Design of a porous material with isotropic negative Poisson's ratio

被引:80
|
作者
Carta, Giorgio [1 ]
Brun, Michele [1 ]
Baldi, Antonio [1 ]
机构
[1] Univ Cagliari, Dipartimento Ingn Meccan Chim & Mat, Piazza Armi, I-09123 Cagliari, Italy
关键词
Auxetic; Negative Poisson's ratio; Metamaterials; Porous medium; Digital Image Correlation; Photoelasticity; AUXETIC MATERIALS; METAMATERIALS; HONEYCOMB; BEHAVIOR; MODULUS;
D O I
10.1016/j.mechmat.2016.02.012
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This paper proposes the design of a two-dimensional porous solid with omni-directional negative Poisson's ratio. The hexagonal periodic distribution of the pores makes the effective behavior isotropic. Both experimental tests and numerical simulations have been performed to determine the effective properties of the porous solid. A parametric study on the effect of the geometrical microstructural parameters is also presented. This auxetic structure is easy to fabricate and can be very useful in several engineering applications. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:67 / 75
页数:9
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