Please use this identifier to cite or link to this item:
Title: On the auxetic properties of generic rotating rigid triangles
Authors: Grima, Joseph N.
Chetcuti, Elaine
Manicaro, Elaine
Attard, Daphne
Camilleri, Matthew
Gatt, Ruben
Evans, Kenneth E.
Keywords: Materials -- Elastic properties
Rotational motion (Rigid dynamics)
Foamed materials
Specific gravity
Issue Date: 2012-03
Publisher: The Royal Society of London
Citation: Grima, J. N., Chetcuti, E., Manicaro, E., Attard, D., Camilleri, M., Gatt, R., & Evans, K. E. (2012). On the auxetic properties of generic rotating rigid triangles. Proceedings: Mathematical, Physical and Engineering Sciences, 468(2139), 810-830.
Abstract: Materials having a negative Poisson’s ratio (auxetic) get fatter rather than thinner when uniaxially stretched. This phenomenon has been often explained through models that describe how particular geometric features in the micro or nanostructure of the material deform when subjected to uniaxial loads. Here, a new model based on scalene rigid triangles rotate relative to each other will be presented and analysed. It is shown that this model can afford a very wide range of Poisson’s ratio values, the sign and magnitude of which depends on the shape of the triangles and the angles between them. This new model has the advantage that it is very generic and may be potentially used to describe the properties in various types of materials, including auxetic foams and their relative surface density. Specific applications of this model, such as a blueprint for a system that can exhibit temperature-dependent Poisson’s ratios, are also discussed.
Appears in Collections:Scholarly Works - FacM&SPB
Scholarly Works - FacSciChe
Scholarly Works - FacSciMet

Files in This Item:
File Description SizeFormat 
OA - On the auxetic properties of generic rotating rigid triangles.1.pdfOn the auxetic properties of generic rotating rigid triangles740.98 kBAdobe PDFView/Open

Items in OAR@UM are protected by copyright, with all rights reserved, unless otherwise indicated.