[1] Lu Chunyu, Liu Shaojun,. A fatigue life prediction method of rolling bearingunder elliptical contact elastohydrodynamic lubrication [J]. Journal of Southeast University (English Edition), 2017, 33 (1): 46-52. [doi:10.3969/j.issn.1003-7985.2017.01.008]

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A fatigue life prediction method of rolling bearingunder elliptical contact elastohydrodynamic lubrication()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

33

Issue:

2017 1

Page:

46-52

Research Field:

Mechanical Engineering

Publishing date:

2017-03-30

Info

Title:

A fatigue life prediction method of rolling bearingunder elliptical contact elastohydrodynamic lubrication

Author(s):

Lu Chunyu;  Liu Shaojun

School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China

Keywords:

rolling bearing;  3-parameter Weibull distribution;  elastohydrodynamic lubrication(EHL);  fatigue strength;  contact fatigue life

PACS:

TH133.33

DOI:

10.3969/j.issn.1003-7985.2017.01.008

Abstract:

In order to more accurately predict the contact fatigue life of rolling bearing, a prediction method of fatigue life of rolling bearing is proposed based on elastohydrodynamic lubrication(EHL), the 3-parameter Weibull distribution and fatigue strength. First, the contact stress considering elliptical EHL is obtained by mapping film pressure onto the Hertz zone. Then, the basic strength model of rolling bearing based on the 3-parameter Weibull distribution is deduced by the series connection reliability theory. Considering the effect of the type of stress, variation of shape and fluctuation of load, the mathematical models of the P-S-N curve of the minimum life and the characteristic life for rolling bearing are established, respectively, and thus the prediction model of fatigue life of rolling bearing based on the 3-parameter Weibull distribution and fatigue strength is further deduced. Finally, the contact fatigue life obtained by the proposed method and the latest international standard(ISO281: 2007)about the fatigue life prediction of rolling bearing are compared with those obtained by the statistical method. Results show that the proposed prediction method is effective and its relative error is smaller than that of the latest international standard(ISO281: 2007)with reliability R> 0.93.

References:

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Memo

Memo:

Biographies: Lu Chunyu(1980—), male, graduate; Liu Shaojun(corresponding author), male, doctor, professor, liushaojun@csu.edu.cn.
Foundation item: The National Defense Advance Research Program(No. 81302XXX).
Citation: Lu Chunyu, Liu Shaojun. A fatigue life prediction method of rolling bearing under elliptical contact elastohydrodynamic lubrication[J].Journal of Southeast University(English Edition), 2017, 33(1):46-52.DOI:10.3969/j.issn.1003-7985.2017.01.008.

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