引入滚动体尺寸偏差的球轴承寿命模型

周夕维; 徐华; 熊显智; 王琳

doi:10.13433/j.cnki.1003-8728.2015.0310

引入滚动体尺寸偏差的球轴承寿命模型

doi: 10.13433/j.cnki.1003-8728.2015.0310

1.
西安交通大学现代设计及转子轴承系统教育部重点实验室, 西安 710049

基金项目:

973国家重点基础研究发展计划项目（2011CB706601）资助

详细信息

作者简介:
周夕维（1988-），硕士研究生，研究方向为高速、高精密滚动轴承设计理论，zhouzhouxiwei@126.com

通讯作者:
徐华，教授，博士生导师，xuhua@mail.xjtu.edu.cn

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出版历程
- 收稿日期: 2013-07-08
- 刊出日期: 2015-03-05

The Life Model for Bearing Considering the Ball Size Deviation

1.
Key Laboratory of Education Ministry for Modern Design & Rotor-bearing System, Xi'An Jiaotong University, Xi'an 710049

摘要

摘要: 针对尺寸偏差引起的固定滚道应力循环状态的变化，提出了滚动轴承等效载荷态的概念，并在此基础之上，结合Lundberg-palmgren （L-P）寿命理论及Miner疲劳损伤累积假说，提出了一种修正L-P寿命模型。基于该疲劳寿命计算模型，以6008型普通深沟球轴承为例，考虑到滚动体尺寸偏差的分布形式，对滚动体尺寸偏差、载荷及游隙等因素对轴承疲劳寿命的影响进行了计算并对结果进行了统计学分析。模型预测结果与相关文献的试验数据进行了对比，得出如下结论：1）尺寸偏差值增大，疲劳寿命系数降低；2）随着载荷的增大，尺寸偏差对轴承疲劳寿命影响逐渐减弱；3）存在一个较小的负游隙使得轴承疲劳寿命系数达到最小；4）滚动体尺寸偏差服从呈正态分布时，轴承疲劳寿命系数亦呈正态分布。
- 尺寸偏差 /
- 等效载荷态 /
- 疲劳寿命 /
- 深沟球轴承 /
- 正态分布
Abstract: The inevitable size deviation in machining process induces the change of stress cycle state in fixed ring. Aiming at the change, the concept of equivalent loading state was proposed. Based on the equivalent loading state and combined Lundberg-palmgren (L-P) life theory with Miner's fatigue damage accumulationhypothesis, a modified L-P life model, including size deviation, was developed. By means of the life model, the effects of the size deviation, external load, and radial clearance were investigated in 6008 type deep groove ball bearing. Considering the statistical distribution of size deviation, statistics analysis of predicted results was conducted. The analytic results of the modified life model were compared with the experimental data of related literature, some conclusions were drawn as follows: 1) the life factor decrease with the increasing of size deviation; 2) the effect of the size deviation gradually decreases with the increasing of external load; 3) in particular negative clearance, the effect of the size deviation is worst; 4) if the size deviation is normally distributed, the distribution of life factors also obeys normal distribution.
- ball bearings /
- deep groove ball bearing /
- equivalent loading state /
- experiments /
- fatigue damage

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参考文献(12)

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