兆瓦级风电齿轮箱行星架疲劳强度分析

发布时间：2018-01-31 04:01

本文关键词： 风电齿轮箱行星架 S-N曲线疲劳载荷谱疲劳分析　出处：《机械传动》2017年11期 　论文类型：期刊论文

【摘要】：基于兆瓦级风电齿轮箱低速级行星架有限元分析模型,对行星架进行了疲劳损伤的研究。利用ANSYS—workbench与ANSYS经典联合仿真分析了风电齿轮箱低速级行星架的单位载荷下的应力情况;根据GL2010设计规范,得出风电齿轮箱低速级行星架部件材料的S-N拟合曲线;运用雨流循环计数法得到了行星架的疲劳载荷谱。最后,使用n Code/design life软件提出了一种将雨流循环计数法与Palmgren-Miner线性累积损伤理论和强度安全系数理论相结合的行星架疲劳强度校核的方法,得到风电齿轮箱低速级行星架的疲劳损伤和最低安全系数。分析结果表明,提出的方法是可靠实用的,为兆瓦级风电齿轮箱低速级行星架的疲劳寿命分析提供了一个更为准确的分析思路,具有一定的工程实用意义。
[Abstract]:Based on the finite element analysis model of low-speed planetary frame of megawatt wind power gearbox. The fatigue damage of the planetary frame is studied. The stress under the unit load of the low-speed planetary frame of the wind power gearbox is analyzed by ANSYS-workbench and ANSYS classical simulation. According to the GL2010 design specification, the S-N fitting curve of the components of the low-speed planetary frame of the wind power gearbox is obtained. The fatigue load spectrum of the planetary frame is obtained by using the rain flow cycle counting method. Finally. Using n Code/design. Life software proposed a new method for checking the fatigue strength of planetary frames which combines the rain flow cycle counting method with the Palmgren-Miner linear cumulative damage theory and the strength safety factor theory. The fatigue damage and the lowest safety factor of the low-speed planetary frame of the wind power gearbox are obtained. The analysis results show that the proposed method is reliable and practical. It provides a more accurate analysis idea for the fatigue life analysis of the low-speed planetary frame of the megawatt wind power gearbox, and has certain engineering practical significance.
【作者单位】：华北电力大学机械工程系;国电联合动力技术有限公司;风电设备及控制国家重点实验室;
【分类号】：TM315
【正文快照】： 0引言在兆瓦级风力发电机组齿轮箱中,低速级行星架主要承担着轮毂处传递过来转矩的作用,是风力发电机组中承受转矩最大的部件。目前,国内外许多作者针对风电发电机组的结构进行了疲劳分析。丁显等[1]应用Workbench和FE—safe5.4软件组合对行星架进行疲劳寿命分析,得到行星架的

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