The Relationship Between Dragonfly Wing Structure and Torsional Deformation
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文摘
The effect of wing corrugation on torsional deformation was investigated for dragonfly wings. Wing corrugation dramatically increases the warping rigidity, without significantly increasing the torsional rigidity. This behavior implies that the warping moment, which is proportional to the warping rigidity, has a larger resistance against the external moment than does the torsional moment by Saint-Venant's theory, which is proportional to the torsional rigidity. The larger warping rigidity means the wing can be thinner, provided the maximum deformation is restricted. Such a thinner, lighter wing is more suitable for beating flight because such wings have better aerodynamic performance and require lower inertial power.