Chiral hexagonal cellular sandwich structure: a vibro-acoustic assessment

Tze Ling Lew; Alessandro Spadoni; Fabrizio Scarpa; Massimo Ruzzene

doi:10.1117/12.599606

16 May 2005 Chiral hexagonal cellular sandwich structure: a vibro-acoustic assessment

Tze Ling Lew, Alessandro Spadoni, Fabrizio Scarpa, Massimo Ruzzene

Proceedings Volume 5760, Smart Structures and Materials 2005: Damping and Isolation; (2005) https://doi.org/10.1117/12.599606
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

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.

Citation Download Citation

Tze Ling Lew, Alessandro Spadoni, Fabrizio Scarpa, and Massimo Ruzzene "Chiral hexagonal cellular sandwich structure: a vibro-acoustic assessment", Proc. SPIE 5760, Smart Structures and Materials 2005: Damping and Isolation, (16 May 2005); https://doi.org/10.1117/12.599606

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