飞机翼面结构布局综合设计方法研究

为了探讨飞机翼面结构主要纵横骨架的最佳布局问题,并提供符合工程实际的、用于概念设计阶段的飞机结构设计方法,本文采用分级优化与集成的策略,该策略分为3个层次。第一个层次为拓扑优化,并由此确定纵向骨架的个数与位置的最优布局;第二个层次为尺寸优化,它用来确定翼面的中间参数;第三个层次为稳定性准则优化,它确定横向骨架的个数与位置的最优布局。在分级优化的3个层次中,拓扑优化是独立的,尺寸优化与稳定性准则优化是相互耦合的。以国外某飞机机翼为例,结果表明本文提出分级优化的思路与所采用的集成方法是可行的,并且具有很好的数值效果。作者认为：它对从事飞机结构设计的人员有一定的指导性和参考价值,值得在飞机设计部门推广应用。最后,总结给出5点结论供参考。

Analysis and Synthesis Based Aircraft Wing Structural Layout Study

In order to study the optimal layout problem about aircraft wing conceptual design and offer a new design approach for practical aircraft engineering, authors presented a strategy of hierarchy optimization and integrated idea, in which three layers were included. The first one belonged to topology optimization that determined the optimal number and position of wing spars. The second one belonged to size optimization that determined the intermediate parameters of wing structure. The third one belonged to stability criterion optimization that determined the optimal number and position of wing ribs. During the hierarchy optimization, the first layerwas an independent optimizationand the last two layers were coupled with each other. A practical aircraft wing was utilized as an example and the optimal results showed that the proposed method was feasible. Therefore, authors supposed that it could give some advice and direction to aircraft designers. Finally five useful conclusions could be drawn from this research work, so the method is deserved to application in structure design department.