Fatigue Simulation and Analysis on Planetary Gear of Megawatt Wind Power Yaw Reducer
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摘要:
针对兆瓦级风电偏航减速机的运行工况，采用Pro/E对新型风电偏航减速机进行了虚拟装配，利用Pro/E与ANSYS之间的接口技术建立了新型风电偏航减速机行星齿轮接触模型，模拟行星齿轮运转过程中的接触应力变化.结果表明：行星齿轮初始啮合最大接触应力为395 MPa，啮合过程最大应力为460 MPa，但仍小于行星齿轮材料的屈服极限.通过对兆瓦级风电偏航驱动减速机行星齿轮疲劳载荷和42CrMo材料的 S -N 曲线分析，结果显示齿轮轮齿的疲劳寿命为125 800次，累计疲劳系数为0.725 01，能满足兆瓦级风电偏航减速机行星齿轮设计与运行要求.
Abstract:
The new type wind power yaw reducer was virtually assembled in Pro/E for the operating conditions of the MW wind power yaw reducer. The planetary gear contact model of the new type wind power yaw reducer was built to simulate the change of the contact stress in the process of planetary gear operation with the interface of Pro/E and ANSYS. The results show that the initial maximum contact stress of the meshing planetary gear is 395 MPa and the maximum stress in the engagement process is 460 MPa, but it is still less than the material yield limit of the planetary gear. The results also show that the fatigue life of the gear teeth is 125 800 times, the cumulative fatigue factor is 0.725 01 by analyzing the fatigue loads and 42CrMo’s S -N curve of MW wind power yaw drive planetary gear, so it can meet the design and operation requirements for the MW wind power yaw reducer.
