陶瓷混合轴承与全钢轴承拟动态性能对比  

Quasi-dynamic performance comparison between ceramic hybrid bearing and all-steel bearing

作　　者：高利霞[1] 李贵林[1] 赵强[1] GAO Li-xia;LI Gui-lin;ZHAO Qiang(China Gas Turbine Establishment,Chengdu 610500,China)

机构地区：[1]中国燃气涡轮研究院,成都610500

出　　处：《燃气涡轮试验与研究》2016年第3期39-42,共4页Gas Turbine Experiment and Research

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.

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 

分 类 号：V233.45[航空宇航科学与技术—航空宇航推进理论与工程]