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高DN值滚子轴承保持架断裂分析

刘鲁 霍帅 郑凯

刘鲁, 霍帅, 郑凯. 高DN值滚子轴承保持架断裂分析[J]. 航空动力学报, 2020, 35(10): 2115-2122. doi: 10.13224/j.cnki.jasp.2020.10.011
引用本文: 刘鲁, 霍帅, 郑凯. 高DN值滚子轴承保持架断裂分析[J]. 航空动力学报, 2020, 35(10): 2115-2122. doi: 10.13224/j.cnki.jasp.2020.10.011
LIU Lu, HUO Shuai, ZHENG Kai. Analysis of roller bearing cage broken under high DN value[J]. Journal of Aerospace Power, 2020, 35(10): 2115-2122. doi: 10.13224/j.cnki.jasp.2020.10.011
Citation: LIU Lu, HUO Shuai, ZHENG Kai. Analysis of roller bearing cage broken under high DN value[J]. Journal of Aerospace Power, 2020, 35(10): 2115-2122. doi: 10.13224/j.cnki.jasp.2020.10.011

高DN值滚子轴承保持架断裂分析

doi: 10.13224/j.cnki.jasp.2020.10.011

Analysis of roller bearing cage broken under high DN value

  • 摘要: 对高DN值(轴承内径与转速的乘积)滚子轴承保持架断裂的故障机理进行仿真,采用超高周疲劳理论对仿真结果进行分析,结果表明:以往基于高周疲劳概念的保持架设计方法不适用于高DN值轴承保持架,超长寿命期内造成断裂所需的应力远低于材料的疲劳极限。造成高DN值滚子轴承保持架断裂的主要应力来自高转速带来的离心应力,而兜孔圆角过小导致应力集中过大是造成轴承保持架断裂主要原因,因此增大保持架兜孔圆角或清根能够降低局部应力集中,有利于防止保持架的断裂,提高轴承的可靠性。

     

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出版历程
  • 收稿日期:  2019-11-08
  • 刊出日期:  2020-10-28

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