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Proceedings Paper

Chiral hexagonal cellular sandwich structure: a vibro-acoustic assessment
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Paper Abstract

In this work we describe the vibroacoustic behavior of a novel concept of core for sandwich structures featuring auxetic characteristics, enhanced shear stiffness and compressive strength compared to classical cellular cores in sandwich components for sandwich applications. The out-plane properties and density values are described in terms of geometric parameters of the honeycomb unit cells. Opposite to classical honeycomb cellular applications, the hexagonal chiral structure presents a noncentresymemetric configuration, i.e., a "mirror" symmetrical topology. The derived mechanical properties are used to assess the modal behaviour and modal densities of sandwich plate elements with chiral and standard cellular cores. The analytical findings are backed up by structural tests on chiral honeycomb plates and sandwich beams.

Paper Details

Date Published: 16 May 2005
PDF: 10 pages
Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); doi: 10.1117/12.599606
Show Author Affiliations
Tze Ling Lew, The Univ. of Sheffield (United Kingdom)
Alessandro Spadoni, Georgia Institute of Technology (United States)
Fabrizio Scarpa, The Univ. of Sheffield (United Kingdom)
Massimo Ruzzene, Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 5760:
Smart Structures and Materials 2005: Damping and Isolation
Kon-Well Wang, Editor(s)

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