摘要
利用ANSYS软件的复合材料模块建立某5WM水平轴风力机叶片的铺层模型,通过静力分析和模态分析研究了风切变效应对叶片结构特性的影响。采用Fluent软件对风力机叶片在有无风切变來流的情况下进行数值模拟,将数值模拟所获得的载荷加载到叶片铺层结构上,研究风切变效应对风力机叶片结构特性是否产生影响。结果显示:风切变效应使來流风速的均值减小,从而导致所获载荷降低,使叶片的最大应力和最大位移减小;当有预应力干扰时,叶片的模态频率和叶尖变形量都明显提高,这会对叶片的结构特性产生影响。
A 5WM horizontal-axis wind turbine blade layup model is established by using ANSYS composite module.The influences of wind shear effect on blade structural characteristics are studied by static analysis and modal analysis.Using Fluent software,the three-dimensional numerical simulation of the wind turbine blade with or without wind shear effect is carried out to obtain the load distribution on the blade surface.The load is applied to the blade structure to study the influence of wind shear effect on the structural characteristics of the rotor blade at the rated wind speed.The results show that the wind shear effect reduces the mean of the incoming wind speed,resulting in a decrease in the load and a decrease in the maximum stress and maximum displacement of the blade.When the prestressing force is applied,the modal frequency and tip deformation of the blade are obviously improved,which has an influence on the structural characteristics of the blade.
作者
杨瑞
全佩
张康康
YANG Rui;QUAN Pei;ZHANG Kang-kang(College of Energy and Power Engineering,Lanzhou University of Technology,Gansu Lanzhou 730050,China)
出处
《机械设计与制造》
北大核心
2021年第5期172-175,共4页
Machinery Design & Manufacture
基金
甘肃省科技重大专项计划(17ZD2GA006)
国家国际科技合作专项项目(2014DFR60990)。
关键词
风切变
风力机
静力分析
模态分析
Wind Shear
Wind Turbine
Static Analysis
Modal Analysis
