Dynamic Response Analysis of Large Wind Turbine Blade Based on Davenport Wind Speed Model

Abstract:

Fluctuating wind speed spectrum, which is closer to the actual working conditions, was simulated by davenport wind speed model, and displacement and stress distribution of blade under fluctuating wind speed were calculated by finite element analysis software. The numerical results indicate that the growth trend of vibration amplitude for whole blade at flapping direction is nonlinear along the wingspan. The max von-mises stress appears when the vibration amplitude of tip reaches the maximum, and it is mainly concentrated in the central part of the blade. The stress at trailing edge and tip is smaller than the central part. Above results provide a reference for the strength safety design of wind turbine blade.,Fluctuating wind speed spectrum, which is closer to the actual working conditions, was simulated by davenport wind speed model, and displacement and stress distribution of blade under fluctuating wind speed were calculated by finite element analysis software. The numerical results indicate that the growth trend of vibration amplitude for whole blade at flapping direction is nonlinear along the wingspan. The max von-mises stress appears when the vibration amplitude of tip reaches the maximum, and it is mainly concentrated in the central part of the blade. The stress at trailing edge and tip is smaller than the central part. Above results provide a reference for the strength safety design of wind turbine blade.

• Periodical: Advanced Materials Research (Volumes 347-353)
• Pages: 2330-2336
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.347-353.2330
• Online since: October 2011
• Authors: Jian Ping Zhang, Dong Liang Li, Yu Liu, He Len Wu, Jian Xing Ren, Wei Guo Pan
• Keywords: Blade, Displacement, Fluctuating Wind Speed, Von Mises Stress

References

[1] Ming-Hung Hsu, "Dynamic behavior of wind turbine blades" , Mechanical Engineering Science, Vol. 222, 1453-1464, (2008)

[2] Fu Cheng, Wang Yanrong, "Dynamic Response Analysis of Wind Turbine Blade", Acta Energiae Solaris Sinica, Vol. 31, issue 7, 917-922, (2010)

[3] Zhao Na, LI Junxiang, LI Chengliang, "Model Analysis and Stability Analysis of Wind Turbine Blades Based on Ansys Modeling", Fiber Reinpressured Plastics/Composites, Vol. 6, 14-17, (2010)

[4] Hu Danmei, LI Jia, Yan Haijin, "Numerical Simulation of Airfoil Dynamic Stall of Horizontal Axis Wind Turbine", Proceedings of the CSEE, Vol. 30, issue 20, 106-111, (2010)

[5] He Yulin, Li Haifeng, Jin Xin, "Aerodynamic Characteristics Model of Airfoils for Wind Turbine Blades", Mechanical Science and Technology for Aerospace Engineering, Vol. 29, issue 12, 1589-1594, (2010)

[6] Rui Yang, "Research of the rotational effects on the boundary layer of wind turbine blades", Modern Physics Letters B, Vol. 23, issue 3, 505-508, (2009)

DOI: 10.1142/s021798490901876x

[7] Zhou Pengzhan, Zeng Jingcheng, Xiao Jia-yu, "Stress character analysis on horizontal axis wind turbine blade", Renewable Energy Resources, Vol. 27, issue 5, 6-9, (2009)

[8] Wei Duan, Feng Zhao, "Loading analysis and strength cacluation of wind turbine blade based on blade element momentum theory and finite element method", Machinery Design & Manufacture, issue 8, 42-44, (2010)

DOI: 10.1109/appeec.2010.5448929

[9] He Dexin: Wind Engineering and Industrial Aerodynamics (National Defense Industry Press, CHINA 2006).

[10] Li Kun, "Dynamic Analysis on the Rotor of the Horizontal Axis Wind Turbine", Lanzhou University of Technology, 2008.

[11] Cheng Zhaoxue, Yang Congxin, LI Rennian, "A Numerical Method in Aerodynamic Computation for Wind Turbine Rotor", Mechanics in Engineering, Vol.29, issue 6, 44-47, (2007)

[12] Zhou Pengzhan, Xiao Jia-yu, Zeng Jingcheng, "Structural Analysis of Large-scale Composite Wind Turbine Blade Based on ANSYS", Journal of National University of Defense Technology, issue 2, 46-50, (2010)