气弹耦合作用下旋转对海上风力机叶片振动特性的影响  

The Influence of Rotation on Vibration Characteristics for Offshore Wind Turbine Blades under Aeroelastic Coupling

作　　者：张建平[1] 施锋锋 韩熠[1] 

机构地区：[1]上海电力学院能源与机械工程学院,上海200090

出　　处：《机械设计与制造》2016年第7期239-242,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(11572187);上海市优秀学科带头人计划(B类)项目(13XD1425200);上海市教育委员会科研创新项目(14ZZ154);上海市科委部分地方院校能力建设项目(13160501000);上海市科学技术委员会项目(11dz2281700;14DZ2261000)

摘　　要：针对大型风力机叶片,采用UG软件完成了叶片的实体建模,利用ANSYS开展了气弹耦合作用下旋转叶片振动特性的模拟和分析。结果表明:旋转不但显著增加了叶片位移和应力响应峰值,而且加剧了响应曲线的波动,旋转效应的贡献先减小后增大且随来流风速的增加呈现相同的变化;随着转速或来流风速的增加,叶片最大位移及其增幅沿翼展方向均呈非线性增长趋势,叶片根部和中部应力峰值的增幅均较为明显。结果可为风力机叶片优化设计提供技术参考。For large-scale offshore wind turbine blades, the entity model was built by UG software, and the simulation and the analysis of vibration characteristics for rotating blades under the action of aeroelastic coupling were carried out by ANSYS. The results indicate that rotation not only significantly increases the peak value of the displacement and stress response for the blades, but also increases the fluctuation of the response curves. Furthermore, the contribution of the rotation effect first decreases and then increases, and it shows the same change with the increase of wind speed. As the rotating speed or the flow wind speed increases, the blade maximum displacement and its increased amplitude both present a non-linear increasing trend along the span direction, and the increase of the stress peak value located at the root and in the middle of the blade is both more obvious. The results can provide the technical reference for the optimization design of wind turbine blades.

关 键 词：气弹耦合作用 旋转效应 来流风速 风力机叶片 振动特性 

分 类 号：TH16[机械工程—机械制造及自动化] TK83[动力工程及工程热物理—流体机械及工程]