期刊
MECHANISM AND MACHINE THEORY
卷 124, 期 -, 页码 179-196出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechmachtheory.2018.03.001
关键词
Ball bearings; Nonlinear contact model; Angular contact; EHD lubrication
资金
- CNPq
- Schaeffler Brazil
- SAE Unicamp
- Fapesp [2015/20363-6]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [15/20363-6] Funding Source: FAPESP
The knowledge of the dynamic behavior of rolling elements bearings and the contact properties have shown to be essential for model based fault diagnosis, lifetime estimation and reduction of noise in several industrial equipment application. This paper formulates the force and moments equilibrium of an angular contact ball bearing with five degrees of freedom accounting for the effects of the elastohydrodynamic (EHD) lubrication of its elements. A complete nonlinear model is derived and equivalent parameters for stiffness and damping of each contact were evaluated for different loading conditions. An iterative solution process was proposed to couple the bearing equilibrium and the EHD contact calculation, so as to generate the most suitable representation of the lubrication condition at the equilibrium point. The resulting reduced order model is promising to save computational costs and to make feasible the analysis of complex rotating systems supported by oil lubricated angular contact ball bearings. (C) 2018 Elsevier Ltd. All rights reserved.
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