无人机机翼模态分析与结构优化设计  

Modal Analysis and Structure Optimization Design of UAV Wing

作　　者：廖耀青 LIAO Yaoqing(Zhejiang College of Security Technology,Wenzhou 325016,China)

机构地区：[1]浙江安防职业技术学院,浙江温州325016

出　　处：《河南科技》2023年第10期48-53,共6页Henan Science and Technology

基　　金：浙江安防职业技术学院2022年校级科研项目“基于多目标优化的无人机机翼结构轻量化设计研究”(AF2022Y04)。

摘　　要：【目的】为避免无人机飞行中出现严重的气动弹性问题,针对无人机机翼刚度分布设计不合理之处,开展无人机机翼模态分析与结构优化设计。【方法】基于正交试验设计提出一种基于模态分析的机翼变截面结构布局轻量化设计研究方案。【结果】基于无人机机翼有限元仿真模型,开展机翼约束模态仿真分析,发现机翼在翼梁、翼肋等方面需要进行尺寸优化设计,进而改善机翼刚度。并提出一种变截面翼梁结构,通过TOPSIS方法进行排序获取了最优解。结果表明,优化后的机翼结构质量降低34%,机翼约束模态频率得到极大改善。【结论】通过模态分析开展无人机机翼结构优化设计,可在满足刚度合理分布的同时,大幅度降低机翼总质量。[Purposes]In view of the unreasonable design of the stiffness distribution of the UAV wing,in or-der to avoid serious aeroelastic problems in the flight of the UAV,the modal analysis and structural optimiza-tion design of the UAV wing were carried out.[Methods]Based on orthogonal experimental design,a light-weight design scheme of wing variable cross-section structure layout based on modal analysis was proposed.[Findings]Based on the finite element simulation model of the UAV wing,the wing constraint modal simula-tion analysis was carried out.It was found that the wing needed to be optimized in terms of wing beam and wing rib,which then improves the wing stiffness.On the other hand,a variable cross-section wing beam structure is proposed,and the optimal solution is obtained by TOPSIS method.The results show that the con-strained modal frequency of the optimized wing structure is greatly improved while the mass is reduced by 34%.[Conclusions]The optimization design of UAV wing structure through modal analysis can greatly re-duce the total mass of the wing while satisfying the reasonable distribution of stiffness.

关 键 词：无人机机翼 模态分析 TOPSIS 结构优化 

分 类 号：V279[航空宇航科学与技术—飞行器设计]