面向跨音速气动弹性剪裁的颤振时域自动化预估方法  

An automated aeroelastic performance prediction method in time domain for transonic aeroelastic tailoring

作　　者：李东风[1] 王怡星 陈刚[1] 李跃明[1] LI DongFeng;WANG YiXing;CHEN Gang;LI YueMing(Shaanxi Key Laboratory for Environment and Control of Flight Vehicle,State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace,Xi＇an Jiaotong University,Xi＇an 710049,China)

机构地区：[1]西安交通大学航天航空学院机械结构强度与振动国家重点实验室陕西省先进飞行器服役环境与控制重点实验室,西安710049

出　　处：《中国科学：物理学、力学、天文学》2018年第11期39-51,共13页Scientia Sinica Physica,Mechanica & Astronomica

基　　金：国家自然科学基金(编号:11672225;11272005);国家重点专项基金(编号:MJ-2015-F-010);陕西省自然科学基金(编号:2016JM1007);中央高校科研专项资金(编号:xjj2014135)资助项目

摘　　要：随着对燃油效率和先进气动、结构的关注,复合材料在飞行器结构设计中得到越来越多的应用.在复合材料气动弹性剪裁设计过程中,为了满足气动弹性要求,需要反复对复合材料结构参数进行修改,不可避免地需要重新构建气动弹性剪裁模型,气动弹性剪裁模型重建和气动弹性性能评估过程会耗费大量时间和人力,尤其在跨音速区域,这些都大大增加了飞行器设计的时间和人工成本.为了发展更高效复合材料机翼气动弹性剪裁方法,本文从提高气动弹性性能评估过程效率入手,基于结构动力重分析法提出了一种面向跨音速气动弹性剪裁的颤振时域自动化预估方法.采用改进Agard 445.6复合材料机翼为模型对本文所提出方法的有效性和精度进行了验证.仿真结果表明本文所提出的自动化气动弹性性能预估方法可以以较高的精度对气动弹性剪裁过程所必须的结构气动弹性响应进行预估,尤其可以避免大量的人工手动修改气动弹性模型的过程,这大大提高了跨音速复合材料机翼气动弹性剪裁自动化程度和设计效率.Due to fuel efficiency and advanced aerodynamic, structural concern, more and more composite materials used in aircraft desgin. In aeroelastic tailoring techniques, in order to meet the requirements of aeroelastic performance, the parameters of the composite structure need to be modified repeatedly, the aeroelastic tailoring have to be reconstructed. However, these reconstruction and aeroelastic performance evaluation procedures take a considerable time and labour, and greatly increasing the time cost of the aircraft design. To develop a more efficient composite wing aeroelastic tailoring method, starting with improving the efficiency of aeroelastic performance evaluation, this paper propose an automated aeroelastic performance evaluation method for aeroelastie tailoring by introducing the structural dynamic reanalysis method. The improved AGARD 445.6 composite wing was employed to verify the validity and accuracy of the proposed automated method. The results show that the proposed method can not only accurately predict the aeroelastic response of the structure, but also because avoid a large number of artificial modification, greatly improving the automation degree and efficiency of transonic composite structure aeroelastic tailoring.

关 键 词：气动弹性剪裁 自动化 结构动力重分析 跨音速 

分 类 号：V215.34[航空宇航科学与技术—航空宇航推进理论与工程]