滚动轴承寿命的统计模拟  

Statistical Simulation of Life for Rolling Bearings

作　　者：姜英硕[1] 姜祺[2] 周佳新[1] 汪东华 

机构地区：[1]沈阳建筑大学,沈阳110168 [2]清华大学工业工程系,北京100084 [3]中交煤气设计院有限公司,沈阳110026

出　　处：《轴承》2014年第9期32-35,共4页Bearing

摘　　要：用统计模拟方法查明了集材用拖拉机在模拟工况下滚动轴承载荷和转速服从正态分布,确定了集材用拖拉机轴承寿命服从对数正态分布,其分布对数参数均值LhL为9.412 5 h;均方差SL为0.217 2 h。求出了轴承可靠度等可靠性指标,可作为预测轴承可靠性指标和备件数量的依据。The load and rotational speed in rolling bearings obeys normal distribution for yarding tractor under the simulating operating conditions, which are verified by using the statistical simulation method. It is indicated that the bearing life obeys lognormal distribution,having distributed iogarithmic parameters： mean value LhL =9, 4125 h, mean square error SL =0.217 2 h. The reliability indexes for bearings are calculated, which can be regarded as basis for forecasting the reliability indexes and spare parts of bearings.

关 键 词：滚动轴承 寿命 统计模拟 对数正态分布 

分 类 号：TH133.33[机械工程—机械制造及自动化] O212[理学—概率论与数理统计]