Abstract
In the present work, investigations on the microstructure and mechanical properties of the dragonfly wing are carried out and numerical modeling based on Finite Element Method (FEM) is developed to predict Flight characteristics of dragonfly wings. Vibrational behavior of wings type structures is immensely important in analysis, design and manufacturing of similar engineering structures. For this purpose natural frequencies and mode shapes are calculated. In addition, the kind of deformation in each mode shape evaluated and the ratio between numerical natural frequency and experimental natural frequency presented as damping ratio. The results obtain from present method are in good agreement with same experimental methods.
Highlights
Insect wings appear as highly functional and largely optimized structures in order to coordinate with their flight Characteristics
Studies about insect wings have emphasized on two similar characteristics of insects and that are the wings are kind of mechanism as well as they are typically smart engineering structures
We investigate microstructure properties of dragonfly wing by SEM and create membrane and vein networks model, are calculated base on Finite Element Method (FEM)
Summary
The obtained results from insect wing in particular dragonfly wing (due to unique capabilities and complex structures), together with the average flapping frequency of dragonflies, may be useful to calculate optimized ratio of natural frequency and flapping frequency of the system that can be used to improve performance of Micro Air Vehicle (MAV). This is important that dragonfly wing is a largely optimized structure, because, it can bear many applied stresses with minimum expenditure material in constructing wing during flight
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