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Title: | An analytical and finite element study on the mechanical properties of irregular hexachiral honeycombs |
Authors: | Mizzi, Luke Attard, Daphne Gatt, Ruben Farrugia, Pierre-Sandre Grima, Joseph N. |
Keywords: | Honeycomb structures Auxetics (Materials) -- Mechanical properties Finite element method Poisson processes Materials -- Mechanical properties Metamaterials -- Mathematical models |
Issue Date: | 2018 |
Publisher: | Institute of Physics Publishing |
Citation: | Mizzi, L., Attard, D., Gatt, R., Farrugia, P. S., & Grima, J. N. (2018). An analytical and finite element study on the mechanical properties of irregular hexachiral honeycombs. Smart Materials and Structures, 27(10), 105016. |
Abstract: | The highly symmetric hexachiral honeycomb with an isotropic Poisson’s ratio of −1 is one of the earliest and most well-known examples of auxetic mechanical metamaterials and has been proposed for numerous applications ranging from satellite antennas to stents. In this work, we propose a novel, less symmetric generic form of the hexachiral honeycomb that is made up of three sets of unequally sized ligaments rather than six identical ones and has the potential to exhibit a wide range of negative Poisson’s ratios. Using finite element analysis, we investigated the deformation behaviour of these generic hexachiral systems and derived an analytical model which may be used to predict the Poisson’s ratio of these systems. The results obtained indicate that the hexachiral topology is extremely versatile with respect to its potential to exhibit diverse mechanical properties and it is hoped that this added tunability will enhance the functionality and applicability of this class of auxetic mechanical metamaterials. |
URI: | https://www.um.edu.mt/library/oar/handle/123456789/104808 |
Appears in Collections: | Scholarly Works - FacSciMet |
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An analytical and finite element study on the mechanical properties of irregular hexachiral honeycombs 2018.pdf Restricted Access | 1.1 MB | Adobe PDF | View/Open Request a copy |
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