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Title: | Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour |
Authors: | Grima, Joseph N. Ravirala, Naveen Galea, Romina Ellul Grech, Brian Attard, Daphne Gatt, Ruben Alderson, Andrew Rasburn, John Evans, Kenneth E. |
Keywords: | Metamaterials Materials -- Mechanical properties Chemical models Calixarenes |
Issue Date: | 2011-01 |
Publisher: | Wiley-VCH |
Citation: | Grima, J. N., Ravirala, N., Galea, R., Ellul, B., Attard, D., Gatt, R., ... Evans, K. E. (2011). Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour. Physica Status Solidi (b), 248(1), 117-122. |
Abstract: | Auxetics exhibit the anomalous property of getting fatter rather than thinner when uniaxially stretched [negative Poisson's ratio (NPR)]. This paper presents an analytical model of a structure constructed from umbrella type sub-units which is predicted to exhibit this property together with the results of mechanical tests of a structure having this geometry. It is shown that such systems can exhibit negative on-axis Poisson's ratio of −1 which means that they maintain their aspect ratio, while Poisson's ratio becomes less negative for loading off-axis. It is also shown that this model can explain the sign and anisotropy of Poisson's ratio demonstrated by a molecular level system constructed from calix(4)arenes having the same geometry. |
URI: | https://www.um.edu.mt/library/oar//handle/123456789/18642 |
Appears in Collections: | Scholarly Works - FacEngME Scholarly Works - FacSciChe Scholarly Works - FacSciMet |
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Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour.pdf Restricted Access | Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour | 617 kB | Adobe PDF | View/Open Request a copy |
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