Locally resonant sonic materials

Ping Sheng; X. X. Zhang; Z. Liu; C. T. Chan

doi:10.1016/S0921-4526(03)00487-3

Locally resonant sonic materials

Ping Sheng^*, X. X. Zhang, Z. Liu, C. T. Chan

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

299 Scopus citations

Abstract

We have fabricated a new type of composite which displays localized sonic resonances at ∼ 350-2000 Hz with a microstructure size in the millimeter to centimeter range. Around the resonance frequencies the composite behaves as a material with effective negative elastic constants and as a total wave reflector - a 2 cm slab of this material is shown to break the conventional mass-law of sound transmission by order(s) of magnitude. When the microstructure is periodic, our composites exhibit large elastic wave band gaps at the sonic frequency range, with a lattice constant order(s) of magnitude smaller than the corresponding sonic wavelength in air. Good agreement is obtained between theory and experiment.

Original language	English (US)
Pages (from-to)	201-205
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	338
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4526(03)00487-3
State	Published - Oct 1 2003
Externally published	Yes
Event	Proceedings of the Sixth International Conference on Electrica (ETOPIM 6) - Snowbird, UT, United States Duration: Jul 15 2002 → Jul 19 2002

Keywords

Elastic wave band gaps
Localized resonance
Negative elastic constants

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(03)00487-3

Cite this

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title = "Locally resonant sonic materials",

abstract = "We have fabricated a new type of composite which displays localized sonic resonances at ∼ 350-2000 Hz with a microstructure size in the millimeter to centimeter range. Around the resonance frequencies the composite behaves as a material with effective negative elastic constants and as a total wave reflector - a 2 cm slab of this material is shown to break the conventional mass-law of sound transmission by order(s) of magnitude. When the microstructure is periodic, our composites exhibit large elastic wave band gaps at the sonic frequency range, with a lattice constant order(s) of magnitude smaller than the corresponding sonic wavelength in air. Good agreement is obtained between theory and experiment.",

keywords = "Elastic wave band gaps, Localized resonance, Negative elastic constants",

author = "Ping Sheng and Zhang, {X. X.} and Z. Liu and Chan, {C. T.}",

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doi = "10.1016/S0921-4526(03)00487-3",

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note = "Proceedings of the Sixth International Conference on Electrica (ETOPIM 6) ; Conference date: 15-07-2002 Through 19-07-2002",

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TY - JOUR

T1 - Locally resonant sonic materials

AU - Sheng, Ping

AU - Zhang, X. X.

AU - Liu, Z.

AU - Chan, C. T.

PY - 2003/10/1

Y1 - 2003/10/1

N2 - We have fabricated a new type of composite which displays localized sonic resonances at ∼ 350-2000 Hz with a microstructure size in the millimeter to centimeter range. Around the resonance frequencies the composite behaves as a material with effective negative elastic constants and as a total wave reflector - a 2 cm slab of this material is shown to break the conventional mass-law of sound transmission by order(s) of magnitude. When the microstructure is periodic, our composites exhibit large elastic wave band gaps at the sonic frequency range, with a lattice constant order(s) of magnitude smaller than the corresponding sonic wavelength in air. Good agreement is obtained between theory and experiment.

AB - We have fabricated a new type of composite which displays localized sonic resonances at ∼ 350-2000 Hz with a microstructure size in the millimeter to centimeter range. Around the resonance frequencies the composite behaves as a material with effective negative elastic constants and as a total wave reflector - a 2 cm slab of this material is shown to break the conventional mass-law of sound transmission by order(s) of magnitude. When the microstructure is periodic, our composites exhibit large elastic wave band gaps at the sonic frequency range, with a lattice constant order(s) of magnitude smaller than the corresponding sonic wavelength in air. Good agreement is obtained between theory and experiment.

KW - Elastic wave band gaps

KW - Localized resonance

KW - Negative elastic constants

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U2 - 10.1016/S0921-4526(03)00487-3

DO - 10.1016/S0921-4526(03)00487-3

M3 - Conference article

AN - SCOPUS:0242492823

SN - 0921-4526

VL - 338

SP - 201

EP - 205

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

IS - 1-4

T2 - Proceedings of the Sixth International Conference on Electrica (ETOPIM 6)

Y2 - 15 July 2002 through 19 July 2002

ER -

Locally resonant sonic materials

Abstract

Keywords

ASJC Scopus subject areas

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