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dc.contributor.authorSal Anglada, Gaston
dc.contributor.authorYago Llamas, Daniel
dc.contributor.authorCante Terán, Juan Carlos
dc.contributor.authorOliver Olivella, Xavier
dc.contributor.authorRoca Cazorla, David
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Enginyeria Mecànica, Fluids i Aeronàutica
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2024-04-15T12:42:51Z
dc.date.available2024-04-15T12:42:51Z
dc.date.issued2024-03-15
dc.identifier.citationSal Anglada, G. [et al.]. Sound transmission loss enhancement through triple-peak coupled resonances acoustic metamaterials. "International journal of mechanical sciences", 15 Març 2024, vol. 266, núm. article 108951.
dc.identifier.issn0020-7403
dc.identifier.urihttp://hdl.handle.net/2117/406515
dc.description.abstractCoupled resonances mechanisms combined with the notion of acoustic metamaterials offer exceptional sound insulation capabilities, even at the challenging low frequency ranges below 1000 Hz. In this context, the concept of Multiresonant Layered Acoustic Metamaterial (MLAM) emerged as a promising practical realization exploiting this phenomenon to produce a double-peak sound transmission loss (STL) response in a multilayer configuration that allows to overcome the challenge of manufacturing. This study proposes a novel enhanced MLAM-based design (MLAM+) that greatly improves the device’s STL response by allowing the coupling of a third additional peak, when compared to equivalent double-peak configurations. In contrast to existing metamaterial-based solutions, this third peak is not caused by local resonance effects, but through inducing a combined zero-stiffness response on the panel. Through analytical and numerical validation, it is demonstrated that the frequency of this third peak can be controlled through the geometrical features of the layered design, and it can be tuned to broaden the effective attenuation bandwidth and/or to increase the level of attenuation without necessarily increasing the overall mass and maintaining the load-bearing capabilities of the panel. This opens the path towards a metamaterial’s design methodology capable of tackling different functional outcomes depending on the application.
dc.description.sponsorshipThe authors acknowledge the Spanish Ministry of Science and Innovation (Spain) (MCIN/AEI/10.13039/501100011033) for supporting G. Sal-Anglada with the PhD Grant PRE2019-088777 under the FPI programme, and for funding this research through the “Severo Ochoa Programme for Centres of Excellence in R and D” (Grant CEX2018-000797-S-19-1) and the AC-METATECH project (TED2021-129413B-C21). This research has also been funded by the Ministry of Research and Universities of the Government of Catalonia (Spain) , through the research grant 2021-PROD-00016 for the project METACOUSTECH.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectÀrees temàtiques de la UPC::Física::Acústica
dc.subject.lcshSoundproofing
dc.subject.lcshMetamaterials
dc.subject.lcshSound--Transmission
dc.subject.otherSound insulation
dc.subject.otherAcoustic metamaterials
dc.subject.otherBroadband attenuation
dc.subject.otherMultilayer panels
dc.subject.otherCoupled resonances
dc.subject.otherZero-stiffness response
dc.titleSound transmission loss enhancement through triple-peak coupled resonances acoustic metamaterials
dc.typeArticle
dc.subject.lemacAïllament acústic
dc.subject.lemacMetamaterials
dc.subject.lemacSo--Transmissió
dc.contributor.groupUniversitat Politècnica de Catalunya. L'AIRE - Laboratori Aeronàutic i Industrial de Recerca i Estudis
dc.identifier.doi10.1016/j.ijmecsci.2023.108951
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0020740323008536
dc.rights.accessOpen Access
local.identifier.drac37882493
dc.description.versionPostprint (published version)
local.citation.authorSal Anglada, G.; Yago, D.; Cante, J.; Oliver, J.; Roca, D.
local.citation.publicationNameInternational journal of mechanical sciences
local.citation.volume266
local.citation.numberarticle 108951


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