Broadband locally resonant sonic shields

被引：187

作者：

Ho, KM ^{[1
]}

Cheng, CK ^{[1
]}

Yang, Z ^{[1
]}

Zhang, XX ^{[1
]}

Sheng, P ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 26期

关键词：

D O I：

10.1063/1.1637152

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a class of sonic shield materials based on the principle of locally resonant (LR) microstructures. Each local resonator is found to vibrate almost like an independent unit, and two layers of such resonators can even be regarded as a sonic crystal. By combining several LR layers of different resonant frequencies, a broadband (200-500 Hz) sound shield, with an average transmission intensity 11 dB lower than that dictated by mass density law, has been achieved. (C) 2003 American Institute of Physics.

引用

页码：5566 / 5568

页数：3

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