国外文献 > 1.轴承 > 2. 轴承类型与部件 > 核心部件
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| 标 题： |
Analysis of an Angular Contact Ball Bearing Failure and Strategies for Failure Prevention
角接触球轴承失效分析及预防策略 |
| 作 者： |
V. Murugesan
P. S. Sreejith
P. B. Sundaresan
V. Ramasubramanian |
| 关键词： |
Angular contact ball bearing [角接触球轴承]
Rotor [ 转子]
Failure modes [ 失效模式]
Interference fit [ 干涉配合]
Preload [ 预加载]
Fillet radius [ 倒角半径]
Misalignment [ 错位] |
| 出版年： |
2018 |
| 期刊名： |
Journal of Failure Analysis and Prevention
失效分析与预防杂志 |
| 年卷期： |
2018, vol.18, no.3 |
| 摘 要： |
Bearing failures are one of the most common failure modes in the rotating machinery and equipment. Angular contact ball bearings are widely used considering their ability to carry the loads in both axial and radial directions, durability and low friction. The smooth functioning of these bearings greatly depends on the bearing load rating, material, type of fit with which it is assembled, the operating temperature and proper installation in the assembly. This paper presents the analysis of a failure of an angular contact ball bearing used in the gas motor system of an electrohydraulic control actuator used for launch vehicle attitude control. Detailed investigation of the failure is carried out by thermal and structural modeling of the bearing assembly, and the failure cause is identified as the combination of design error, hardware deviations and improper assembly operation which led to bearing misalignment and very high loading of the first row of balls resulting in excessive heating. The failure theory explains all the observations on the parts of the failed bearing. The physics of failure is understood, corrective actions to avoid the failure are addressed, and the strategies for prevention of similar failures are evolved.
轴承失效是旋转机械和设备中最常见的失效模式之一。由于角接触球轴承具有承受轴向和径向载荷的能力、良好的耐久性以及低摩擦特性，因此被广泛使用。这些轴承的正常运行在很大程度上取决于其载荷等级、材料、装配时的配合类型、工作温度以及安装的正确性。本文对用于运载火箭姿态控制电液执行器气体马达系统的角接触球轴承发生失效的情况进行了分析。通过轴承组件的热力与结构建模，对失效过程进行了详细调查，最终确定失效原因是设计缺陷、硬件偏差以及装配操作不当的综合作用，导致轴承偏心以及第一排滚珠承受过大的载荷，从而引发严重过热。失效理论能够解释所观察到的失效部件的所有现象。了解失效的物理原理，采取纠正措施以避免失效，并制定防止类似失效的策略。 |
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