摘要
利用拟动力学方法建立了轴承性能分析模型，在DN值为2.45×106 mm·r/min的轴承运转条件下，对陶瓷混合轴承和全钢轴承的离心力、接触角、接触力、陀螺力矩、旋滚比、接触变形量的变化特性进行了全面的对比分析。研究表明，陶瓷混合轴承中滚动体的离心力不到全钢轴承的1/2，且各滚动体之间的差异及滚动体与套圈滚道接触角的变化要小于全钢轴承，其陀螺力矩和旋滚比也小于全钢轴承。即在高速运行条件下，相较于全钢轴承，陶瓷混合轴承具有更优越的综合性能。
A performance analysis model of the bearing was established by the quasi-dynamic method. Thedynamic characteristics of the ceramic hybrid bearing, such as centrifugal force, contact angle, contactforce, gyro moment, spin-roll ratio and contact deformation were studied and compared with that ofall-steel bearing at the DN value of 2.45×106 mm·r/min. The results show that the centrifugal forces of ballsin ceramic hybrid bearing were less than half of those in all-steel bearings, and their differences among allballs were very small while those change in a large range in all-steel bearings. The same was for the differ?ences of contact angles between ball and rings. The gyroscopic torque and spin-roll ratio in ceramic hybridbearings were smaller than those in all steel bearings. That is to say, the performance of ceramic hybridbearing is better than that of all-steel bearings when operating in high speed.
作者
高利霞
李贵林
赵强
GAO Li-xia;LI Gui-lin;ZHAO Qiang(China Gas Turbine Establishment,Chengdu 610500,China)
出处
《燃气涡轮试验与研究》
北大核心
2016年第3期39-42,共4页
Gas Turbine Experiment and Research
关键词
航空发动机
陶瓷混合轴承
全钢轴承
动态特性
高速工况
拟动力学分析
aero-engine
ceramic hybrid bearing
all-steel bearing
dynamic characteristics
high-speed working condition
quasi-dynamic analysis
