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- 航空发动机高速滚珠轴承振动特性研究（英文）
- 作者： 唐云冰 章璟璇 施玲玲 谢小虎 来源： 风机技术 年份： 2023 文献类型 ： 期刊 关键词： Ball Vibration Aerospace Propulsion Passage Waviness System Bearing Surface
- 描述： Ball bearing is widely used as rotor supporting.It is a non/negligible source of vibration in aero/engines.The vibration characteristics of the highspeed ball bearing are studied in this paper.Bearing kinematics theory is applied to discuss the basic characteristics of ball bearings.The vibration factors caused by ball bearings are analyzed,and then the vibration model of ball bearings is set up.The effect of the unbalance,the ball passage vibration,the radial clearance and the surface waviness are considered.It is found that the ball passage vibration is excited by the contact force between the balls and the races.Increasing the numbers of ball can reduce the vibration amplitude.The surface waviness which is caused due to the geometric imperfection of ball bearings is considered as one of the important vibration sources of bearing systems.
- 航空发动机轴承内圈断裂失效机理分析
- 作者： 王全 李青 马健 韩振宇 来源： 风机技术 年份： 2022 文献类型 ： 期刊 关键词： 防转销 镀铬层 应力集中 轴承 疲劳
- 描述： 针对航空发动机轴承内圈断裂故障，利用视频显微镜、扫描电镜等设备，通过对故障轴承内圈、防转销等部件进行外观检查、断口分析、能谱分析及金相检查等分析工作，确定了轴承内圈断裂性质和产生原因。分析结果表明