Vibration Characteristics Analysis of Wind Turbine Towers under Foundation Conditions

Abstract:

Based on a kind of 1.5MW large-scale horizontal axis wind turbine tower, the mechanical modeling of a wind turbine tower-foundation is established, the static and dynamic analysis of the model is carried out by ANSYS software. The top displacement of the system is calculated by the static analysis to meet the design requirements in engineering. In dynamic analysis, each pile foundation is equivalent to a group of springs for the simulation of horizontal and vertical rigidity of the pile. The influence of top mass and foundation elasticity on wind turbine tower modes is analyzed, and calculated the natural frequency of the tower within a certain scope of rigidity in different directions about the piles foundation. The results show that the natural frequency of the wind turbine tower is influenced significantly by the mass on the tower top and foundation rigidity. The study provides a theoretical basis for optimal design of the wind turbine.

• Periodical: Applied Mechanics and Materials (Volumes 446-447)
• Pages: 721-727
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.446-447.721
• Online since: November 2013
• Authors: Xi Song, Yin Guang Wu, Jie Yu Li, Rong Zhen Zhao
• Keywords: ANSYS Simulation, Foundation, Natural Frequency, Wind Turbine Tower

References

[1] J.L. Si, G. Tu, F.Y. Shen, et al, Horizontal displacement calculation of the top of large-scale wind turbine tower, Energy Engineering. 134(2)(2009) 28-30.

[2] X. Song, J.X. Dai, Mechanical Modeling and ANSYS Simulation Analysis of Horizontal Axis Wind Turbine Tower, Journal of Gansu Science. 23(1)(2011)91-95.

[3] C.G. Gebhardt, S. Preidikman, J.C. Massa, Numerical simulations of the aerodynamic behavior of large horizontal-axis wind turbines, International Journal of Hydrogen Energy. 35(11)(2010)6005- 6011.

DOI: 10.1016/j.ijhydene.2009.12.089

[4] L.V. Binh,T. Ishihara P.V. Phuc, et al, A peak factor for non-Gaussian response analysis of wind turbine tower. Journal of Wind Engineering and Industrial Aerodynamics. 96(2008)2217-2227.

DOI: 10.1016/j.jweia.2008.02.019

[5] X. Liu,G. Q. Li,Y. Chen, et al, Dynamic response analysis of the turbine tower of horizontal axis wind turbines, Acta Energiae Solaris Sinica. 31(4)(2010) 412-417.

[6] J.J. Wang,G. Shi, Y,J. Shi, et al, Considering different boundary constraint condition of wind turbine tower under natural frequency analysis, Special Structures. 28(5)(2011)5-8.

[7] P.Y. Zhang, H.Y. Ding H.C. Le, et al, Test on the dynamic response of the offshore wind turbine structure with the large-scale bucket foundation, Procedia Environmental Sciences. 12Part B(2012) 856- 863.

DOI: 10.1016/j.proenv.2012.01.359

[8] S. Adhikari,S. Bhattacharya, Dynamic analysis of wind turbine towers on flexible foundations, Shock and Vibration. 19(1)(2012)37-56.

DOI: 10.1155/2012/408493

[9] M. Harte, B. Basu, S.R.K. Nielsen, Dynamic analysis of wind turbines including soil-structure interaction , Engineering Structures. 45(2012)509-518.

DOI: 10.1016/j.engstruct.2012.06.041

[10] G.L. He, Seismic response analysis of wind turbine tower systems considering soil-structure interaction, Journal of Mechanical Engineering. 45(7)(2009)87-94.

DOI: 10.3901/jme.2009.07.087

[11] A. Mohammad, H. Saif, Optimized frequency-based foundation design for wind turbine towers utilizing soil-structure interaction, Journal of The Franklin Insstiute. 348(7)(2011) 1470-1487.

DOI: 10.1016/j.jfranklin.2010.04.013

[12] Z.Y. Wang, B, Zhang, Z.H. Zhang, et al, Study on dynamic characteristics of the tower- foundation of 1. 5MW wind turbine, Energy Engineering. 2(2011)29-36.