一种异形天线支架的拓扑优化设计与仿真

Topology Optimization Design and Simulation of A Special Shaped Antenna Bracket

针对某型号天线单机在星上特殊安装空间、轻量化和高刚强度要求,借助inspire结构优化软件进行了基于增材制造的异形天线支架拓扑优化一体化设计,分别得到了钛合金和铝合金天线支架的拓扑优化三维模型。利用Patran软件分别对钛合金和铝合金天线支架进行了有限元分析,得到了其刚度特性和应力响应值,并分别得到了两种不同材料的天线支架应力安全裕度值。综合分析结果表明,铝合金拓扑优化天线支架具有更高的刚度和更大的安全裕度,在满足设计的要求下选取铝合金拓扑优化支架作为该异形天线支架的优选设计方案。

Aiming at the special installation requirements,lightweight requirements,strength and stiffness requirements of a certain type of antenna on the satellite,the integrated design of the topology optimization of the special-shaped antenna bracket based on additive manufacturing was carried out with the help of the inspire structure optimization software,and the topology optimization 3D models of the titanium alloy bracket and the aluminum alloy bracket were obtained respectively.Using Patran software,the finite element analysis of titanium alloy and aluminum alloy antenna brackets was carried out,and their stiffness characteristics and stress response values were obtained,and the stress safety margin of antenna brackets of two different materials was analyzed respectively.The comprehensive analysis results show that the aluminum alloy topology optimization bracket has higher stiffness and safety margin,so the aluminum alloy topology optimization bracket is selected as the preferred design scheme for the special-shaped antenna bracket under the same design requirements.