Elastic Dispersion Analysis of Two Dimensional Phononic Crystals Composed of Auxetic Materials

Autor:	Chia-Nien Tsai, Geng-Ting Liu, I-Ling Chang, Lien Wen Chen
Rok vydání:	2015
Předmět:	Materials science Auxetics business.industry Wave propagation Plane wave expansion method Structural engineering Square lattice Finite element method Crystal Condensed Matter::Superconductivity Dispersion (optics) Acoustic metamaterials Composite material business
Zdroj:	Volume 13: Vibration, Acoustics and Wave Propagation.
Popis:	The wave propagations of two dimensional phononic crystals composed of auxetic materials are studied. The periodic structures consist of square lattice air cylinders in a solid background made of auxetic material. The finite element method and plane wave expansion method are used to obtain the band structures of the phononic crystals. The effects of Poisson’s ratio on the elastic wave propagation within the phononic crystal are investigated. The negative Poisson’s ratio of the auxetic material is shown to have significant effect on the dispersion of the elastic wave within the periodic structures. The results reveal that the phononic crystals composed of auxetic materials can have a great potential for the design of novel acoustic devices.Copyright © 2015 by ASME
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::393ad09f9b03753460d9456b4b6a17c9 https://doi.org/10.1115/imece2015-52920 Zobrazit plný text záznamu