小型风力机新翼型叶片动态结构响应研究  

RESEARCH OF DYNAMIC STRUCTURE RESPONSE OF SMALL WIND TURBINE BLADES WITH NEW AIRFOILS

作　　者：郭俊凯 郭志文 张建伟 汪建文[1,2] 赵爽 云萌[1] Guojunkai;Guo Zhiwen;Zhang Jianwei;Wang Jianwen;Zhao Shuang;Yun Meng(College of Energy and Power Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;Key Laboratory of Wind Energy and Solar Energy Utilization Mechanism and Optimization of Inner Mongolia Autonomous Region,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]内蒙古自治区风能太阳能利用机理及优化重点实验室,呼和浩特010051

出　　处：《太阳能学报》2021年第10期183-188,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51766014);内蒙古自然科学基金重大项目(2016ZD04)。

摘　　要：以小型风力机加厚翼型叶片为研究对象,建立风力机模型,然后利用ANSYS进行有限元分析,并通过试验测量,确定叶片物性参数结果进行对比分析。结果表明:数值模拟与试验结果变化趋势相同;风力机叶片的应力主要集中在叶片的叶根和中部的位置,且根部的应力最大,叶尖应力与中部相比较小,前缘部分应力与后缘部分相比较大;模态分析误差小于6%,载荷增加会导致叶片各阶动态固有频率上升,同时其挥舞振型对应的固有频率受载荷影响较大;屈曲分析时后缘从中部到叶尖段会出现最大位移区域,需进行加固处理增加后缘的结构强度。Aiming at the thickened blade of small wind turbine,a small wind turbine model is established and analyzed by finite element method based on ANSYS.The physical parameters of leaf blade are compared with the experiment results.The results indicate that the numerical simulation results has the same trend with the experimental results.Wind turbine blade stress concentrates mainly on roots and the central position of the blade,the stress value of blade root is maximum and near the tip of blade is smaller than in the central and the stress value of the front part is bigger than in rear part.The error of modal analysis is less than 6%.The blade load increase will lead to the increase of the dynamic natural frequencies of the blade.Meanwhile,the flapwise vibration corresponding to the natural frequency is greatly influenced by load.In buckling analysis,the maximum displacement area of trailing edge will appear from middle part to tip of the blade,so the structural strength of the trailing edge need be increased by reinforcement treatment.

关 键 词：风力机 动态响应 数值模拟 叶片 加厚翼型 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]