Analysis of Lubrication Characteristic of Single Droplet in the Elastohydrodynamic Lubrication Contact

doi:10.3901/JME.2018.03.095

Abstract

Abstract: In oil-air lubrication lubricants in the form of micro oil droplets are supplied to tribo-pairs and build oil film. Different solid-liquid interface leads to different spreading radius of micro oil droplet. With supplying a single micro oil droplet an EHL model is built to numerically simulate the process of building lubricant film. The results show that when the volume of micro oil droplet is unchanged, lubrication effect is related to initial spreading radius of micro oil droplet, and there is a certain range of spreading radius which enables efficient film forming. The desired spreading radius is affected by the entrainment velocity and oil viscosity.

Key words: elastohydrodynamic lubrication (EHL), expansion, micro oil droplet, oil-air lubrication

CLC Number:

TH117

LI Shuyi, GUO Feng, LI Xinming. Analysis of Lubrication Characteristic of Single Droplet in the Elastohydrodynamic Lubrication Contact[J]. Journal of Mechanical Engineering, 2018, 54(3): 95-100.

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