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Effect of boundary slip on elastohydrodynamic lubrication with arbitrary entrainment angle in elliptical contacts

Lei Cao (College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China)
Jianlin Cai (College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China)
Cheng Wang (College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China)
Tianyou Yang (College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China)
Wei Zhou (College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China)
Liwu Wang (College of Mechanical and Vehicle Engineering, Chongqing University, Chongqing, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 16 March 2023

Issue publication date: 4 April 2023

118

Abstract

Purpose

The purpose of this study is to describe and observe the influence of boundary slip associated with an arbitrary entrainment angle on the contact lubrication properties of ellipses.

Design/methodology/approach

Based on the modified Reynolds equation, the boundary slip of any angle is considered in the elliptic contact, and numerical simulation is carried out. In the above calculation, the progressive mesh densification method is used, which greatly reduces the computation time.

Findings

The results indicate that the variation of film thickness corresponding to different entrainment angles is distinct from those without considering boundary slip. In addition, boundary slip reduces the central film thickness and minimum film thickness, which makes the hydrodynamic pressure distribution smoother.

Originality/value

The present study focuses on the specific condition with the arbitrary direction of rolling and sliding velocity found in hypoid gears and worm, and some other components. The influence of boundary slip associated with arbitrary entrainment angle on the lubrication film thickness in elliptical contacts is first revealed, which improves a good understanding of elastohydrodynamic lubrication characteristics.

Keywords

Citation

Cao, L., Cai, J., Wang, C., Yang, T., Zhou, W. and Wang, L. (2023), "Effect of boundary slip on elastohydrodynamic lubrication with arbitrary entrainment angle in elliptical contacts", Industrial Lubrication and Tribology, Vol. 75 No. 3, pp. 273-281. https://doi.org/10.1108/ILT-09-2022-0262

Publisher

:

Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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