摘要
通过风剪切和脉动风谱程序建立了模拟工况的风场,以某大型风力机实体模型作为研究对象,运用有限元软件ANSYS数值模拟了流固耦合作用下风力机结构动态响应。结果表明:与脉动风相比,风剪切对叶片的最大位移和应力影响更显著;叶轮与塔架耦合作用会显著增大叶片最大位移和应力响应值;考虑耦合作用后叶片最大应力由相对翼展0.5处移动到0.7处。该研究结果可为风力机的优化设计提供技术参考。
The simulated working wind filed was established by using the wind shear and wind spectrum Taking the large wind turbine as the research object, the dynamic response of the wind turbine was calculated by ANSYS on the basis of fluid- structure interaction analysis method. The results indicate that wind shear has a more significant influence on the maximum displacement and stress of the blade than fluctuating wind; owing to the effect of the interaction between blades and tower, the maximum displacement and stress of the blade increase to a certain extent and the maximum stress of the blade changes its location from relative span 0.5 to 0.7. It provides technical references for optimization design of the wind turbine.
出处
《机械设计与制造》
北大核心
2016年第10期90-93,共4页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(60801056)
上海市青年科技启明星计划基金资助项目(11QA1402800)
上海教委科研创新重点项目基金资助项目(11ZZ170)
关键词
塔架-叶片耦合模型
风剪切
脉动风
流固耦合
动态响应
Wind Turbine Tower-Rotor Coupled System
Wind Shear^luctuating Wind
Fluid-Structure Interaction
Dynamic Response
