We study the interaction of acoustic waves with a metasurface which consists in a periodic array of Helmholtz resonators. This is done owing to an effective model derived from an asymptotic homogenization procedure in the time domain. Explicit expressions of the reflection and transmission coefficients are provided. Application of the effective model to design perfect absorbing wall is shown.
LMA - Laboratoire de Mécanique et d’Acoustique
K. Pham - Effective behavior of an array of Helmholtz resonators
Amphithéâtre François Canac, LMA
Le 1er mars 2022 de 11h00 à 12h00
Kim Pham / Ensta / Lauréat du prix Jean Mandel 2021
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