大型风力发电机复合材料叶片动态特性分析

Dynamical Analysis of Composite Blade for Large-scale Wind Turbine

以1.2 MW风力机叶片为研究对象,采用参数化建模技术建立大型风力机复合材料叶片的三维有限元壳模型,在此基础上采用拟波前子空间迭代法准确计算了基于多因素耦合作用下复合材料叶片的固有频率和振型。进而分析了不同形式的振动对旋转叶片的影响机理,该计算方法对大型复合材料风力机叶片的结构设计具有一定的参考价值。

It takes 1.2 MW wind turbine blades as the research object and adopts parametric modeling technology to create 3-D finite element shell model for composite blades of large-scale wind turbines,on this basis it introduces wavefront subspace iteration method for accurate calculation of natural frequencies and mode of vibration of the composite blades under multifactor coupling influence.Furthermore,it analyzes the mechanism in which the rotating blades are impacted by the different forms of vibrations.This calculation method presents certain valuable references in the structural design of composite blades for largescale wind turbines.