考虑刚柔耦合效应的风力机叶片动力学分析
Dynamic Analysis of Wind Turbine Blade with the Rigid-Flexible Coupling Effect
摘要: 为了研究风力机叶片的固有频率以及随风动力响应，本文采用了刚–柔耦合中的零次近似模型，并考虑了离心刚化效应，推导了叶片在旋转时的动力学方程。并给出了叶片的刚度和质量矩阵的表达式。研究了某风力机叶片在不同模型下的固有频率以及随风振动响应。研究表明，刚柔耦合效应对叶片的面内刚度具有弱化作用，而对面外刚度无影响。而离心刚化效应则增强了叶片的面内外刚度。研究结果对风力叶片的动力学设计具有一定参考价值。
Abstract: To analyze the vibrational frequencies and dynamic response of wind turbine blade with wind loads, the zeroth-order approximation model was adopted and the centrifugal stiffening effect was included to derive the dynamic equation of the rotating blade. The formula of stiffness matrix and mass matrix was given in the paper. Finally, the vibrational frequency and wind-induced response of a blade were calculated. The results show that the rigid-flexible coupling effect has few effects on the out-plane stiffness of blade. The in-plane stiffness of blade, however, was affected by this effect. The centrifugal stiffening effect both strengthened the in-plane and out-plane stiffness of blade. The results of the paper have some reference value to the dynamic design of wind turbine blades.
文章引用：高凯强, 张志强. 考虑刚柔耦合效应的风力机叶片动力学分析[J]. 土木工程, 2018, 7(2): 205-213. https://doi.org/10.12677/HJCE.2018.72025

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