摘要
风电叶片模态参数识别在结构试验中至关重要,以aeroblade1.5-51.2风电叶片最小面向为例。首先将风电叶片沿展向离散化得到自由振动方程,采用数值模拟方法得到其低阶固有频率及振型。然后搭建了一套大型风电叶片模态测试平台,沿着叶片展向布置多个测点,通过锤击法进行激振试验,试验结果与数值模拟结果的误差小于5%,验证了数值模拟方法用于大型风电叶片模态测试的可行性。
Modal parameter identification of wind turbine blade is very important in structural test, taking aeroblade1.5-51.2 wind turbine blade as an example. The free vibration equations are obtained by discretization of wind turbine blades along the spanwise direction, and the low order natural frequencies and modes are obtained by numerical simulation. Then a large scale wind turbine blade modal test platform is set up, and several measuring points are arranged along the blade span, and the excitation test is carried out by hammering method. The error between the experimental results and the numerical simulation results is less than five, which verifies the feasibility of the numerical simulation method applied to the modal test of large wind turbine blades.
作者
任建
冯忠彬
Ren Jian;Feng Zhongbin(Shandong Institute of Yellow River Metrology,Jinan Shandong 250100)
出处
《现代工业经济和信息化》
2018年第11期88-90,共3页
Modern Industrial Economy and Informationization
关键词
风电叶片
模态测试
数值模拟
低阶固有频率
测试平台
wind turbine blade
modal test
numerical simulation
low order natural frequeney
test platform
