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Tunable auxetic metamaterials for simultaneous attenuation of airborne sound and elastic vibrations in all directions

Kheybari, Majid and Daraio, Chiara and Bilal, Osama R. (2022) Tunable auxetic metamaterials for simultaneous attenuation of airborne sound and elastic vibrations in all directions. Applied Physics Letters, 121 (8). Art. No. 081702. ISSN 0003-6951. doi:10.1063/5.0104266.

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Through a combination of analytical, numerical, and experimental methods, we study a three-dimensional metamaterial with the ability to attenuate both airborne sound and mechanical vibrations, simultaneously, and in all directions. In addition, due to the auxetic nature of the design (i.e., having a negative Poisson's ratio), the metamaterial can shrink (or expand) in a relatively uniform manner, without buckling. We utilize an external load to cause a systematic shape change in the metamaterial and tune the attenuation frequency bands. The presented design principles can be utilized in many applications related to acoustic and elastic wave manipulation as well as acoustic devices.

Item Type:Article
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URLURL TypeDescription
Kheybari, Majid0000-0002-4507-819X
Daraio, Chiara0000-0001-5296-4440
Bilal, Osama R.0000-0003-3803-5084
Additional Information:The authors are grateful for the contributions of L. Ulrich to this project through his M.Sc. thesis work. M.K. and O.R.B. acknowledge support from UConn start-up package (O.R.B.) and C.D. acknowledges support from the US National Science Foundation, Grant No. EFRI-1741565.
Funding AgencyGrant Number
University of ConnecticutUNSPECIFIED
Issue or Number:8
Record Number:CaltechAUTHORS:20221010-454096500.20
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:117304
Deposited By: Research Services Depository
Deposited On:14 Oct 2022 17:49
Last Modified:14 Oct 2022 17:49

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