基于多因素的风电主轴轴承疲劳寿命分析  

Analysis on Fatigue Life of Main Shaft Bearings in Wind Turbines Based on Multiple Factors

作　　者：牛宝禛 李伦[1,2] 李济顺[1,2] 金喜洋 练松伟 NIU Baozhen;LI Lun;LI Jishun;JIN Xiyang;LIAN Songwei(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471023,China;Henan Key Laboratory for Machinery Design and Transmission System,Luoyang 471023,China;Luoyang LYC Bearing Co.,Ltd.,Luoyang 471039,China;State Key Laboratory of Aviation Precision Bearings,Luoyang 471039,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471023 [2]河南省机械设计及传动系统重点实验室,河南洛阳471023 [3]洛阳LYC轴承有限公司,河南洛阳471039 [4]航空精密轴承国家重点实验室,河南洛阳471039

出　　处：《轴承》2022年第8期9-14,18,共7页Bearing

基　　金：国家重点研发计划资助项目(2019YFB2005001)。

摘　　要：以4.5 MW风电机组主轴固定端轴承为研究对象,基于ISO 281:2007标准和Palmgren-Miner线性损伤累积理论建立疲劳寿命理论计算模型,将其疲劳寿命计算结果与Romax仿真模型对比可知,ISO 281:2007标准修正算法及Romax仿真模型更接近实际工况。并分析了载荷、转速、润滑脂污染程度对固定端轴承疲劳寿命的影响,结果表明:轴承疲劳寿命随载荷增大快速下降,随转速增大先增大后减小,随润滑脂污染系数增大而增大。Taking fixed end bearings for main shaft in 4.5 MW wind turbines as research objects, the theoretical calculation model of fatigue life is established based on ISO 281:2007 and Palmgren-Miner linear damage accumulation theory, the fatigue life calculation results are compared with Romax simulation model, ISO 281:2007 modified algorithm and Romax simulation model are closer to actual operating conditions. The effects of load, rotational speed and grease contamination degree on fatigue life of fixed end bearings are analyzed. The results show that the fatigue life of the bearings decreases rapidly with increase of load, increases first and then decreases with increase of rotating speed, and increases with increase of grease contamination factor.

关 键 词：滚动轴承 风力发电机组 调心滚子轴承 疲劳寿命 载荷 转速 润滑脂 污染系数 

分 类 号：TH133.332[机械工程—机械制造及自动化] U467.497[机械工程—车辆工程]