Shankar Vinay, Shirakawa Nagi, Ishihara Daisuke
Department of Intelligent and Control Systems, Kyushu Institute of Technology, 680-4 Kawazu, Iizuka 8208502, Fukuoka, Japan.
Biomimetics (Basel). 2024 Feb 22;9(3):133. doi: 10.3390/biomimetics9030133.
The flapping wings of insects undergo large deformations caused by aerodynamic forces, resulting in cambering. Insect-mimetic micro wings for flapping-wing nano air vehicles mimic these characteristic deformations. In this study, a 2.5-dimensional insect-mimetic micro wing model for flapping-wing nano air vehicles is proposed to realize this type of wing. The proposed model includes a wing membrane, a leading edge, a center vein, and a root vein, all of which are modeled as shell elements. The proposed wing is a 2.5-dimensional structure and can thus be fabricated using polymer micromachining. We conducted a design window search to demonstrate the capabilities of the wing. The design windows, which are areas of desirable design solutions in the design parameter space, are iteratively searched using nonlinear finite-element analysis under quasi-steady aerodynamic modeling. Here, thickness is selected as a design parameter. The properties of real insects, polymer materials, and fabrication conditions are used to determine the other parameters. A fabricable design solution that generates sufficient camber is found from the design windows.
昆虫拍动的翅膀会因气动力而发生大幅变形，从而产生弯曲。用于扑翼纳米飞行器的仿昆虫微翅模仿了这些特征变形。在本研究中，提出了一种用于扑翼纳米飞行器的2.5维仿昆虫微翅模型，以实现这种类型的翅膀。所提出的模型包括一个翼膜、一个前缘、一条中脉和一条根脉，所有这些都被建模为壳单元。所提出的翅膀是一种2.5维结构，因此可以使用聚合物微加工制造。我们进行了设计窗口搜索以展示该翅膀的性能。设计窗口是设计参数空间中理想设计解决方案的区域，在准稳态空气动力学建模下使用非线性有限元分析进行迭代搜索。在此，选择厚度作为设计参数。利用真实昆虫的特性、聚合物材料和制造条件来确定其他参数。从设计窗口中找到了一种能产生足够弯曲的可制造设计解决方案。
