An open-structure sound insulator against low-frequency and wide-band acoustic waves

被引：18

作者：

Chen, Zhe ^{[1
]}

Fan, Li ^{[1
]}

Zhang, Shu-yi ^{[1
]}

Zhang, Hui ^{[1
]}

Li, Xiao-juan ^{[1
]}

Ding, Jin ^{[1
]}

机构：

[1] Nanjing Univ, Inst Acoust, Lab Modern Acoust, Nanjing 210093, Jiangsu, Peoples R China

来源：

APPLIED PHYSICS EXPRESS | 2015年 / 8卷 / 10期

基金：

中国国家自然科学基金;

关键词：

METAMATERIALS; ATTENUATION; MODULUS;

D O I：

10.7567/APEX.8.107301

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To block sound, i.e., the vibration of air, most insulators are based on sealed structures and prevent the flow of the air. In this research, an acoustic metamaterial adopting side structures, loops, and labyrinths, arranged along a main tube, is presented. By combining the accurately designed side structures, an extremely wide forbidden band with a low cut-off frequency of 80 Hz is produced, which demonstrates a powerful low-frequency and wide-band sound insulation ability. Moreover, by virtue of the bypass arrangement, the metamaterial is based on an open structure, and thus air flow is allowed while acoustic waves can be insulated. (C) 2015 The Japan Society of Applied Physics

引用

页数：4

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