Broadband Noise Control in Ducts via Electro-Mechanical Coupling

被引：4
|
作者：
Wang, Chunqi [1 ,2 ,3 ]
Zhang, Yumin [1 ,2 ,3 ]
Huang, Lixi [1 ,2 ,3 ]
机构：
[1] Zhejiang Inst Res & Innovat HKU, Lab Aerodynam & Acoust, Linan, Peoples R China
[2] Shenzhen Inst Res & Innovat HKU, Shenzhen, Peoples R China
[3] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
来源：
FLUID-STRUCTURE-SOUND INTERACTIONS AND CONTROL | 2016年
关键词：
Duct noise control; Low frequency noise; Sound reflection; mart plate silencer; Electro-mechanical coupling; PLATE SILENCER;
D O I：
10.1007/978-3-662-48868-3_16
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Previous studies have shown that a light but stiff plate covering a side-branch rigid cavity may work effectively as a duct noise control device over a wide range of low to medium frequencies. In this study, a passive shunt circuit is introduced to the plate to further enhance the noise reduction performance, which leads to a 'smart plate silencer'. Owing to the electro-mechanical coupling between the electric circuit and the piezo-electro materials, the structural properties of the smart plate vary greatly with frequency. Results show that breakthrough enhancement of the noise control device may be achieved with a proper choice of the shunt circuit.
引用
收藏
页码：101 / 106
页数：6
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