单旋翼无人直升机龙骨结构可靠性拓扑优化设计  

Reliability topology optimization design for single rotor unmanned helicopter keel structure

作　　者：万泽国 汪宇峰 吴晓明 WAN Zeguo;WANG Yufeng;WU Xiaoming(School of Aerospace Engineering,Xiamen University,Xiamen 361102,Fujian,China)

机构地区：[1]厦门大学航空航天学院,福建厦门361102

出　　处：《计算机辅助工程》2025年第1期54-58,64,共6页Computer Aided Engineering

基　　金：国家自然科学基金(52075462)。

摘　　要：针对某型单旋翼无人直升机龙骨结构的轻量化,采用变密度法进行可靠性拓扑优化设计。从结构可靠度性出发,在体积约束下建立柔度最小化模型和应力最小化模型2种可靠性拓扑优化模型,对比分析2种优化模型的特点并开展二次设计,得到一种单旋翼无人直升机龙骨结构优化构型。分析结果表明:优化构型的应力和位移性能均能够满足单旋翼无人直升机的正常工作要求,其与原始设计结构相比减重25.1%,实现了轻量化设计目标。As to the lightweighting of the keel structure of a certain type of single rotor unmanned helicopter,the variable density method is used for reliability topology optimization design.Starting from the reliability of the structure,two reliability topology optimization models,flexibility minimization model and stress minimization model,are established under volume constraints.The characteristics of the two optimization models are compared and analyzed,and a secondary design is carried out to obtain an optimized configuration of the single rotor unmanned helicopter keel structure.The analysis results show that the stress and displacement performance of the optimized configuration can meet the normal working requirements of the single rotor unmanned helicopter,and it reduces weight by 25.1%compared to the original design structure,achieving the goal of lightweight design.

关 键 词：龙骨 拓扑优化 变密度法 轻量化 有限元 

分 类 号：TP391.99[自动化与计算机技术—计算机应用技术] V275.1[自动化与计算机技术—计算机科学与技术] V214.1[航空宇航科学与技术—飞行器设计]