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Vibroacoustics and wave propagation of novel chiral honeycombs

Vibroacoustics and wave propagation of novel chiral honeycombs

Tee, Kong Fah, Spadoni, A., Scarpa, F. and Ruzzene, M. (2008) Vibroacoustics and wave propagation of novel chiral honeycombs. Proceedings of SPIE: Advanced Materials and Structures, 6928,. ISSN 0277-786X (doi:10.1117/12.776075)

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Abstract

A new class of auxetic cellular solids has been recently developed for enhanced mechanical performance and reduced modal density characteristics for middle and high-frequency behavior. Contrary to classic centresymmetric auxetic (negative Poisson’s ratio° honeycombs, these cellular solids have isotropic in-plane properties with a Poisson’s ratio close to -1, and feature enhanced out-of-plane strength and synclastic curvature. The fl exural and S-H wave propagation behaviour is modelled for these honeycomb structures, and their modal densities estimated by their pass-stop band frequency distributions and integrated over the propagation contant intervals. Experimental tests carries out with noncontact scanning laser vibrometers are used to detect the modal density distributions and their dependence over the unit cell topology.

Item Type: Article
Additional Information: Paper presented at SPIE 15th Annual International Symposium on Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring.
Uncontrolled Keywords: novel tetrachiral honeycomb, vibroacoustics, wave propogation
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Pre-2014 Departments: School of Engineering
School of Engineering > Department of Civil Engineering
Related URLs:
Last Modified: 14 Oct 2016 09:08
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/3298

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