基于不同网格模型的机翼型架外形分步优化设计  

Stepwise Optimization Design of Wing Jig Shape Based on Different Grid Models

作　　者：张睿 崔德刚 裴志刚 袁武[4] 李岩 Zhang Rui;Cui Degang;Pei Zhigang;Yuan Wu;Li Yan(Chinese Aeronautical Establishment,Beijing 100012,China;Science and Technology Committee of Aviation Industry Corporation of China,Beijing 100012,China;AVIC Shenyang Aircraft Design&Research Institute,Shenyang 110035,China;Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]中国航空研究院,北京100012 [2]航空工业科学技术委员会,北京100012 [3]航空工业沈阳飞机设计研究所,辽宁沈阳110035 [4]中国科学院,北京100190

出　　处：《航空科学技术》2021年第12期18-26,共9页Aeronautical Science & Technology

摘　　要：机翼型架外形是机翼实际生产外形。型架外形结构设计中通常涉及结构强度优化和结构变形的迭代,两种分析考核的结构响应不同,适用的最佳网格密度也不同。基于同一网格模型完成诸如多目标的优化往往会造成精度不够、变形迭代无法收敛的情况。基于不同密度网格模型,采用分步优化策略,先通过反向迭代法得到自然网格模型下的初始型架外形,然后对此外形下的精细网格模型进行结构强度优化,将其优化结果映射至自然网格模型,基于自然网格模型完成型架外形的变形优化。最终确定的型架外形结果不仅满足强度要求,而且型架外形变形后与理想外形扭角分布也基本一致。The jig shape is the actual production shape of the wing. The optimization of structural strength and the iteration of structural deformation are usually involved in the jig shape structure design. The structural responses derived from two analysis processes are different, so as the optimal grid model density for the two processes. A multiobjective optimization based on the same mesh model usually results in that the accuracy is not enough and the deformation iteration cannot converge. Based on different density grid models, a stepwise optimization strategy is adopted. First, the initial wing jig shape is obtained by the reverse iteration method. Then, the structural strength is optimized by using the fine mesh model under the jig shape. The optimization results are mapped to the natural grid model, and the deformation optimization of the jig shape is completed based on the natural grid model. The final jig shape can not only meet the strength requirements, but also the twist angle distribution of the wing after deformation is basically consistent with the ideal shape.

关 键 词：型架外形 复合材料结构优化 网格变量映射 遗传算法 

分 类 号：V22[航空宇航科学与技术—飞行器设计]