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Interpretation of the Acoustic Black Hole effect based on the concept of critical coupling

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Interpretation of the Acoustic Black Hole effect based on the concept of critical coupling

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dc.contributor.author Leng, J. es_ES
dc.contributor.author Romero García, Vicente es_ES
dc.contributor.author Pelat, A. es_ES
dc.contributor.author Picó Vila, Rubén es_ES
dc.contributor.author Groby, J.P. es_ES
dc.contributor.author GAUTIER, FRANÇOIS es_ES
dc.date.accessioned 2021-03-17T04:32:01Z
dc.date.available 2021-03-17T04:32:01Z
dc.date.issued 2020-04-14 es_ES
dc.identifier.issn 0022-460X es_ES
dc.identifier.uri http://hdl.handle.net/10251/163982
dc.description.abstract [EN] An Acoustic Black Hole (ABH) in a one-dimensional (1D) beam is a passive vibration damping device based on a local reduction of the beam thickness attached to a thin layer of attenuating material. This work aims at revisiting the ABH effect by analysing the ABH trapped modes in the complex frequency plane. This analysis relies on an analytical model based on the one-dimensional thin beam theory and the transfer matrix method which assumes that the ABH termination is discretised by constant thickness piecewise elements. The model is validated with numerical simulations by the Finite Element Method. The reflection coefficients of several ABH terminations are studied. The results show that an ABH presents an infinite number of modes associated to an infinite number of poles and zeros of the reflection coefficient, the density and quality factor of which depend on the order of the ABH profile. By considering the ABH termination as an open lossy resonator, its damping efficiency results therefore from a balance between the energy leakage of each mode and its inherent losses, known as the critical coupling condition. In particular, the broadband absorption of the vibration energy is achieved for frequencies higher than that of the mode that is critically coupled. This type of analysis is used to interpret the ABH effect. It provides the losses needed to obtain the critical coupling condition, and is suitable for the optimisation of one-dimensional ABH terminations. (C) 2020 Elsevier Ltd. All rights reserved. es_ES
dc.description.sponsorship This work has been funded by the RFI Le Mans Acoustic (Region Pays de la Loire) within the framework of the Metaplaque project. This article is based on work from COST action DENORMS CA 15125, supported by COST (European Cooperation in Science and Technology). This work was partly supported by the Spanish Ministry of Economy and Innovation (MINECO), by the European Union FEDER through project FIS2015-65998-C2-2, by the project AICO/2016/060 by Conselleria de Educacion, Investigacion, Cultura y Deporte de la Generalitat Valenciana and by the project eTNAA ANR-17-CE08-0035-01 (projet ANR 2017-2010). es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation COST/CA 15125 es_ES
dc.relation info:eu-repo/grantAgreement/MINECO//FIS2015-65998-C2-2-P/ES/ONDAS ACUSTICAS EN CRISTALES, MEDIOS ESTRUCTURADOS Y METAMATERIALES/ es_ES
dc.relation ANR/ANR-17-CE08-0035-01 es_ES
dc.relation GENERALITAT VALENCIANA/AICO/2016/060 es_ES
dc.relation.ispartof Journal of Sound and Vibration es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Vibration damper es_ES
dc.subject Acoustic Black Hole effect es_ES
dc.subject Reflection coefficient es_ES
dc.subject Critical coupling es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Interpretation of the Acoustic Black Hole effect based on the concept of critical coupling es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.jsv.2020.115199 es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Instituto Universitario de Matemática Pura y Aplicada - Institut Universitari de Matemàtica Pura i Aplicada es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Leng, J.; Romero García, V.; Pelat, A.; Picó Vila, R.; Groby, J.; Gautier, F. (2020). Interpretation of the Acoustic Black Hole effect based on the concept of critical coupling. Journal of Sound and Vibration. 471:1-10. https://doi.org/10.1016/j.jsv.2020.115199 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.jsv.2020.115199 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 10 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 471 es_ES
dc.relation.pasarela S\401288 es_ES
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Region Pays de la Loire es_ES
dc.contributor.funder European Regional Development Fund es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder Agence Nationale de la Recherche, Francia es_ES
dc.contributor.funder European Cooperation in Science and Technology es_ES


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