Chiral three-dimensional isotropic lattices with negative Poisson's ratio

被引：137

作者：

Ha, Chan Soo ^{[1
]}

Plesha, Michael E. ^{[1
]}

Lakes, Roderic S. ^{[1
]}

机构：

[1] Univ Wisconsin, Dept Engn Phys, Madison, WI 53706 USA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2016年 / 253卷 / 07期

基金：

美国国家科学基金会;

关键词：

auxetic; chirality; Cosserat; isotropy; negative Poisson's ratio; CELLULAR MATERIALS; BEHAVIOR; ELASTICITY; POLYMERS; SYSTEM; FOAM;

D O I：

10.1002/pssb.201600055

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Chiral three-dimensional isotropic cubic lattices with rigid cubical nodules and multiple deformable ribs are developed and analyzed via finite element analysis. The lattices exhibit geometry-dependent Poisson's ratio that can be tuned to negative values. Poisson's ratio decreases from positive to negative values as the number of cells increases. Isotropy is obtained by adjustment of aspect ratio. The lattices exhibit significant size effects. Such a phenomenon cannot occur in a classical elastic continuum but it can occur in a Cosserat solid. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：1243 / 1251

页数：9

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