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Stochastic models for turbulent lubrication of bearing with rough surfaces

Authors :
Jun Sun
Shaoyu Zhu
Guixiang Zhu
Biao Li
Yanping Ren
Hu Wang
Xiaoyong Zhao
Qin Teng
Source :
Tribology International. 136:224-233
Publication Year :
2019
Publisher :
Elsevier BV, 2019.

Abstract

Currently used turbulent lubrication model that considers the effects of surface roughness can only handle the isotropic rough surfaces and cannot handle the rough surfaces with directional properties. In this paper, based on the stochastic method and the Ng-Pan turbulent model, the stochastic turbulent lubrication models of one-dimensional longitudinal rough surface, one-dimensional transverse rough surface and isotropic rough surface are derived. The turbulent lubrication performance of a journal bearing with isotropic rough surface is calculated by the stochastic turbulent lubrication model. The results are in good agreement with the corresponding experimental data. Moreover, the proposed stochastic turbulent lubrication models are also suitable for parts of friction pairs such as journal bearing and thrust bearing.

Details

ISSN :
0301679X
Volume :
136
Database :
OpenAIRE
Journal :
Tribology International
Accession number :
edsair.doi...........65752bfc3e16076cdbb7ad7c3d6617b0