桁架式四旋翼无人机异形机架优化设计  

Optimal Design of Novel-Shaped Frame of Truss Quad-Rotor UAV

作　　者：坎标[1] 龚柯健 KAN Biao;GONG Ke-jian(School of Mechanical Engineering and Rail Transit,Changzhou University,Jiangsu Changzhou 213000,China)

机构地区：[1]常州大学机械与轨道交通学院,江苏常州213000

出　　处：《机械设计与制造》2024年第11期281-284,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金(51105046)。

摘　　要：随着多旋翼无人机的广泛应用,其外形的个性化需求越来越受到关注。以杆单元建立了桁架式机架的初始模型,在模型上预设不同的孔或空腔结构,再以杆单元最大许用应力为约束,进行以轻量化为目标的拓扑优化,获得了不同外形的四旋翼无人机机架。结果表明:保持电机和载荷位置不变,机架整体结构都为“X”形;改变孔的形式和位置,能够获得具有不同外形、质量和柔度的机架;预设通孔、沉孔和空腔后的模型优化结果分别呈现平行悬臂、邻接强化悬臂和邻接弱化悬臂的结构。优化结果可为多旋翼无人机机架的异形设计、个性化设计提供参考。With the growing application of multi-rotorUAVs,intensive attentions have been paid to the requirements of their personalized appearances.The initial model of the truss frame was established with the rod element.Different kinds of holes or cavities were created on the initial model.The topology optimization aiming at lightweight was carried out under the maximum allowable stress of the rod element.The quad-rotor UAV frames with different shapes were obtained.The results showed that the overall structure of the frame was "X" shape as the positions of the motors and the load were fixed.The shapes,qualities,and flexibilities of the frame varied if the kind and position of the hole were changed.The parallel cantilevers,adjacent strengthened cantilevers,and adjacent weakened cantilevers were formed on the optimized through-hole model,counterbore model,and cavity model,respectively.The results could be used for references for the novel-shaped design and personalized design of multi-rotor UAV frames.

关 键 词：多旋翼无人机 结构拓扑优化 轻量化设计 桁架 杆单元模型 有限元法 

分 类 号：TH16[机械工程—机械制造及自动化] TH12[航空宇航科学与技术—飞行器设计] V221