Behaviors of a micro oil droplet in an EHL contact

Xinming LI; Feng GUO; Shaopeng WANG; Chenglong LIU; Wenzhong WANG

doi:10.1007/s40544-016-0132-8

Friction 2016, 4(4): 359-368 https://doi.org/10.1007/s40544-016-0132-8

Research Article |

Open Access | Issue | Published: 23 December 2016

Behaviors of a micro oil droplet in an EHL contact

Show Author's Information Hide Author's Information Xinming LI^¹, Feng GUO^¹(

), Shaopeng WANG^¹, Chenglong LIU^¹, Wenzhong WANG^²

¹ School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China

² School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

Keywords:

elastohydrodynamic lubrication, oil droplet, spreading, optical interferometry

Cite this article:

LI X, GUO F, WANG S, et al. Behaviors of a micro oil droplet in an EHL contact. Friction, 2016, 4(4): 359-368. https://doi.org/10.1007/s40544-016-0132-8

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Abstract

Oil–air lubrication supplies lubricants in the form of droplets to elastohydrodynamic lubrication (EHL) contacts, such as those in high-speed spindle bearings. However, there is a paucity of information related to understanding the lubrication behaviors of oil droplets within EHL contacts. In this study, behaviors of lubricant droplets, in terms of spreading around a static contact as well as passing through a rolling contact, were studied with an optical ball-on-disk EHL test rig. Influences of oil droplet size, viscosity, and surface tension on droplet spreading were examined. Lubricating film formation was also investigated when droplets traveled through the EHL contact region. The results indicated that droplet size and running speed significantly influenced film profiles. With increasing entrainment speeds, a small droplet passed through the contact without spreading and generated films with a significant depression in the central contact region.

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Behaviors of a micro oil droplet in an EHL contact

Show Author's information Hide Author's Information Xinming LI^¹, Feng GUO^¹(

), Shaopeng WANG^¹, Chenglong LIU^¹, Wenzhong WANG^²

¹ School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China

² School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China

Abstract

Keywords: elastohydrodynamic lubrication, oil droplet, spreading, optical interferometry

References(13)

[1]

Tret’yakov E I, Yurchenko N A, Lysyak A A. Improving oil-air lubrication systems. Metallurgist 48(7–8): 414-416 (2004)

DOI Google Scholar

[2]

Höhn B R, Michaelis K, Otto H P. Minimised gear lubrication by a minimum oil/air flow rate. Wear 266(3–4): 461-467(2009)

DOI Google Scholar

[3]

Dudorov E A, Ruzanov A I, Zhirkin Y V. Introducing an oil-air lubrication system at a continuous-casting machine. Steel in Translation 39(4): 351-354 (2009)

DOI Google Scholar

[4]

Jeng Y R, Gao C C. Investigation of the ball-bearing temperature rise under an oil-air lubrication system. Proc Inst Mech Eng Part J: J Eng Tribol 215(2): 139-148 (2001)

DOI Google Scholar

[5]

Wu C H, Kung Y T. A parametric study on oil/air lubrication of a high speed spindle. Precis Eng 29(2): 162-167 (2005)

DOI Google Scholar

[6]

Jiang S H, Mao H B. Investigation of the high speed rolling bearing temperature rise with oil-air lubrication. ASME J Tribol 133(2): 021101 (2011)

DOI Google Scholar

[7]

Moon J H, Lee H D, Kim S I. Lubrication characteristics analysis of an air-oil lubrication system using an experimental design method. Int J Prec Eng Manuf 14(2): 289-297 (2013)

DOI Google Scholar

[8]

Spikes H. Sixty years of EHL. Lubr Sci 18(4): 265-291 (2006)

DOI Google Scholar

[9]

Damiens B, Venner C H, Cann P M E, Lubrecht A A. Starvation lubrication of elliptical EHD contacts. ASME J Tribol 126: 105-111 (2004)

DOI Google Scholar

[10]

Guo F, Wong P L. A multi-beam intensity-based approach for thin lubricant film measurements in non-conformal contacts. Proc Inst Mech Eng J Eng Tribol 216: 281-291 (2002)

DOI Google Scholar

[11]

Pemberton J, Cameron A. A mechanism of fluid replenishment in elastohydrodynamic contacts. Wear 37: 185-190 (1976)

DOI Google Scholar

[12]

Jocord B, Pubilier F, Cann P M E, Lubrecht A A. An analysis of track replenishment mechanisms in the starved regime. In Proceedings of the 25th Leeds-Lyon Symposium on Trib, 1999: 483-492.

DOI

[13]

Liu X, Guo D, Liu S, Xie G, Luo J. Interfacial dynamics and adhesion behaviors of water and oil droplets in confined geometry. Langmuir 30: 7695-7702 (2014)

DOI Google Scholar

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Acknowledgements

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Publication history

Received: 24 August 2016

Revised: 28 October 2016

Accepted: 16 November 2016

Published: 23 December 2016

Issue date: June 2021

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Acknowledgements

The authors would like to express their thanks to the financial supports from the Natural Science Foundation of China (No. 51405525), Doctoral Scientific Fund Project of the Ministry of Education of China (No. 20133721110002) and Outstanding Young Scientist in Shandong Province (No. BS2014ZZ004).

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