Effect of particle transient motion on lubrication
Abstract
Purpose
The purpose of this paper is to analyze the influence of particle motion on the lubrication characteristics. The dynamics of the particle in the lubricant is also studied.
Design/methodology/approach
The dynamics of the particle is studied using Newton's second law. The particle dynamic equation is solved to determine the particle velocity, angular velocity, and location. The modified Reynolds equation is solved in couple with particle motion to determine the film pressure and velocity.
Findings
The motion of a particle suspended in the lube oil is clarified. The initial relative velocity between the particle and the fluid has a significant effect on the lubrication. For the same particle location and velocity, the larger particle or the closer distance between particle center and lower plate has greater effects on the film pressure.
Research limitations/implications
The influence of the particle geometry on the lubrication is neglected in the study because of the small size of the particle, this neglect is idealized. Further study will take the effects of the particle geometry into consideration.
Originality/value
The paper provides the motion of the particle in the lubricant, and the modified Reynolds equation considering the particle translation as well as rotation is derived.
Keywords
Citation
Haiyan, H., Youyun, Z. and Zhenyuan, Z. (2010), "Effect of particle transient motion on lubrication", Industrial Lubrication and Tribology, Vol. 62 No. 3, pp. 126-135. https://doi.org/10.1108/00368791011034502
Publisher
:Emerald Group Publishing Limited
Copyright © 2010, Emerald Group Publishing Limited