Publications
[2017-Vol.14-Issue 3]Role of Soft Matter in the Sandwich Vein of Dragonfly Wing in Its Configuration and Aerodynamic Behaviors
Post: 2017-09-06 16:16  View:1916

Journal of Bionic Engineering

Volume 14, Issue 3, July 2017, Pages 557-566
 
Xishu Wang1 , Zhihao Zhang1 , Huaihui Ren1,2, Yinglong Chen1,3, Bisheng Wu4
1. Department of Engineering Mechanics, Applied Mechanics Laboratory, Tsinghua University, Beijing 100084, China
2. China Longyuan Power Group Corporation Limted, China Goudian, Beijing 100034, China
3. Department of Mechanical Engineering, Purdue University, West Lafayette, 47907, USA
4. CSIRO Energy, 71 Normanby Road, Clayton, VIC3168, Australia
 

Abstract

The microstructure of the main longitudinal veins of the dragonfly wing and the aerodynamic behaviors of the wing were investigated in this paper. The microstructure of longitudinal vein presents two circumferential chitin layers and a protein-fiber soft layer. The dragonfly wing is corrugated due to the spatial arrangement of longitudinal veins. It was found that the corrugation angle could significantly influence the lift/drag ratio across a range of attack angles by the wind tunnel experiments. The results of the finite element analysis indicate that the protein soft layer of vein facilitates the change of the corrugation angle by allowing substantial relative twisting deformation between two neighboring veins, which is not possible in veins without a soft sandwich layer.

Keywords

dragonfly wing;
longitudinal vein;
sandwich structuresoft matter;
corrugation behavior
 


Full text is available at http://www.sciencedirect.com/science/article/pii/S1672652916604213

 

Address: C508 Dingxin Building, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
Copyright © 2024 International Society of Bionic Engineering All Rights Reserved
吉ICP备11002416号-1