Optimization and analysis of composite sandwich box beam for solar drones

作     者：Liang ZHANG Dongli MA Muqing YANG Xinglu XIA Yuan YAO Liang ZHANG;Dongli MA;Muqing YANG;Xinglu XIA;Yuan YAO

作者机构：School of Aeronautic Science and EngineeringBeihang UniversityBeijing 100083China 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2021年第34卷第10期

页      面：148-165页

核心收录：

学科分类：08[工学] 082503[工学-航空宇航制造工程] 0825[工学-航空宇航科学与技术] 

基　　金：* Corresponding author: scott.covington@anrmail.anr.state.vt.us 1The Unit is jointly supported by the University of Wyoming  the Wyoming Game and Fish Department  the U.S. Geological Survey  and the Wildlife Management Institute 

主　　题：Buckling analysis Low-order analytical method Multi-stage optimization Sandwich box beam Solar drones 

摘      要：Solar drones have garnered considerably research attention in recent years due to their continuous cruising capability,and the feasibility of design schemes is sensitive to the weight of *** box beam composed of carbon fiber and polymethacrylimide(PMI)foam is conducive to realize the lightweight of *** this study,a two-stage optimization design methodology for sandwich box beam is *** methodology is primarily based on a low-order analytical method for evaluating stress/deflection and the linear buckling analysis method combined with experimental correction factor for predicting the buckling ***,a case study was conducted using an 18-m wingspan solar drone,where the results of mechanical test verified the optimization *** validating the use of sandwich box beam in solar drones of other scales,additional analysis was conducted based on three aspects:(A)effects of stiffness and stability constraints on the design of sandwich box beam;(B)crucial role of the weight of foam inter layer and application scope of sandwich box beam;(C)best method to improve the buckling eigenvalue of sandwich box ***,the methodology and general rules presented in this paper can support the design of light wing beam for solar drones.