Study on broadband low-frequency sound insulation of multi-channel resonator acoustic metamaterials

被引：12

作者：

Xu, Chi ^{[1
]}

Guo, Hui ^{[2
]}

Chen, Yinghang ^{[1
]}

Dong, Xiaori ^{[1
]}

Ye, Hongling ^{[1
]}

Wang, Yansong ^{[2
]}

机构：

[1] Bengbu Univ, Sch Mech & Automot Engn, 1866 Caoshan Rd, Longzihu Dist 233000, Bengbu, Peoples R China

[2] Shanghai Univ Engn Sci, Sch Mech & Automot Engn, 333 Longteng Rd, Shanghai 201620, Peoples R China

来源：

AIP ADVANCES | 2021年 / 11卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Sound insulation - Energy gap - Metamaterials;

D O I：

10.1063/5.0047416

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel acoustic metamaterial structure, made up of both resonator and multiple channels, is proposed to insulate low-frequency broadband noises. Three bandgaps with a total width of 658 Hz can be obtained below 900 Hz when the structure appears as a single negative characteristic within specific frequency ranges. These bandgaps are caused by the standing-wave characteristics under the coupling action of the interior and exterior cavities and the multiple channels. By changing structural parameters and materials, the low-frequency broadband sound insulation performance of the structure can be improved. Experimental results further prove the sound insulation characteristics. The results obtained herein can be used as a guide toward achieving low-frequency broadband sound insulation using a lightweight structure.

引用

页数：11