Modelling and testing of a foldable macrostructure exhibiting auxetic behaviour

被引：35

作者：

Grima, Joseph N. ^{[1
]}

Ravirala, Naveen ^{[2
]}

Galea, Romina ^{[1
]}

Ellul, Brian ^{[1
]}

Attard, Daphne ^{[1
]}

Gatt, Ruben ^{[1
]}

Alderson, Andrew ^{[3
]}

Rasburn, John ^{[3
]}

Evans, Kenneth E. ^{[3
]}

机构：

[1] Univ Malta, Fac Sci, Msida 2080, Malta

[2] Univ Bolton, Inst Mat Res & Innovat, Bolton BL3 5AB, England

[3] Univ Exeter, Coll Engn Math & Phys Sci, Exeter EX4 4QF, Devon, England

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2011年 / 248卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

auxetic behaviour; calix[4]arene; mechanical properties; Poisson's ratio; NEGATIVE POISSONS RATIO; MECHANICAL-PROPERTIES; INTERNATIONAL WORKSHOP; PROCESSING PARAMETERS; NETWORKED POLYMERS; FOAM MATERIALS; SYSTEMS; DEFORMATION; DESIGN; FIBERS;

D O I：

10.1002/pssb.201083982

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 [凝聚态物理];

摘要：

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. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：117 / 122

页数：6

共 38 条

[1]

The effect of processing parameters on the mechanical properties of auxetic polymeric fibers [J].