摘要
飞机模块化设计可以增加飞机的任务类型,降低成本。在机翼模块化结构设计初期,由于翼尖变形量不明确导致无法衡量不同展长机翼的结构刚度特征对系统目标函数(结构质量最小)的贡献差异。针对上述问题,在灵敏度协调优化方法的基础上,系统级中引入各子系统级的权重系数模拟实际设计工作中不同子系统对系统目标函数的贡献存在差别的现象,并给出不同展长机翼结构(不同子系统级)的权重系数的计算方法,形成含子系统级权重的灵敏度协调优化方法;通过模块化桁架和模块化机翼结构优化算例的求解,对模块化机翼初步结构设计方法进行验证。结果表明:含子系统级权重的灵敏度协调优化方法能够获得既满足强度要求又具有一定刚度的模块化机翼初步结构。
Aircraft modular design can increase the types of missions and reduce costs.In the initial stage of wing modular structure design,the unclearness of wingtip deformation limits the ability to assess the contribution differences of structural stiffness characteristics among wings with different spans to the system objective function(mini⁃mal structural weight).Aiming at the above problems,the weight coefficients of each subsystem level in the sys⁃tem level is introduced on the basis of the sensitivity coordinated optimization method to simulate the phenomenon that different subsystems contribute differently to the objective function of the system in the actual design work,and the computation methods of weight coefficients of the wing structures with different spreading lengths(different subsystems levels)is given.The sensitivity coordinated optimization method with subsystem level weights is formed.The preliminary structure design method of modular wing is verified by solving the modular truss and modular wing structure optimization example.The results show that the sensitivity-coordinated optimization method that includes subsystem weights can obtain a modular wing preliminary structure that satisfies both strength require⁃ments and a certain degree of stiffness.
作者
樊福磊
李毅
陈春颖
贾兆虎
FAN Fulei;LI Yi;CHEN Chunying;JIA Zhaohu(School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,China;Xi’an Aisheng Technology Corporation,Xi’an 710065,China)
出处
《航空工程进展》
2025年第1期158-168,共11页
Advances in Aeronautical Science and Engineering
关键词
模块化飞机
模块化结构
结构优化
灵敏度协调优化
子系统权重
modular aircraft
modular structure
structural optimization
sensitivity coordinated optimization
subsystem weights
作者简介
通信作者:李毅(1981-),男,博士,副教授。E-mail:Liyi504@nwpu.edu.cn。
