Phononic properties of hexagonal chiral lattices

Alessandro Spadoni; Massimo Ruzzene; Stefano Gonella; Fabrizio Scarpa

doi:10.1016/j.wavemoti.2009.04.002

Phononic properties of hexagonal chiral lattices

Alessandro Spadoni, Massimo Ruzzene, Stefano Gonella, Fabrizio Scarpa

Civil, Environmental, and Geo- Engineering

Research output: Contribution to journal › Article › peer-review

310 Scopus citations

Abstract

The 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 six 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 meta-materials of interest for acoustic wave-guiding applications.

Original language	English (US)
Pages (from-to)	435-450
Number of pages	16
Journal	Wave Motion
Volume	46
Issue number	7
DOIs	https://doi.org/10.1016/j.wavemoti.2009.04.002
State	Published - Nov 2009

Keywords

Band gaps
Caustics
Chiral lattices
Phononic materials
Wave propagation
Wave-guiding

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10.1016/j.wavemoti.2009.04.002

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title = "Phononic properties of hexagonal chiral lattices",

abstract = "The 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 six 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 meta-materials of interest for acoustic wave-guiding applications.",

keywords = "Band gaps, Caustics, Chiral lattices, Phononic materials, Wave propagation, Wave-guiding",

author = "Alessandro Spadoni and Massimo Ruzzene and Stefano Gonella and Fabrizio Scarpa",

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language = "English (US)",

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pages = "435--450",

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T1 - Phononic properties of hexagonal chiral lattices

AU - Spadoni, Alessandro

AU - Ruzzene, Massimo

AU - Gonella, Stefano

AU - Scarpa, Fabrizio

PY - 2009/11

Y1 - 2009/11

N2 - The 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 six 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 meta-materials of interest for acoustic wave-guiding applications.

AB - The 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 six 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 meta-materials of interest for acoustic wave-guiding applications.

KW - Band gaps

KW - Caustics

KW - Chiral lattices

KW - Phononic materials

KW - Wave propagation

KW - Wave-guiding

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DO - 10.1016/j.wavemoti.2009.04.002

M3 - Article

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SN - 0165-2125

VL - 46

SP - 435

EP - 450

JO - Wave Motion

JF - Wave Motion

IS - 7

ER -

Phononic properties of hexagonal chiral lattices

Abstract

Keywords

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