Broadband attenuation of Lamb waves through a periodic array of thin rectangular junctions

Moiseyenko, Rayisa P.; Pennec, Yan; Marchal, Rémi; Bonello, Bernard; Djafari-Rouhani, Bahram

Document type :

Article dans une revue scientifique

DOI :

10.1103/PhysRevB.90.134307

Title :

Broadband attenuation of Lamb waves through a periodic array of thin rectangular junctions

Author(s) :

Moiseyenko, Rayisa P. [Auteur]
Pennec, Yan [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Marchal, Rémi [Auteur]
Institut des Nanosciences de Paris [INSP]
Bonello, Bernard [Auteur]
Institut des Nanosciences de Paris [INSP]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]

Journal title :

Physical Review B: Condensed Matter and Materials Physics (1998-2015)

Pages :

134307

Publisher :

American Physical Society

Publication date :

2014

ISSN :

1098-0121

HAL domain(s) :

Physique [physics]/Matière Condensée [cond-mat]

English abstract : [en]

We study theoretically subwavelength physical phenomena, such as resonant transmission and broadband sound shielding for Lamb waves propagating in an acoustic metamaterial made of a thin plate drilled with one or two row(s) ...
Show more >We study theoretically subwavelength physical phenomena, such as resonant transmission and broadband sound shielding for Lamb waves propagating in an acoustic metamaterial made of a thin plate drilled with one or two row(s) of rectangular holes. The resonances and antiresonances of periodically arranged rectangular junctions separated by holes are investigated as a function of the geometrical parameters of the junctions. With one and two row(s) of holes, high frequency specific features in the transmission coefficient are explained in terms of a coupling of incident waves with both Fabry-Perot oscillations inside the junctions and induced surface acoustic waves between the homogeneous part of the plate and the row of holes. With two rows of holes, low frequency peaks and dips appear in the transmission spectrum. The choice of the distance between the two rows of holes allows the realization of a broadband low frequency acoustic shielding with attenuation over 99% for symmetric waves in a wide low frequency range and over 90% for antisymmetric ones. The origin of the transmission gap is discussed in terms of localized modes of the ``H'' element made by the junctions, connecting the two homogeneous parts of the plate.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :