Acoustic metamaterials with coupled local resonators for broadband vibration suppression

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dc.contributor.author Hu, Guobiao en
dc.contributor.author Tang, Lihua en
dc.contributor.author Das, Rajarshi en
dc.contributor.author Gao, S en
dc.contributor.author Liu, H en
dc.date.accessioned 2018-09-20T04:27:27Z en
dc.date.issued 2017-02-01 en
dc.identifier.citation AIP Advances, 7(2), 15 pages. doi:10.1063/1.4977559 en
dc.identifier.uri http://hdl.handle.net/2292/37718 en
dc.description.abstract This paper investigates a modified acoustic metamaterial system with local resonators coupled through linear springs. The proposed acoustic metamaterial system can provide three band gaps for broadband vibration suppression. First, the band structure of the modified acoustic metamaterial is calculated by using Bloch’s theorem under the assumption of infinite lattice. The existence of three band gaps is confirmed in the band structure. Effects of mass and spring parameters on the band gap behaviour of the modified metamaterial are investigated through a dimensionless parametric study. Based on the parametric study, optimal dimensionless parameters are proposed to achieve maximal total band gap width in the low frequency range. Subsequently, a more realistic finite lattice model is established. The transmittances of the conventional and modified metamaterial systems are compared. The three band gaps predicted from transmittances and broadband vibration suppression behaviour are consistent with the predictions from infinite lattice model using Bloch’s theorem. Finally, the time-domain responses are simulated and the superiority of the modified acoustic metamaterial over the conventional one is demonstrated. en
dc.publisher American Institute of Physics en
dc.relation.ispartofseries AIP Advances en
dc.rights Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. en
dc.rights.uri https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm en
dc.rights.uri https://creativecommons.org/licenses/by/4.0/ en
dc.title Acoustic metamaterials with coupled local resonators for broadband vibration suppression en
dc.type Journal Article en
dc.identifier.doi 10.1063/1.4977559 en
pubs.issue 2 en
pubs.begin-page 025211 en
pubs.volume 7 en
dc.rights.holder Copyright: The authors en
pubs.author-url http://aip.scitation.org/doi/10.1063/1.4977559 en
pubs.end-page 025211 en
dc.rights.accessrights http://purl.org/eprint/accessRights/OpenAccess en
pubs.subtype Article en
pubs.elements-id 614944 en
pubs.org-id Engineering en
pubs.org-id Mechanical Engineering en
dc.identifier.eissn 2158-3226 en
pubs.number 025211 en
pubs.record-created-at-source-date 2017-02-25 en


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