力学与实践 ›› 2020, Vol. 42 ›› Issue (5): 571-575.DOI: 10.6052/1000-0879-20-026

• 应用研究 • 上一篇    下一篇

考虑结构失稳特征的复合材料机翼气动弹性优化设计

刘晓晨1)   

  1. 上海飞机设计研究院,上海 201210
  • 收稿日期:2020-01-16 修回日期:2020-03-07 出版日期:2020-10-08 发布日期:2020-10-22
  • 通讯作者: 1) E-mail:1203701947@qq.com

AEROELASTIC OPTIMIZATION DESIGN OF COMPOSITE WING WITH CONSIDERATION OF STRUCTURAL INSTABILITY

LIU Xiaochen1)   

  1. Shanghai Aircraft Design and Research Institute, Shanghai 201210, China
  • Received:2020-01-16 Revised:2020-03-07 Online:2020-10-08 Published:2020-10-22

摘要: 从工程数学求解和有限元分析角度对复合材料结构的稳定性分析方法进行研究,基于这两个方面分别建立了同时考虑壁板稳定性约束和气动弹性约 束的气动弹性优化技术,并以大展弦比复合材料机翼为对象,进行气动弹性综合优化设计。研究表明,机翼气动弹性优化中若不考虑稳定性约束条件,虽然可以获得较小结构重量,但往往不满足稳定性要求;相比从有限元角度考虑结构失稳特征的气动弹性综合优化设计方法,通过工程数学方法对机翼结构进行分区失稳分析优化可以更加精准地控制变量,在满足各项性能指标,特别是稳定性约束的同时,进一步减轻了结构重量,提高了结构失稳因子。

关键词: 气动弹性, 结构优化, 失稳分析, 复合材料

Abstract: Based on engineering mathematical solution and finite element analysis, the aeroelastic optimization technology is developed with consideration of both the wall stability constraints and the aeroelastic constraints. The aeroelastic comprehensive optimization design is carried out for a large aspect ratio composite wing. It is shown that if the stability constraints are not considered in the aeroelastic optimization of the wing, although a smaller structural weight can be achieved, the stability requirements are often not satisfied. Compared with the aeroelastic comprehensive optimization design method with consideration of the structural instability characteristics by the finite element, the optimization with the partition instability analysis of the wing structure by engineering mathematical solutions can control the variables more accurately, further reduce the structural weight and improve the structural instability factor while satisfying various performance requirements, especially, the stability constraints.

Key words: aeroelastic, structural optimization, instability analysis, composite

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