一种基于拓扑优化的舵面仿生多级分叉结构设计

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. 

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

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.