某无人机机翼压载变形有限元分析与光学测试  

Finite element analysis of an unmanned aerial-vehicle wing under compressive loading combined with optical testing

作　　者：李湘萍[1] 刘海淙 Li Xiangping;Liu Haicong(Sino-European Institute of Aviation Engineering,Civil Aviation University of China,Tianjin 300300,China;Aircraft Maintenance Engineering Department,Xiamen Airlines,Xiamen 361006,Fujian,China)

机构地区：[1]中国民航大学中欧航空工程师学院,天津300300 [2]厦门航空有限公司飞机维修工程部,厦门361006

出　　处：《现代制造工程》2018年第9期88-93,共6页Modern Manufacturing Engineering

基　　金：中央高校基本科研业务费专项资金项目(3122014H002)

摘　　要：利用ANSYS软件建立了某无人机机翼的全尺寸模型,对其开展有限元分析。模型边界条件采用非线性接触算法,着重研究了算法类型、法向刚度因子及穿透容差对迭代次数和模型刚度的影响。设计了基于三维数字图像相关(3DDIC)技术的试验装置,对机翼压载的变形过程进行直接追踪。分析结果表明:数值模拟与测试结果吻合,所建立的有限元模型合理。最后计算得到蒙皮及机翼内部组件的应力分布,为无人机设计改型提供了有益参考。A full-scale ANSYS model of one UAV wing was developed to carry out Finite Element Analysis （FEA）. Nonlinear contact algorithm was performed to mainly study the effects of algorithm types with different normal stiffness factors and penetration tolerances on the iteration number and the model stiffness. Deformation process of the wing under a compressive loading condition was directly investigated by using the Three-Dimensional Digital Image Correlation（3D-DIC） technique. The numerical results agree well with experimental measurements, showing that the finite element model is rational. Finally, the stress distributions of wing skin and internal components were predicted ,which provided a beneficial reference for further modifications.

关 键 词：无人机机翼 有限元 接触分析 三维数字图像相关 应力分布 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]