NDLI: A comparative study of the effects of constructional elements on the mechanical behaviour of dragonfly wings

Content Provider	Springer Nature Link
Author	Rajabi, H. Rezasefat, M. Darvizeh, A. Dirks, J. H. Eshghi, Sh. Shafiei, A. Mostofi, T. Mirzababaie Gorb, S. N.
Copyright Year	2015
Abstract	Although wings of insects show a large variation in morphology, they are all made from a network of irregular veins interconnected through membranous areas. Depending on their shape, size, and position, wing veins are usually divided into three different groups: longitudinal veins, cross-veins and ambient veins. The veins together with the membrane and some other elements such as spines, nodus and pterostigma can be considered as the wing’s “constructional elements”. In spite of rather extensive literature on dragonfly wing structure, the role of each of these elements in determining the wing’s function remains mostly unknown. As this question is difficult to answer in vivo using biomechanical experiments on actual wings, this study was undertaken to reveal the effects of the constructional elements on the mechanical behaviour of dragonfly wings by applying numerical simulations. An image processing technique was used to develop 12 finite element models of the insect wings with different constructional elements. The mechanical behaviour of these models was then simulated under normal and shear stresses due to tension, bending and torsion. A free vibration analysis was also performed to determine the resonant frequencies and the mode shapes of the models. For the first time, a quantitative comparison was carried out between the mechanical effects selectively caused by different elements. Our results suggest that the complex interactions of veins, membranes and corrugations may considerably affect the dynamic deformation of the insect wings during flight.
Starting Page	1
Ending Page	13
Page Count	13
File Format	PDF
ISSN	09478396
Journal	Applied Physics A
Volume Number	122
Issue Number	1
e-ISSN	14320630
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-12-23
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Condensed Matter Physics Optical and Electronic Materials Nanotechnology Characterization and Evaluation of Materials Surfaces and Interfaces, Thin Films Operating Procedures, Materials Treatment
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Science

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