一种基于拓扑优化的舵面仿生多级分叉结构设计  

A Bio-Oriented Multi-Bifurcation Rudder Structure Based on Topology Optimization

作　　者：王昕江 郭力[1] 金朋 吕计男[1] WANG Xin-jiang;GUO Li;JIN Peng;LYU Ji-nan(China Academy of Aerospace Aerodynamics,Beijing 100074,China;Huazhong University of Science and Technology,Wuhan 430074,China)

机构地区：[1]中国航天空气动力技术研究院,北京100074 [2]华中科技大学,湖北武汉430074

出　　处：《气体物理》2020年第6期45-51,共7页Physics of Gases

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.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.

关 键 词：气动弹性响应 拓扑优化 气动载荷 舵结构 

分 类 号：V211.47[航空宇航科学与技术—航空宇航推进理论与工程]