复杂布局机翼结构多约束优化设计

机翼结构需要同时满足强度、刚度、气弹和设备安装等要求,布置多个外挂设备的机翼结构设计约束更加复杂,传统方法难以得到最优方案。本文提出了通过约束机翼剖面弯曲刚度和扭转刚度来控制气动弹性的方法,研究了稳定性和位移敏度计算理论,结合工程准则法和数学规划法,搭建了适用于复杂布局机翼结构的多约束优化流程,以国产结构分析软件HAJIF为平台进行了程序实现,并结合工程机翼案例进行了方法验证。优化结果表明,本文方法能够以静力分析模型为基础,同时考虑强度、刚度和稳定性等多种约束形式,在有限计算机时内给出最优设计方案,具有一定的工程应用价值。

Optimization of Complex Layout Wing-Structures Under Multi-constraints

Wing structures with multiple plug-ins should meet the requirements of strength, stiffness, aeroelastic and assembly of equipment, it is difficult to get the optimal solution with traditional methods. In this paper, an analytical method is proposed to control the aeroelastic characteristics of the wing by restricting the bending and torsion stiffness of the wing section. The displacement and stability constraints sensitivity theories have been researched simultaneously. Then the new multi-constraints optimization process is developed and programmed based on the HAJIF platform. The method is verified by using a real wing model, and the results show that the proposed method can give the optimal design scheme on the unique static analysis model while the strength, stiffness and stability constraints are considered synchronously.