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Proceedings Paper

Novel design of honeycombs using a seamless combination of auxetic and conventional cores toward phononic band gap engineering
Author(s): Sushovan Mukherjee; Fabrizio Scarpa; S. Gopalakrishnan
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Paper Abstract

A novel design for the geometric configuration of honeycombs using a seamless combination of auxetic and conventional cores-elements with negative and positive Possion ratios respectively, has been presented. The proposed design has been shown to generate a superior band gap property while retaining all major advantages of a purely conventional or purely auxetic honeycomb structure. Seamless combination ensures that joint cardinality is also retained. Several configurations involving different degree of auxeticity and different proportions auxetic and conventional elements have been analyzed. It has been shown that the preferred configurations open up wide and clean band gap at a significantly lower frequency ranges compared to their pure counterparts. In view of existence of band gaps being desired feature for the phononic applications, reported results might be appealing. Use of such design may enable superior vibration control as well. Proposed configurations can be made isovolumic and iso-weight giving designers a fairer ground of applying such configurations without significantly changing size and weight criteria.

Paper Details

Date Published: 3 April 2015
PDF: 17 pages
Proc. SPIE 9434, Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2015, 94340L (3 April 2015); doi: 10.1117/12.2083780
Show Author Affiliations
Sushovan Mukherjee, Indian Institute of Science (India)
Fabrizio Scarpa, Univ. of Bristol (United Kingdom)
S. Gopalakrishnan, Indian Institute of Science (India)

Published in SPIE Proceedings Vol. 9434:
Nanosensors, Biosensors, and Info-Tech Sensors and Systems 2015
Vijay K. Varadan, Editor(s)

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