Title :

Low frequency sound isolation by a metasurface of Helmholtz ping-pong ball resonators

Author(s) :

Sabat, R. [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Cochin, E. [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Kalderon, M. [Auteur]
National Technical University of Athens [Athens] [NTUA]
Leveque, Gaetan [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]
Antoniadis, I. [Auteur]
National Technical University of Athens [Athens] [NTUA]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]
Pennec (Admin), Yan [Auteur correspondant]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]

Journal title :

Journal of Applied Physics

Pages :

144502

Publisher :

American Institute of Physics

Publication date :

2023-10-14

ISSN :

0021-8979

English keyword(s) :

Acoustical properties
Microphones
Sound source perception
Acoustic metamaterial
Helmholtz resonator
Acoustical materials
Resonator device
Wave mechanics
Finite-element analysis
Frequency spectrum

HAL domain(s) :

Physique [physics]
Sciences de l'ingénieur [physics]

English abstract : [en]

We study both numerically and experimentally an acoustic metasurface based on coupled Helmholtz resonators to obtain broadband low-frequency spectral responses for acoustic insulation. A hierarchical approach is proposed, ...
Show more >We study both numerically and experimentally an acoustic metasurface based on coupled Helmholtz resonators to obtain broadband low-frequency spectral responses for acoustic insulation. A hierarchical approach is proposed, starting from single and coupled Helmholtz resonators, up to a periodic array of resonators. To this end, we performed numerical simulations using the finite element method, in which the resonators are modeled as drilled rigid spheres in airborne environment and experimental demonstrations based on ping-pong balls as Helmholtz resonators in an acoustic reverberation box. We showed the alteration of the low-frequency response of acoustic insulation resulting from inter-unit coupling in acoustic metasurfaces, and the apparition of additional attenuation by inserting a plexiglass board as support for the structure.Show less >

Language :

Anglais

Popular science :

Non

European Project :

INNOVATIVE GROUND INTERFACE CONCEPTS FOR STRUCTURE PROTECTION

Collections :

• Institut d'Électronique, de Microélectronique et de Nanotechnologie (IEMN) - UMR 8520

Source :

Harvested from HAL