Effect of the slide-roll ratio on point contact EHL under oil droplet supply. (February 2019)

• Record Type: Journal Article
• Authors: Li, Shuyi; Guo, Feng; Li, Xinming; Liu, Chenglong; Liu, Xiaoling
• Is Part Of: Tribology international. Volume 130(2019)
• Page Start: 261
• Page End: 269
• Publication Date: 2019-02
• Subjects: Oil droplet -- Slide-roll ratio -- Elastohydrodynamic lubrication (EHL) -- Limited lubricant supply; Tribology -- Periodicals; 621.89
• DOI: 10.1016/j.triboint.2018.09.029
• Languages: English
• ISSNs: 0301-679X

Abstract

Abstract: Under oil droplet supply a simplified elastohydrodynamic lubrication (EHL) model incorporating slide-roll ratios has been established, and the lubrication behavior of one oil droplet passing through the contact zone was numerically simulated. The results showed that sliding elongates the oil droplet and the oil reservoir at the inlet, and thus the effective lubrication can be enhanced. However if the slide-roll ratio is too large lubrication failure may occur. The effect of the slide-roll ratio is markedly influenced by lubrication parameters η 0 u e, and the increase of η 0 u e leads to a decrease in the effective lubrication time. Heavy load reduces the effective lubrication time. Highlights: Considering the sliding effect, a simplified elastohydrodynamic lubrication model has been established under one oil droplet supply. Results show that sliding elongates the oil droplet and thus the effective lubrication can be enhanced. The effect of the slide-roll ratio is markedly influenced by lubrication parameters η 0 u e and load. The reasonable choice of oil droplet volume can prevent lubrication failure under relatively large slide-roll ratio.