蜻蜓翅膀拱形结构静力学分析

Dragonfly Wing Structural Stiffness of the Finite Element Analysis

[目的]探索起拱在蜻蜓翅膀空间结构中的重要作用。[方法]应用有限元分析软件ANSYS对各模型在不同载荷作用下的变形情况进行静力学分析,研究蜻蜓翅膀的拱形结构对刚度的影响。[结果]在相同载荷条件下,2种网格模型的结构刚度都随起拱高度的增加而增大。当载荷及拱高相同时,有膜网格的变形小于无膜网格,刚度明显增强;无论有膜网格还是无膜网格,在相同载荷条件下,六边形网格的变形总大于组合网格模型。[结论]该研究可为温室结构仿生设计和应用提供新思路。

[ Objective ] The research aimed to explore the important role of arching in the spatial structure of dragonfly wing. [ Method ] Static analysis on the distortion situations of different models was made under different load actions by using finite element analysis software ANSYS. The effects of arch structure of dragonfly wing on the structural stiffness were studied. [ Result ] Under the same load conditions, the structural rigidity of two gridding models increased with the arching height. When the load and arch height were the same, the deformation of the mem- brane grid was less than the membrane-free mesh and the stiffness was significantly enhanced. Whether membrane grid or membrane-free grid, the deformation of hexagonal network was always greater than that of combined grdidding model. [ Conclusion] The research could provide new idea for the bionic design and application of greenhouse structure.