Horizontal dual-point excitation and fatigue test of full-scale wind turbine blade

4th International Conference on Advanced Composite Materials and Manufacturing Engineering 2017

材料科学;化学

Pan, Zujin^1 ; Wu, Jianzhong^1 ; Zhao, Xinhua^3 ; Xie, Yan^2

School of Mechanical Engineering, Tongji University, Shanghai, China^1

Shanghai Aeolian Wind Energy Technology Development (Group) Co Ltd., Shanghai, China^2

Ningbo Intelligent Manufacturing Industry Research Institute, Ningbo, China^3

关键词: Dead weights;    Excitation characteristics;    Excitation theory;    Exciting forces;    Experimental methods;    Lagrange's equation;    Single point;    Wind turbine blades;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/207/1/012082/pdf
DOI  :  10.1088/1757-899X/207/1/012082

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In order to meet the requirements of large-blade fatigue testing, a horizontal dual-point linear exciter loading program is developed. In this paper, Lagrange's equation and FEM method are used to simulate the dual-point excitation theory model. The horizontal dual-point excitation characteristics of the blade are validated by the experimental method. The relationship among the dual-point exciting force, cycle time and bending moment during blade fatigue test in flap wise direction is studied. The advantages of horizontal dual-point excitation in blade fatigue test are analysed. Compared with vertical single-point excitation when the equal bending moment is reached, the exciting force and energy consumption required for dual-point excitation are reduced by 60.0% and 96.8%. Resonant frequency of the test system is improved by reducing the dead weight because of dual-point horizontal excitation. The entire blade fatigue test time is shortened by 7.4%. The use of horizontal dual-point excitation could save energy and shorten the entire fatigue test time.