摘要
研究了航空发动机混合陶瓷轴承摩擦副Si_(3)N_(4)-GCr15的滑动磨失效机理。利用试验机进行了油润滑中的滑动磨损试验,并对摩擦副的表面磨损情况进行了微观表征。结果表明,油润滑中Si_(3)N_(4)-GCr15摩擦副的磨损失效机理为磨粒磨损、粘着磨损和疲劳磨损。混合参数Sdq可以准确反映Si_(3)N_(4)-GCr15摩擦副的微观形貌变化情况。利用ABAQUS2016软件模拟了摩擦副在磨损中的应力分布,发现当Si_(3)N_(4)球在循环应力的作用下与GCr15盘相互摩擦时,在人工凹坑的边缘区域出现了应力集中现象,加速了磨损进程。
The sliding wear failure mechanism of the Si_(3)N_(4)-GCr15 friction pair of aero-engine hybrid ceramic bearing was studied.The sliding wear test of oil lubrication was carried out by using the testing machine,and the surface wear of the friction pair was characterized by the microscope.The results show that the wear failure mechanisms of the Si_(3)N_(4)-GCr15 sliding friction pair under oil lubrication are adhesive wear,abrasive wear,and fatigue wear.The hybrid parameter Sdq can accurately reflect the change of the microstructure of the Si_(3)N_(4)-GCr15 friction pair.Abaqus 2016 software was used to simulate the stress distribution of Si_(3)N_(4)-GCr15 friction pair during wear.It was found that when the Si_(3)N_(4)ball and GCr15 disc rub against each other under the action of cyclic stress,the stress concentration phenomenon appeared in the edge area of the artificial pit,which accelerated the wear process.
作者
丁明瑞
陈志雄
Ding Mingrui;Chen Zhixiong(School of Air Transportation,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《农业装备与车辆工程》
2023年第2期74-79,共6页
Agricultural Equipment & Vehicle Engineering
关键词
航空发动机
混合陶瓷轴承
油润滑
磨损试验
有限元分析
失效机理
aero-engine
hybrid ceramic bearing
oil lubrication
wear test
finite element analysis
failure mechanism
作者简介
丁明瑞(1997-),男,硕士研究生,主要研究方向:航空发动机滚动轴承材料磨损状态监测。E-mail:17098916436@163.com;通信作者:陈志雄(1977-),男,博士,副教授,主要研究方向:航空发动机状态监控与故障预测、航空维修工程、安全性评估与持续适航。E-mail:chenzhixiong1000@hotmail.com。
