Analytical modeling of one-dimensional resonant asymmetric and reciprocal acoustic structures as Willis materials
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Otros documentos de la autoría: Groby, Jean-Philippe; Malléjac, Matthieu; Merkel, Aurélien; Romero-García, Vicent; TOURNAT, Vincent; Torrent, Daniel; Li, Jensen
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Título
Analytical modeling of one-dimensional resonant asymmetric and reciprocal acoustic structures as Willis materialsAutoría
Fecha de publicación
2021-05-14Editor
IOP PublishingCita bibliográfica
Groby, J. P., Malléjac, M., Merkel, A., Romero-García, V., Tournat, V., Torrent, D., & Li, J. (2021). Analytical modeling of one-dimensional resonant asymmetric and reciprocal acoustic structures as Willis materials. New Journal of Physics, 23(5), 053020.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
As building blocks of acoustic metamaterials, resonant scatterers have demonstrated their ability to modulate the effective fluid parameters, which subsequently possess extreme properties such as negative bulk modulus ... [+]
As building blocks of acoustic metamaterials, resonant scatterers have demonstrated their ability to modulate the effective fluid parameters, which subsequently possess extreme properties such as negative bulk modulus or negative mass density. Promising applications have been shown such as extraordinary absorption, focusing, and abnormal refraction for instance. However, acoustic waves can be further controlled in Willis materials by harnessing the coupling parameters. In this work, we derive the closed forms of the effective parameters from the transfer matrix in three asymmetric and reciprocal one-dimensional resonant configurations and exhibit the differences in terms of coupling coefficients. The way in which Willis coupling occurs in spatially asymmetric unit cells is highlighted. In addition, the analysis shows the absence of odd Willis coupling for reciprocal configurations. These effective parameters are validated against experimental and numerical results in the three configurations. This article paves the way of a novel physical understanding and engineering use of Willis acoustic materials. [-]
Publicado en
New Journal of Physics, Vol. 23 (May 2021)Entidad financiadora
ANR-RGC METARoom project
Código del proyecto o subvención
ANR-18-CE08-0021
Derechos de acceso
info:eu-repo/semantics/openAccess
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