Low-frequency total absorption with membrane-type acoustic metamaterial

Guancong Ma; Jun Mei; Min Yang; Zhiyu Yang; Weijia Wen; Ping Sheng

Low-frequency total absorption with membrane-type acoustic metamaterial

Guancong Ma^*
, Jun Mei
, Min Yang
, Zhiyu Yang
, Weijia Wen
, Ping Sheng

^*Corresponding author for this work

Department of Physics

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

2 Citations (Scopus)

Abstract

The absorption of sound has been challenging in the low-frequency regime because of the quadratic relation between dissipation and the rate of change in linear systems. Here, we present a thin-film based acoustic metamaterial that aims to completely absorb low-frequency airborne sound at several resonant frequencies ranging from 100-1000 Hz, at which point the wavelength in air is up to three orders of magnitude large than the sample thickness. It is found that the flapping motion of the asymmetric rigid platelets on the sample leads to large density of elastic bending energy at their perimeter regions. As the flapping motions couple minimally to the far-field radiation, the overall absorption is massively enhanced by the high concentration of elastic energy.

Original language	English
Title of host publication	19th International Congress on Sound and Vibration 2012, ICSV 2012
Publisher	International Institute of Acoustics and Vibrations
Pages	1445-1452
Number of pages	8
Volume	2
ISBN (Print)	9781622764655
Publication status	Published - 8 Jul 2012
Event	19th International Congress on Sound and Vibration 2012, ICSV 2012 - Vilnius, Lithuania Duration: 8 Jul 2012 → 12 Jul 2012

Publication series

Name	International Congress on Sound and Vibration 2012, ICSV

Conference

Conference	19th International Congress on Sound and Vibration 2012, ICSV 2012
Country/Territory	Lithuania
City	Vilnius
Period	8/07/12 → 12/07/12

Cite this

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title = "Low-frequency total absorption with membrane-type acoustic metamaterial",

abstract = "The absorption of sound has been challenging in the low-frequency regime because of the quadratic relation between dissipation and the rate of change in linear systems. Here, we present a thin-film based acoustic metamaterial that aims to completely absorb low-frequency airborne sound at several resonant frequencies ranging from 100-1000 Hz, at which point the wavelength in air is up to three orders of magnitude large than the sample thickness. It is found that the flapping motion of the asymmetric rigid platelets on the sample leads to large density of elastic bending energy at their perimeter regions. As the flapping motions couple minimally to the far-field radiation, the overall absorption is massively enhanced by the high concentration of elastic energy.",

author = "Guancong Ma and Jun Mei and Min Yang and Zhiyu Yang and Weijia Wen and Ping Sheng",

year = "2012",

month = jul,

day = "8",

language = "English",

isbn = "9781622764655",

volume = "2",

series = "International Congress on Sound and Vibration 2012, ICSV",

publisher = "International Institute of Acoustics and Vibrations",

pages = "1445--1452",

booktitle = "19th International Congress on Sound and Vibration 2012, ICSV 2012",

address = "United States",

note = "19th International Congress on Sound and Vibration 2012, ICSV 2012 ; Conference date: 08-07-2012 Through 12-07-2012",

}

Ma, G, Mei, J, Yang, M, Yang, Z, Wen, W & Sheng, P 2012, Low-frequency total absorption with membrane-type acoustic metamaterial. in 19th International Congress on Sound and Vibration 2012, ICSV 2012. vol. 2, International Congress on Sound and Vibration 2012, ICSV, International Institute of Acoustics and Vibrations, pp. 1445-1452, 19th International Congress on Sound and Vibration 2012, ICSV 2012, Vilnius, Lithuania, 8/07/12.

Low-frequency total absorption with membrane-type acoustic metamaterial. / Ma, Guancong; Mei, Jun; Yang, Min et al.
19th International Congress on Sound and Vibration 2012, ICSV 2012. Vol. 2 International Institute of Acoustics and Vibrations, 2012. p. 1445-1452 (International Congress on Sound and Vibration 2012, ICSV).

Research output: Chapter in book/report/conference proceeding › Conference proceeding › peer-review

TY - GEN

T1 - Low-frequency total absorption with membrane-type acoustic metamaterial

AU - Ma, Guancong

AU - Mei, Jun

AU - Yang, Min

AU - Yang, Zhiyu

AU - Wen, Weijia

AU - Sheng, Ping

PY - 2012/7/8

Y1 - 2012/7/8

N2 - The absorption of sound has been challenging in the low-frequency regime because of the quadratic relation between dissipation and the rate of change in linear systems. Here, we present a thin-film based acoustic metamaterial that aims to completely absorb low-frequency airborne sound at several resonant frequencies ranging from 100-1000 Hz, at which point the wavelength in air is up to three orders of magnitude large than the sample thickness. It is found that the flapping motion of the asymmetric rigid platelets on the sample leads to large density of elastic bending energy at their perimeter regions. As the flapping motions couple minimally to the far-field radiation, the overall absorption is massively enhanced by the high concentration of elastic energy.

AB - The absorption of sound has been challenging in the low-frequency regime because of the quadratic relation between dissipation and the rate of change in linear systems. Here, we present a thin-film based acoustic metamaterial that aims to completely absorb low-frequency airborne sound at several resonant frequencies ranging from 100-1000 Hz, at which point the wavelength in air is up to three orders of magnitude large than the sample thickness. It is found that the flapping motion of the asymmetric rigid platelets on the sample leads to large density of elastic bending energy at their perimeter regions. As the flapping motions couple minimally to the far-field radiation, the overall absorption is massively enhanced by the high concentration of elastic energy.

UR - https://www.proceedings.com/16317.html

UR - https://www.scopus.com/pages/publications/84876224702

M3 - Conference proceeding

AN - SCOPUS:84876224702

SN - 9781622764655

VL - 2

T3 - International Congress on Sound and Vibration 2012, ICSV

SP - 1445

EP - 1452

BT - 19th International Congress on Sound and Vibration 2012, ICSV 2012

PB - International Institute of Acoustics and Vibrations

T2 - 19th International Congress on Sound and Vibration 2012, ICSV 2012

Y2 - 8 July 2012 through 12 July 2012

ER -

Low-frequency total absorption with membrane-type acoustic metamaterial

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