无人机翼梁接头的传力路径分析与多目标遗传算法优化  

Load-path Analysis and NSGA-ⅡOptimization for Wing Spar Joints of a UAV

作　　者：邢宝峰 徐文 XING Bao-feng;XU Wen(AVIC Jincheng Unmanned Systems Co.,Ltd.,Nanjing 210002,China)

机构地区：[1]中航金城无人系统有限公司产品研发部,南京210002

出　　处：《科学技术与工程》2023年第23期10127-10132,共6页Science Technology and Engineering

基　　金：国家重点研发计划(2020YFC1911600)。

摘　　要：在构建的精细有限元模型基础上,开展了某型垂直起降固定翼无人机的关键连接件--翼梁接头的结构优化设计。为了外机翼拆装方便可靠,中央翼和外翼的前后梁采用耳片接头形式连接。通过对翼梁接头构建精细化的有限元模型,仿真计算时真实保留了结构的全部细节特征。利用有限元仿真软件对前梁接头进行了强度计算分析,找到了高应力危险区域。根据强度分析结果,结合传力路径分析和多目标遗传优化算法中的非支配排序遗传算法-Ⅱ(non-dominated sorting genetic algo-rithm-Ⅱ,NSGA-Ⅱ),对结构进行了优化设计。分析结果表明,优化后的前梁接头最大应力显著降低,满足安全使用要求,前梁接头的刚度提高至原来1.5倍,优化效果显著。Based on the constructed fine finite element model,the structural optimization for wing spar joints,which were the key connections of a vertical takeoff and landing unmanned aerial vehicle,was carried out.In order to assemble the outer wing conveniently and reliably,the front and rear spars between the central wing and the outer wing were connected by lug joints.By constructing a fine finite element model for the wing spar joints,all the structure details were preserved in the simulation.Finite element simulation soft-ware was used to analyze the strength of the front spar joints,and the high stress areas were found.According to the strength analysis results,combined with load-path analysis and non-dominated sorting genetic algorithm-II(NSGA-Ⅱ),the structural optimization was carried out.Results show that the maximum stress of the optimized front spar joints is significantly reduced to meet the safety require-ments.The stiffness of the joints are increased to 1.5 times,indicating that the optimization effect is remarkable.

关 键 词：翼梁接头 精细有限元模型 传力路径 NSGA-Ⅱ 

分 类 号：V224[航空宇航科学与技术—飞行器设计]