摘要
建立航空圆柱滚子轴承寿命计算的数学模型,比较ISO281:1990和ISO281:2007两种标准中关于滚动轴承寿命计算方法及修正系数的差异。针对航空轴承样本少、修正系数取值困难等问题,通过采用道森-希金森方程计算最小油膜厚度,确定滚动轴承的修正系数。通过某型直升机传动系统圆柱滚子轴承寿命的计算研究,验证了该方法的可行性。
The mathematical model of aviation cylindrical roller bearings fatigue life was established.The comparative a- nalysis of the calculation methods for rolling bearing life was conducted for ISO281：1990（the equivalent of GB/T6391- 2003） and ISO 281：2007 （the equivalent of GB/T6391-2010）, and the differences of the calculation method and the life modification factor were analyzed. Considering the lacking of aviation bearing samples and the difficulty of defining the val- ue of modification factor, Dowson-Higginson equation was used to calculate the least EHD film thickness to determine the modification factor.The feasibility of this method was validated in the research of the life calculation of cylindrical roller bearing of some helicopter drive system.
出处
《润滑与密封》
CAS
CSCD
北大核心
2015年第6期8-12,94,共6页
Lubrication Engineering
基金
国防科技预研项目(8130×××××)
关键词
滚动轴承
最小油膜厚度
疲劳寿命
roller bearing
the least film thickness
fatigue life
