东南大学学报（自然科学版）2011，Vol.41Issue(1)：82-88,7.DOI:10.3969/j.issn.1001-0505.2011.01.017
昆翅在飞行中的动态形变
Dynamic deformation of insect wing in flight
摘要
Abstract
The dynamic deformation mechanisms of an insect wing in flight were studied by a theoretical modeling approach. The experimental platform for measuring wing's aerodynamic forces designed to demonstrate the ‘flexible wedge effect’ theory, which could explain the influences of a wing's quasi-static deformation on its aerodynamic forces. The variable stiffness property of the wing was investigated, and it shows superiority and reality when the distribution of flexural stiffness in the chordwise direction is in accordance with a binomial function. Further, the variable stiffness property of insect wing's structure is highlighted as a basic condition for generating a high amount of lift. A simplified mechanical model of flexible wing was established, and the deformation modal of the wing under the combined actions of aerodynamic forces and inertia forces is solved through coordinate transformation approaches. Taking the hovering flight of a bumblebee as an example, the twodimensional curves of the wing's dynamic deformations at several critical moments are presented,and the essence of the unsteady deformation of the wing, which is convex or concave in the incoming flow, is detailed. The above researches have paved a way for further study in revealing contributions of wing's flexibility to its aerodynamic performance.关键词
昆虫/柔性翅/变刚度/翅形变/理论模化Key words
insect/ flexible wing/ variable stiffness/ wing deformation/ theoretical modeling分类
生物科学引用本文复制引用
陆光,颜景平,张志胜,史金飞,金晓怡..昆翅在飞行中的动态形变[J].东南大学学报（自然科学版）,2011,41(1):82-88,7.基金项目
国家高技术研究发展计划(863 计划)资助项目(2006AA040202)、江苏省"六大人才"高峰资助项目(2008144)、国家重点实验室开放基金资助项目(MSV-2009-08)、东南大学优秀青年教师教学科研资助项目(200902). （863 计划）
