全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
工程力学  2015 

风力机叶片挥舞摆振气弹失稳分析

DOI: 10.6052/j.issn.1000-4750.2014.05.0359, PP. 236-242

Keywords: 风力机,振型叠加法,挥舞摆振,气动稳定性,抗风设计

Full-Text   Cite this paper   Add to My Lib

Abstract:

为避免风机叶片在强风作用下发生破坏,需对其采取停机保护措施。该文研究叶片处于非旋转状态时的挥舞摆振气弹失稳现象发生的条件。基于风力机叶片简化模型,采用迭代法求解叶片的自振频率及振型,建立了非旋转叶片挥舞摆振气弹效应响应的振型叠加法,该方法可以便捷地进行叶片多工况气动弹性响应分析。计算了在不同风速不同攻角条件下叶片的挥舞摆振气弹效应响应,得到了叶片挥舞摆振响应随风速和风攻角的变化规律以及不稳定风攻角的分布特征。结果表明:在某些风攻角下,风机叶片挥舞摆振失稳现象在风速较低的情况就有可能发生,其响应幅值与结构阻尼联系紧密。另外,挥舞摆振失稳会大大增加作用于叶片上的风荷载,并进一步造成叶片结构的损伤破坏。

References

[1]  王力雨, 许移庆. 台风对风电场破坏及台风特性初探[J]. 风能, 2012, 27(5): 74―79. Wang Liyu, Xu Yiqing. Discover of typhoon damage to wind farm and it’s characteristics [J]. Wind Energy, 2012, 27(5): 74―79. (in Chinese)
[2]  Ishihara T, Yamaguchi A, Takahara K, et al. An analysis of damaged wind turbines by typhoon Maemi in 2003 [C]. Korea: Proceedings of the Sixth Asia-Pacific Conference on Wind Engineering, 2005: 1413―1428.
[3]  Kikitsu H, Okuda Y, Okada H. High Wind Damage in Japan from Typhoon Maemi and Choi-wan on September 2003 [C]// Japan: Agenda 36th Joint Meeting Panel On Wind and Seismic Effects, Tsukuba City, 2004.
[4]  Friedmann P P. Aeroelastic modeling of large wind turbines [J]. Journal of the American Helicopter Society, 1976, 21(4): 17―27.
[5]  Kottapalli S, Friedmann P, Rosen A. Aeroelastic stability and response of horizontal axis wind turbine blades [J]. AIAA Journal, 1979, 17(12): 1381―1389.
[6]  Bauchau O A, Hong C. Finite element approach to rotor blade modeling [J]. Journal of the American Helicopter Society. 1987, 32(1): 60―67.
[7]  Hodges H D, Dowell E H. Nonlinear equations of motion for the elastic bending and torsion of twisted nonuniform rotor blades [R]. Washington DC: Technical Report, NASA TN D-7818, 1974.
[8]  李春, 叶舟, 高伟, 等. 近代陆海海风力机计算与仿真[M]. 上海: 上海科技技术出版社, 2012: 429―434. Li Chun, Ye Zhou, Gao Wei, et al. Method of modern inland and offshore wind turbine calculation and simulation [M]. Shanghai: Shanghai Science and Technology Press, 2012: 429―434. (in Chinese)
[9]  Kalles O E B S. Equations of motion for a rotor blade, including gravity, pitch action and rotor speed variations [J]. Wind Energy, 2007, 10(3): 209―230.
[10]  Larsen J W, Nielsen S O R R. Non-linear dynamics of wind turbine wings [J]. International Journal of Non-Linear Mechanics, 2006, 41(5): 629―643.
[11]  Larsen J W, Nielsen S O R R. Nonlinear parametric instability of wind turbine wings [J]. Journal of sound and vibration, 2007, 299(1): 64―82.
[12]  Hansen M O. Aerodynamics of wind turbines [M]. New York: Routledge, 2013: 110―129.
[13]  Clough R W, Penzien J. Dynamics of structures [M]. Berkeley: Computers & Structures, 1995: 121―122.
[14]  吴金城, 张容焱, 张秀芝. 海上风电机的抗台风设计[J]. 中国工程科学, 2010, 12(11): 25―31. Wu Jingcheng, Zhang Rongyan, Zhang Xiuzhi. Design of offshore wind turbines for typhoon resistant [J]. China Engineering Science, 2010, 12(11): 25―31. (in Chinese)
[15]  宋丽莉, 毛慧琴, 钱光明, 等. 热带气旋对风力发电的影响分析[J]. 太阳能学报, 2006, 27(9): 961―965. Song Lili, Mao Huiqin, Qian Guangming, et al. Analysis of tropical cyclones impact on wind power [J]. Journal of Solar Energy, 2006, 27(9): 961―965. (in Chinese)

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133