涡旋压缩机滚动轴承疲劳寿命分析及可靠性研究
Fatigue Life Analysis and Reliability Study of Rolling Bearings in Scroll Compressor
DOI: 10.12677/mos.2024.132161, PDF,   
作者: 何伟兴, 卢 曦：上海理工大学机械工程学院，上海；卢 诚：上海海立新能源技术有限公司，上海
关键词: 滚动轴承；涡旋压缩机；疲劳寿命；可靠性；Rolling Bearing； Scroll Compressor； Fatigue Life； Reliability
摘要: 针对某电动汽车涡旋压缩机动盘轴承容易发生疲劳失效的问题，研究了不同转速、不同径向载荷以及两者相互匹配对其疲劳寿命的影响。对压缩机转子结构进行受力分析，计算动盘轴承在不同工况下受到的径向载荷。使用UG对动盘轴承进行建模，联合WORKBENCH/LS-DYNA和nCode Designlife对不同工况下的轴承进行疲劳仿真分析，得到轴承的应力分布、损伤情况和寿命分布。并针对不同工况进行台架试验以验证仿真结果的合理性。结果表明疲劳失效主要发生在轴承承载区滚子与内外圈滚道接触的位置，转速与径向载荷对动盘轴承疲劳寿命的影响并非简单的线性关系，且径向载荷的影响大于转速，仿真结果与试验结果平均绝对值误差为8.7%，大幅降低了动盘轴承疲劳寿命试验的时间成本，对涡旋压缩机使用寿命的研发具有一定的参考意义。
Abstract: Regarding the issue of fatigue failure in the bearings of a certain electric vehicle’s scroll compressor rotor, the effects of different rotational speeds, radial loads, and their matching on their fatigue life were studied. Perform force analysis on the compressor rotor structure and calculate the radial load on the rotating turbine bearing under different working conditions. Model the rotating turbine bearing using UG, combined with WORKBENCH/LS-DYNA and nCode Designlife for fatigue simulation analysis of bearings under different working conditions, to obtain the stress distribution, damage situation, and life distribution of the bearings. And conduct bench tests for different operating conditions to verify the rationality of the simulation results. The results indicate that fatigue failure occurs mainly in the bearing load area where the rollers are in contact with the raceways of the inner and outer rings. The influence of rotational speed and radial load on the fatigue life of the rotating turbine bearing is not a simple linear relationship, and the influence of radial load is greater than that of rotational speed. The average absolute error between simulation results and experimental results is 8.7%, which significantly reduces the time cost of fatigue life testing for rotating turbine bearings. The research and development of scroll compressor service life has certain reference significance.
文章引用：何伟兴, 卢曦, 卢诚. 涡旋压缩机滚动轴承疲劳寿命分析及可靠性研究[J]. 建模与仿真, 2024, 13(2): 1705-1716. https://doi.org/10.12677/mos.2024.132161

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