| 一种基于拓扑优化的舵面仿生多级分叉结构设计 |
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| 作者姓名： | 王昕江 郭力 金朋 吕计男 |
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| 作者单位： | 中国航天空气动力技术研究院, 北京100074;华中科技大学, 湖北武汉430074 |
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| 摘 要： | 新型面对称高速飞行器面临着宽速域、宽动压飞行条件，受到此类飞行器装载与装填比要求的限制，飞行器的主要承力结构重量较低，为了突破传统结构设计方法面临的结构减重极限，文章提出了一种基于拓扑结构轻质化的优化设计方法.该方法的主要思想为根据具体的载荷工况，在优化区域中获得最优的传力路径.通过对面对称高速飞行器的舵应用此优化方法，在多种载荷作用下，获得了多级分叉的仿生结构.通过验证计算表明设计得到的结构不仅重量减轻，还能够满足静气动弹性变形与强度要求，从而验证了此方法进行结构设计的可行性.
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| 关 键 词： | 气动弹性响应 拓扑优化 气动载荷 舵结构 |
| 收稿时间： | 2020-05-25 |
A Bio-Oriented Multi-Bifurcation Rudder Structure Based on Topology Optimization |
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| Affiliation: | 1.China Academy of Aerospace Aerodynamics, Beijing 100074, China2.Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Plane-symmetric reentry vehicles are designed to operate in a wide range of Mach numbers and dynamic pressures. Confined by the requirements of vehicles on the pay-loads, there would be a small portion of the total weight remained for the vehicle structure. To overcome the weight confinement of this kind of vehicles, topology optimization method was applied to a typical rudder structure. Based on the loads of the structure, the most efficient load transfer path was obtained by the optimization method. This method results in a bio-oriented multi-bifurcation structure, as applied to a typical rudder on a plane-symmetric reentry vehicle. Validation of the structure shows that the resulted structure not only reduces its weight but also satisfies the strength and aeroelasticity requirements. |
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