Tunable acoustic waveguide based on vibro-acoustic metamaterials with shunted piezoelectric unit cells

被引：15

作者：

Kwon, Byung-Jin ^{[1
,2
,4
]}

Jung, Jin-Young ^{[1
,2
]}

Lee, Dooho ^{[1
,2
]}

Park, Kwang-Chun ^{[1
,2
,3
]}

Oh, Il-Kwon

机构：

[1] Korea Adv Inst Sci & Technol, Dept Mech Engn, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Grad Sch Ocean Syst Engn, Taejon 305701, South Korea

[3] Univ Colorado, Dept Aerosp Engn Sci, Boulder, CO 80309 USA

[4] Agcy Def Dev, Chang Won 645600, Gyeongnam, South Korea

来源：

SMART MATERIALS AND STRUCTURES | 2015年 / 24卷 / 10期

基金：

新加坡国家研究基金会;

关键词：

piezoelectric; wave control; acoustic metamaterials; COMPLIANT OPTICAL METAMATERIALS; MODULUS; CLOAKING;

D O I：

10.1088/0964-1726/24/10/105018

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We propose a new class of acoustic waveguides with tunable bandgaps (TBs) by using vibro-acoustic metamaterials with shunted periodic piezoelectric unit cells. The unit metamaterial cells that consist of a single crystal piezoelectric transducer and an electrical shunt circuit are designed to induce a strong vibro-acousto-electrical coupling, resulting in a tunable acoustic bandgap as well as local structural resonance and Bragg scattering bandgaps. The present results show that the TB frequency can be actively controlled and the transmission loss of the acoustic wave can be greatly improved by simply changing the inductance values in the shunt circuit.

引用

页数：8

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