCLUSIONS; CRYSTALS; SOUND;
D O I：
10.1121/1.4892859
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
The acoustic transmission of a closely spaced pair of patterned and perforated rigid plates is explored in air. The structure resembles an acoustic double fishnet design, with each plate modified such that the gap between them acts as an array of Helmholtz resonators. This allows the center frequency of the stop band to be reduced by a factor greater than 2 from the value obtained for the conventional acoustic double fishnet design. Experimental results accord well with the predictions of a finite element model. (C) 2014 Acoustical Society of America.
引用
收藏
页码：980 / 984
页数：5
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