大展弦比机翼的非线性气弹响应分析  

Analysis of the nonlinear aeroelastic response for large-aspect-ratio wing

作　　者：冉玉国[1,2] 刘会[3] 张金梅[3] 韩景龙[2] 

机构地区：[1]成都飞机设计研究所,四川成都610041 [2]南京航空航天大学航空宇航学院,江苏南京210016 [3]四川建筑职业技术学院,四川德阳618000

出　　处：《空气动力学学报》2009年第4期394-399,共6页Acta Aerodynamica Sinica

基　　金：国家自然科学基金资助项目(编号:10272056)

摘　　要：高空长航时飞行器将在未来军事与民用领域具有广阔的应用前景,这类飞行器具有大展弦比、大柔度机翼,在对该类型结构的气弹响应分析中,必须要考虑机翼的非线性因素。目前,对大型的工程结构MSC.NAS-TRAN提供了线性颤振、线性气弹的计算功能,但无法进行非线性结构的气弹响应分析。本文在非线性运动方程中引入ONERA气动力的线性项,利用DMAP语言在NASTRAN非线性瞬态响应分析程序中加入相关气动力模块,实现了大型有限元机翼的非线性气弹响应分析。文中给出了算例,结果验证了该法分析大展弦比机翼结构气弹响应的有效性,具有重要的工程应用价值。The High-Altitude-Long-Range aircraft shall be used popularly in both civil and military field,which has large-aspect-ratio and large-flexible wing. The nonlinear factors must be consiclerecl when analyzing the aeroelastic response of this type of structures. At present, MSC/NASTRAN only supplies the functions of analyzing linear flutter and linear aeroelastic response for large engineering structures, which can not be used to analyze the aeroelastic response of the nonlinear structure directly. In this paper, the linear item of the ONERA aerodynamic model is introduced into the nonlinear equation of motion, and then the corresponding aerodynamic modules are inserted into the NASTRAN nonlinear transient response solution sequence with DMAP language, which results in the function of analyzing the nonlinear aeroelastic response of the large FEM wing. The examples are cited in this paper, and the results verify the validation of this method in analyzing the nonlinear aeroelastic response of LAR wing. The method used in this paper is very useful to engineering application.

关 键 词：大展弦比机翼 非线性气弹响应 DMAP NASTRAN ONERA气动力 

分 类 号：V211.47[航空宇航科学与技术—航空宇航推进理论与工程]