考虑动态时变载荷的滚动轴承可靠性寿命评估方法

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国家科技期刊平台
NETL
NSTL
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中文摘要：载荷是滚动轴承运转过程中不可忽视的因素,不同特征的载荷会对轴承的可靠性产生差异影响.针对滚动轴承实际当量动载荷具有随机时变的特点,提出了一种考虑动态时变载荷的滚动轴承可靠性寿命评估方法,以解决传统方法忽略轴承载荷时变性导致的评估精度较低的问题.利用灰色预测模型,构建了轴承当量动载荷随机时变过程的分析模型,对小样本载荷数据进行预测补充;在此基础之上,提出了基于动态应力—强度干涉模型的轴承可靠性寿命评估方法,得到了动载荷的工作区间,从而获得轴承可靠性寿命区间;进行了圆柱滚子轴承NU206E的可靠性寿命测试,对该方法进行验证.结果表明:与传统方法相比,采用所提出的方法得到的轴承寿命评估值与测试值较接近,精度较高,评估时间较短,且能获得覆盖大部分测试值的寿命区间.结合灰色预测模型和动态应力—强度干涉模型的滚动轴承可靠性寿命评估方法具有良好的工程应用价值,为变载工况下的滚动轴承可靠性评估提供了新的思路.

外文标题：Reliability life evaluation method of rolling bearing considering dynamic time-varying loads

外文摘要：Load is a factor that cannot be disregarded during the running of rolling bearing,and loads with distinct characteristics will exert varying impacts on the reliability of bearing.In response to the stochastic time-varying nature of equivalent dynamic loads borne by rolling bearings,a reliability life evaluation method of rolling bearing considering dynamic time-varying loads was proposed to solve the problem of low evaluation accuracy caused by ignoring the time-varying bearing load in traditional methods.Based on the grey prediction model,the analysis model of the stochastic time-varying process of the bearing equivalent dynamic load was constructed,and the small sample load data was forecasted and supplemented.On this basis,an reliability life evaluation method of rolling bearing based on dynamic stress-strength interference model was proposed,and the working interval of dynamic load was obtained,so as to obtain the bearing reliability life interval.The reliability life test of cylindrical roller bearing NU206E was carried out to verify the proposed method.The results showed that,compared with the traditional method,the bearing life evaluation value obtained by the proposed method was close to the test values with higher accuracy and shorter evaluation time,and the life interval covering the most test values could be obtained.The method combining gray prediction model and dynamic stress-strength interference model has good engineering application value,and provides a new idea for reliability evaluation of rolling bearing under variable load conditions.

外文关键词：

rolling bearingreliability assessmentgrey prediction modeltime-varying stressstress-strength interference model

作者：

李军星、高锐、邱明、李燕科、刘静涛、刘志卫

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作者单位：

河南科技大学机电工程学院,河南洛阳 471003

机械装备先进制造河南省协同创新中心,河南洛阳 471003

高端轴承河南省协同创新中心,河南洛阳 471003

关键词：

滚动轴承可靠性评估灰色预测模型时变应力应力—强度干涉模型

基金：

国家自然科学基金资助项目河南省科技研发计划联合基金青年科学家项目河南省科技研发计划联合基金应用攻关项目河南省高校科技创新人才支持计划资助项目河南省高等学校青年骨干教师培养计划项目河南省青年人才托举工程项目

项目编号：

5200515922520081007323210381004324HASTIT0432021GGJS0482023HYTP050

出版年：

2024

DOI：

10.3785/j.issn.1006-754X.2024.03.213

工程设计学报

浙江大学中国机械工程学会

工程设计学报

CSTPCD北大核心

影响因子：0.694

ISSN：1006-754X

年,卷(期)：2024.31(4)

参考文献量10