Zero Poisson's ratio cellular structure for two-dimensional morphing applications

被引：132

作者：

Gong, Xiaobo ^{[1
,2
]}

Huang, Jian ^{[2
,3
]}

Scarpa, Fabrizio ^{[2
]}

Liu, Yanju ^{[3
]}

Leng, Jinsong ^{[1
]}

机构：

[1] Harbin Inst Technol, Ctr Composite Mat & Struct, Harbin 150080, Peoples R China

[2] Univ Bristol, Adv Composites Ctr Innovat & Sci, Bristol BS8 1TR, Avon, England

[3] Harbin Inst Technol, Dept Astronaut Sci & Mech, Harbin 150001, Peoples R China

来源：

COMPOSITE STRUCTURES | 2015年 / 134卷

基金：

中国国家自然科学基金;

关键词：

2D morphing; Zero Poisson's ratio; Cellular structure; Elastic constants; TRANSVERSE-SHEAR MODULUS; HONEYCOMB; FABRICATION; DESIGN;

D O I：

10.1016/j.compstruct.2015.08.048

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

This work presents a novel zero Poisson's ratio (ZPR) honeycomb structure that can achieve deformations along two orthogonal directions and avoid the increase of effective stiffness in the morphing direction by the restraining the Poisson's effect in the non-morphing direction. Opposite to current ZPR honeycombs for one-dimensional wing morphing the proposed novel zero Poisson's ratio honeycomb configuration can perform two-dimensional deformation and present a cellular structure with smooth edges. Analytical models related to the uniaxial, in-plane shear and bounds of the out-of-plane (transverse) shear stiffnesses are derived and validated using the finite element techniques. The in-plane behavior of the honeycomb is investigated using a parametric analysis against the geometry of the unit cell, while the out-of-plane transverse stiffness is also evaluated vs. the gauge thickness of the cellular honeycomb structure panels. The theoretical and numerical models exhibit good agreement and show the potential of this novel ZPR configuration for morphing sandwich panel cores. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：384 / 392

页数：9

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