The effect of structural geometric nonlinearities on the flutter of the straight and swept wing configurations

Guo Qing, Song Bifeng

科研成果: 书/报告/会议事项章节会议稿件同行评审

2 引用 (Scopus)

摘要

High altitude and long endurance (HALE) vehicle always adopt straight or swept configuration, which leads to the problem that the wings of UAV have high aspect ratio and are very flexible. This kind of flexible wing exhibits large deformation when aerodynamic forces are loaded on them and the structural nonlinearity should be considered. So the dynamic and flutter characteristics will be changed. In the engineering applications, the effects of structural geometric nonlinearities on the air vehicle design are the most concerns of aeroelasticity before a systematic flutter analysis for the air vehicle. because the solution for nonlinear flutter speed based on the CFD-CSD method is complex and time consuming. In this paper, we propose a simple and efficient approach that can analyze the effect of structural geometric nonlinearities on the flutter characteristics of high aspect ratio wing quickly. And a straight wing and a straight-swept wing are analyzed to verify the feasibility and efficiency of the proposed method. It is found that the effect of structural geometric nonlinearities has a strong effect on the flutter characteristic of the straight wing, but is weak on the straight-swept wing. And finally the impact of swept angle on the dynamic and flutter characteristics of straight-swept wing is also discussed.

源语言英语
主期刊名Frontier in Information Engineering for Mechanics and Materials
306-311
页数6
DOI
出版状态已出版 - 2012
活动2012 International Conference on Information Engineering for Mechanics and Materials, ICIMM 2012 - Hangzhou, 中国
期限: 19 5月 201222 5月 2012

出版系列

姓名Applied Mechanics and Materials
189
ISSN(印刷版)1660-9336
ISSN(电子版)1662-7482

会议

会议2012 International Conference on Information Engineering for Mechanics and Materials, ICIMM 2012
国家/地区中国
Hangzhou
时期19/05/1222/05/12

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