ANALYSIS OF KINETIC MECHANISM AND INFLUENCING FACTOR OF MODE LOCALIZAYION IN WIND TURBINE ROTOR

Guo Xin; Li Dongsheng; Jiang Tao

doi:10.19912/j.0254-0096.tynxb.2021-0269

PDF(1721 KB)

Acta Energiae Solaris Sinica ›› 2022, Vol. 43 ›› Issue (7) : 264-269. DOI: 10.19912/j.0254-0096.tynxb.2021-0269

ANALYSIS OF KINETIC MECHANISM AND INFLUENCING FACTOR OF MODE LOCALIZAYION IN WIND TURBINE ROTOR

Guo Xin¹, Li Dongsheng², Jiang Tao²

Author information +

History +

Abstract

This paper investigates the dynamical mechanism and influencing factors of mode localization in wind rotor due to the blade damage. Firstly, the dynamical mechanism of mode localization is revealed from the perspective of eigenvalue, and it is found that the essential cause of modal localization is the existence of closely spaced modes in structures. Then, the finite element model of NREL 5 MW wind turbine rotor is established, and the effects of blade mistuning, modal order, and mistuning position on the model localization of the wind turbine rotor are analyzed. Numerical simulation results indicate that damage mistuning of a single blade can cause significant variations in vibration modes of the wind turbine rotor, triggering mode localization. And the significance of the investigation is that the mode localization will aggravate the blade damage and potentially cause fatigue damage of the blade in some modes. Therefore, it is necessary to consider the effect of mode localization on the dynamic characteristics of wind turbines during wind turbine design.

Key words

wind turbines / wind rotor / mode localization / close modes / mistuning / finite element method

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Guo Xin, Li Dongsheng, Jiang Tao. ANALYSIS OF KINETIC MECHANISM AND INFLUENCING FACTOR OF MODE LOCALIZAYION IN WIND TURBINE ROTOR[J]. Acta Energiae Solaris Sinica. 2022, 43(7): 264-269 https://doi.org/10.19912/j.0254-0096.tynxb.2021-0269

References

[1] WEI S T, PIERRE C.Localization phenomena in mistuned assemblies with cyclic symmetry part II: Free vibrations[J]. Journal of vibration and acoustics, 1988, 110(4): 429-438.
[2] 胡超, 李凤明, 邹经湘, 等. 失谐叶片-轮盘结构振动模态局部化问题的研究[J]. 中国电机工程学报, 2003, 23(11): 189-194.
HU C, LI F M, ZHOU J X, et al.A study on localization of vibration mode in mistuned bladed disk assemblies[J]. Proceedings of the CSEE, 2003, 23(11): 189-194.
[3] ANDERSON P W.Absence of diffusion in certain random lattices[J]. Physical review, 1958, 109(5): 1492-1505.
[4] HODES C H.Confinement of vibration by structural irregularity[J]. Journal of sound and vibration, 1982, 82(3): 411-424.
[5] KAN X E, XU Z L, ZHAO B, et al.Effect of coriolis force on forced response magnification of intentionally mistuned bladed disk[J]. Journal of sound and vibration, 2017, 399: 124-136.
[6] SHAAT M. Mode localization phenomenon in microbeams due to surface roughness[J]. Applied physics, 2018: arXiv: 1803. 02638.
[7] 高阳, 姚建尧, 杨诚, 等. 小失谐对整体叶盘结构动态特性的影响[J]. 航空动力学报, 2018, 33(7): 1566-1574.
GAO Y, YAO J Y, YANG C, et,al. Influences of small mistuning on dynamic characteristics of blade disk[J]. Journal of aerospace power, 2018, 33(7): 1566-1574.
[8] 王朋朋, 王波, 郑士昆, 等. 含张力绳网伞状天线模态局部化研究[J]. 振动工程学报, 2020, 33(2): 231-236.
WANG P P, WANG B, ZHENG S K, et al.Mode localization in an umbrella antenna with tensile ropes[J]. Journal of vibration engineering, 2020, 33(2): 231-236.
[9] TCHERNIAK D.Rotor anisotropy as a blade damage indicator for wind turbine structural health monitoring systems[J]. Mechanical system and signal processing, 2016, 74: 183-198.
[10] LI D S, HO S C M, SONG G B, et al. A review of damage detection methods for wind turbine blades[J]. Smart materials and structures, 2015, 24(3): 1-24.
[11] 张永朋, 李东升, 郭鑫. 近海风机叶片模态局部化产生机理及定量分析研究[J]. 计算力学学报, 2020, 37(1): 53-61.
ZHANG Y P, LI D S, GUO X.Research on the mechanism and quantitative analysis of mode localization of offshore wind turbine blades[J]. Chinese journal of computational mechanics, 2020, 37(1): 53-61.
[12] WILKINSON J H.The algebraic eigenvalue problem[M]. Oxford: Clarendon Press, 1965: 62-70.
[13] 王红建. 复杂耦合失谐叶片—轮盘系统振动局部化问题研究[D]. 西安: 西北工业大学, 2006.
WANG H J.Investigation of the vibration localization problem of the mistuned bladed disk with complicated coupling[D]. Xi’an: Northwestern Polytechnical University, 2006.
[14] JONKMAN J, BUTTERFIELD S, MUSIAL W, et al.Definition of a 5-MW reference wind turbine for offshore system development[R]. NREL/TP-500-38060, 2009.
[15] RESOR B R.Definition of a 5MW/61.5m wind turbine blade reference model[R].Sand2013-2569, 2013.
[16] 张旭, 邢静忠. 叶片局部损伤对大型水平轴风力机静动态特性影响的仿真分析[J]. 工程力学, 2013, 30(2): 406-412.
ZHANG X, XING J Z.Simulation analysis on the effect of local damage of blade on static and dynamic characteristics for large horizontal axis wind turbine[J]. Engineering mechanics, 2013, 30(2): 406-412.