大型风电机组偏航轴承动态性能研究  

Research of Dynamic Performance of Large- scale Wind Power Generator Yaw Bearing

作　　者：周楠[1,2] 赵荣珍[1,2] 郑玉巧[1,2] 

机构地区：[1]兰州理工大学机电工程学院,甘肃兰州730050 [2]兰州理工大学数字制造技术与应用省部共建教育部重点实验室,甘肃兰州730050

出　　处：《机械传动》2016年第1期64-67,109,共5页Journal of Mechanical Transmission

基　　金：国家自然科学基金(51165019)

摘　　要：以大型风电机组偏航轴承为研究对象,在ANSYS平台上建立了偏航轴承的有限元模型,综合考虑轴向载荷和倾覆力矩的耦合作用,分析了滚动体与滚道的静态接触应力,并给出赫兹理论解。将静力学分析结果作为瞬态动力学分析的初始条件,对水平轴式风电机组偏航轴承的运转过程进行模拟仿真,得到了偏航轴承运转过程中滚动体的动态响应、应力变化及滚道的动态米塞斯应力变化情况。分析结果可为偏航轴承的动态设计及选型提供参考依据。Taking the large- scale wind power generator yaw bearing as studying object,the finite element model of the yaw bearing is established on the ANSYS platform. Considering the axial load and overturning moment coupling action on it,the static contact stress of rollers and raceways are analyzed,and the Hertz theory solution is given. Using the result of static analysis as the initial conditions of transient dynamics analysis,the operation process for horizontal- axis wind turbine yaw bearings is simulated,the dynamic response of the rolling elements,stress change on the rolling elements and the Mises stress dynamics changes of raceway during operation process are obtained. The results can provide a reference for the design and selection of bearing dynamic yaw.

关 键 词：偏航轴承 动态响应 米塞斯应力 瞬态动力学 

分 类 号：TH133.3[机械工程—机械制造及自动化]