Analytical study of the propagation of acoustic waves in a 1D weakly disordered lattice - Archive ouverte HAL Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2003

Analytical study of the propagation of acoustic waves in a 1D weakly disordered lattice

Résumé

This paper presents an analytical approach of the propagation of an acoustic wave through a normally distributed disordered lattice made up of Helmholtz resonators connected to a cylindrical duct. This approach allows to determine analytically the exact transmission coefficient of a weakly disordered lattice. Analytical results are compared to a well-known numerical method based on a matrix product. Furthermore, this approach gives an analytical expression of the localization length apart from the Bragg stopband which depends only on the standard deviation of the normal distribution disorder. This expression permits to study on one hand the localization length as a function of both disorder strength and frequency, and on the other hand, the propagation characteristics on the edges of two sorts of stopbands (Bragg and Helmholtz stopbands). Lastly, the value of the localization length inside the Helmholtz stopband is compared to the localization length in the Bragg stopband.
Fichier principal
Vignette du fichier
Article_Hal_Richoux_Morand_Simon.pdf (219.5 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00358586 , version 1 (04-02-2009)

Identifiants

Citer

Olivier Richoux, E. Morand, Laurent Simon. Analytical study of the propagation of acoustic waves in a 1D weakly disordered lattice. 2003. ⟨hal-00358586⟩
179 Consultations
462 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More