Effects of fine-scale features on the elastic properties of zero Poisson's ratio honeycombs

被引：32
|
作者：
Huang, Jiale [1 ]
Liu, Wangyu [1 ]
Tang, Aimin [2 ]
机构：
[1] South China Univ Technol, Sch Mech & Automot Engn, Wushan Rd, Guangzhou 510641, Guangdong, Peoples R China
[2] South China Univ Technol, State Key Lab Pulp & Paper Engn, Guangzhou 510641, Guangdong, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2018年 / 236卷
基金：
中国国家自然科学基金;
关键词：
Cellular materials; Cell wall thickness; Corner radius; Zero Poisson's ratio; Elastic properties; SOLID DISTRIBUTION;
D O I：
10.1016/j.mseb.2018.11.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Cellular structures with zero Poisson's ratio (ZPR) have potential application in tissue engineering. Although the Poisson's ratio of a certain network is mainly determined by the internal cell wall arrangement, it is also influenced by the fine-scale geometry parameters. In this paper, the effects of cell wall relative thickness and the corner radius on the elastic properties of two types of ZPR cellular structures, including reversed semi-re-entrant (RSRE) and semi-re-entrant (SRE) honeycombs, were investigated by means of finite element method (FEM). The result shows that the cell wall relative thickness and the corner radius have a significant effect on the Poisson's ratios of RSRE and SRE honeycombs. This phenomenon is attributed to the deformation effect of the vertexes and it can be eliminated by altering the effective length of the inclined strut. This effect is also validated as documented later by our experiments.
引用
收藏
页码：95 / 103
页数：9
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