Phononic Characteristics of Hexagonal Chiral Lattices

A Spadoni, M Ruzzene, S Gonella, FL Scarpa

Research output: Contribution to journalArticle (Academic Journal)peer-review

198 Citations (Scopus)

Abstract

The current manuscript reports the outcome of investigations on the phononic properties of a chiral cellular structure. The considered geometry features in-plane hexagonal symmetry, whereby circular nodes are connected through 6 ligaments tangent to the nodes themselves. In-plane wave propagation is analyzed through the application of Bloch theorem, which is employed to predict two-dimensional dispersion relations as well as illustrate dispersion properties unique to the considered chiral configuration. Attention is devoted to determining the influence of unit cell geometry on dispersion, band-gap occurrence and wave directionality. Results suggest cellular lattices as potential building blocks for the design of metamaterials of interest for acoustic wave guiding applications
Translated title of the contributionPhononic Characteristics of Hexagonal Chiral Lattices
Original languageEnglish
Pages (from-to)435 - 450
JournalWave Motion
Volume46
DOIs
Publication statusPublished - Nov 2009

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