针对大型飞机弹性机翼初步设计阶段涉及的气动弹性问题,在建立大展弦比机翼三维有限元模型的基础上,研究前、后翼梁位置参数对气动弹性特性分析和优化结果的影响规律,为翼盒结构设计提供指导.研究表明,气动弹性优化对于结构设计获得可行解和更优解效果明显,前梁位置参数相对后梁对分析和优化结果的影响较大,且两种规律有所区别.此外,部分关键约束条件的愈加苛刻会导致结构质量显著增加,合理的约束限制对于优化结果有着重要意义. Aiming at the problem of aeroelasticity involved in the preliminary design phase of the large aircraft wing, based on the establishment of the three-dimensional finite element model of the large aspect ratio wing, the influence of the position parameters of the front and rear spars on the aeroelastic characteristics and optimization results , Which provides guidance for the design of the wing box structure.The results show that the aeroelasticity optimization has obvious effect on the structural design of the feasible solution and the better solution.The front beam position parameter has a greater impact on the analysis and optimization results than the rear beam, In addition, the more severe part of the key constraints will lead to a significant increase in the quality of the structure, and reasonable restrictions on constraints is of great significance to optimize the results.