Titre :

Dynamical effective parameters of elastic superlattice with strong acoustic contrast between the constituents

Auteur(s) :

Zubov, Yurii [Auteur]
University of North Texas [UNT]
Djafari-Rouhani, Bahram [Auteur]
Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 [IEMN]
Physique - IEMN [PHYSIQUE - IEMN]
Krokhin, Arkadii [Auteur correspondant]
University of North Texas [UNT]

Titre de la revue :

Low Temperature Physics

Pagination :

1280-1284

Éditeur :

American Institute of Physics

Date de publication :

2018

ISSN :

1063-777X

Mot(s)-clé(s) en anglais :

elastic superlattice
Elastic modulus
periodic layered structure

Discipline(s) HAL :

Sciences de l'ingénieur [physics]

Résumé en anglais : [en]

Analytical formulas are obtained for frequency-dependent effective elastic modulus and effective mass density for a periodic layered structure. The proposed homogenization procedure is valid at sufficiently high frequencies ...
Lire la suite >Analytical formulas are obtained for frequency-dependent effective elastic modulus and effective mass density for a periodic layered structure. The proposed homogenization procedure is valid at sufficiently high frequencies well above the lowest band gap in the acoustic spectrum of the structure. It is shown that frequency-dependent effective parameters may take negative values either in different regions of frequencies or in the same quite narrow region. This property demonstrates that the 1D elastic structure may behave in the limit of small Bloch wave vectors as a double-negative acoustic metamaterial. Published by AIP Publishing.Lire moins >

Langue :

Anglais

Vulgarisation :

Non

Collections :

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

Source :

Harvested from HAL