|
|
论文:2013,Vol:31,Issue(5):810-815 |
|
|
引用本文: |
|
|
胡巍, 杨智春, 谷迎松. 带操纵面机翼气动弹性地面试验仿真系统中的气动力降阶方法[J]. 西北工业大学 |
|
|
Hu Wei, Yang Zhichun, Gu Yingsong. A New and Effective Method for Reducing Order of Aerodynamics of a Wing with Control Surface for Ground Flutter Test[J]. Northwestern polytechnical university |
|
|
|
|
|
|
|
带操纵面机翼气动弹性地面试验仿真系统中的气动力降阶方法 |
|
胡巍, 杨智春, 谷迎松 |
|
西北工业大学 航空学院, 陕西 西安 710072 |
摘要: |
对带操纵面三元机翼的地面颤振试验中非定常气动力降阶模型进行了研究,提出了一种气动力模型的二次降阶方法。该方法采用对气动力先进行频域降阶、再时域拟合的方法,分别确定主翼面、操纵面上激振点和拾振点的位置,从而获得气动力降阶模型。为进一步减少操纵面上所需激振点的个数,提出了以操纵面气动力、铰链力矩等效为前提,气动力降阶前后对应结构的动态气动弹性响应差异最小为目标函数,采用遗传算法进行激振点位置优化的方法。结果表明,对带操纵面三元机翼,采用文中提出的气动力二次降阶方法,可以有效地减少操纵面上激振点的个数,进而降低激振器控制系统的设计难度。 |
关键词:
颤振试验
地面模拟
气动弹性
带操纵面机翼
非定常气动力降阶
|
|
A New and Effective Method for Reducing Order of Aerodynamics of a Wing with Control Surface for Ground Flutter Test |
|
Hu Wei, Yang Zhichun, Gu Yingsong |
|
College of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, China |
Abstract: |
A new experimental technique,named ground flutter test,is proposed recently to determine the critical flutter speed without a wind tunnel. In this technique,the reduced order model(ROM) of unsteady aerodynamics is numerically simulated,the aircraft structure being exerted on by several electromagnetic shakers in real-time.We,aiming at the ground flutter test for aircraft wing with control surface,present a new approach,called secondary reduced order model(SROM),to obtain a reduced order model of unsteady aerodynamics in frequency-domain,by which measuring/ exciting points on the main surface and the control surface are obtained and then the reduced order model of frequency aerodynamics is transformed into that of time-domain. To minimize the number of exciting points on the control surface,a secondary model reduction is implemented based on the principle of force equivalence for the control surface and the minimum difference of aeroelastic response of wing structure. Results and their analysis show preliminarily that the presented SROM approach can improve the efficiency of generating the ROM of aerodynamics in time-domain and decrease the number of exciting points on the control surface,thus reducing the design difficulty of the control system of shakers. |
Key words:
aeroelasticity
computer simulation
control
control surfaces
efficiency
experiments
flutter (aerodynamics)
mathematical models
optimization
wings
flutter test
ground simulation
reduced order model (ROM)
|
|
收稿日期: 2012-11-13
修回日期:
|
DOI: |
基金项目: 国家自然科学基金(11972198);111计划(B07050)资助 |
通讯作者:
Email: |
作者简介: 胡巍(1988-),西北工业大学博士研究生,主要从事气动弹性研究。
|
|
相关功能 |
|
|
|
作者相关文章 |
|
胡巍 在本刊中的所有文章 |
杨智春 在本刊中的所有文章 |
谷迎松 在本刊中的所有文章 |
|
|
|
|
|
|
|
|
参考文献: |
|
|
[1] Kearns J P.Flutter Simulation.AD650981, 1967 [2] 潘树祥, 齐丕骞.地面模拟热颤振试验研究.强度与环境, 1984, 10-14 Pan Shuxiang, Qi Piqian.Studies on Ground Thermo-Flutter Simulation Test.Structure and Environment Engineering, 1984,10-14 (in Chinese) [3] Jie Zeng, Dallas W Kingsbury, Erich Ritz, et al.GVT-Based Ground Flutter Test without Wind Tunnel.AIAA-2011-1942 [4] Wu Zhigang, Chu Longfei, Yuan Ruizhi, Yang Chao, Tang Changhong.Studies on Aeroservoelasticity Semi-Physical Simulation Test for Missiles.Science China Technological Sciences, 2012, 55(9): 2482-2488 [5] Rodden W P, Giesing J P, Kalman T P.Refinement of the Nonplanar Aspects of the Subsonic Doublet-Lattice Lifting Surface Method.Journal of Aircraft, 1972, 9(1): 69-73 [6] Chen P C, Lee H W, Liu D D.Unsteady Subsonic Aerodynamics for Bodies and Wings with External Stores including Wake Effort.Journal of Aircraft, 1993, 30(5): 618-628 [7] Chen P C, Liu D D.Unsteady Supersonic Computation of Arbitrary Wing-Body Configurations including External Stores.Journal of Aircraft, 1990, 27(2): 108-116 [8] Karpel M.Procedures and Models for Aeroservoelastic Analysis and Design.Journal of Applied Mathematics and Mechanics,2001, 81: 579-592 |
|
|
|
|
|
|
|