Impact Elastohydrodynamics in Point Contacts

When an elastohydrodynamically lubricated conjunction is subjected to pure impact, two types of oil entrapments can be generated; one is the central dimple and the other is the peripheral dimple. This article presents some numerical analyses to simulate laboratory experiments and study the influence...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part J, Journal of engineering tribology Journal of engineering tribology, 2011-01, Vol.225 (1), p.1-12
Main Authors: Kaneta, M, Nishikawa, H, Mizui, M, Guo, F
Format: Article
Language:English
Subjects:
Correlation analysis
Fluid mechanics
Lubricants & lubrication
Mechanical engineering
Numerical analysis
Oil
Simulation
Studies
Viscosity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:When an elastohydrodynamically lubricated conjunction is subjected to pure impact, two types of oil entrapments can be generated; one is the central dimple and the other is the peripheral dimple. This article presents some numerical analyses to simulate laboratory experiments and study the influence of input parameters on the two types of oil entrapments. It has been found that the film profile (oil entrapment) in the central contact region is mainly determined by the loading speed at the initial stage but the film profile in the peripheral region is determined by the late stage of the loading. The central dimple shifts to the peripheral dimple as the loading speed increases. The amount of oil entrapped in the elastohydrodynamic lubrication conjunction increases as the loading speed and the maximum load increase. The results also indicated that a critical viscosity exists in the formation of the oil entrapment. The film thickness obtained by numerical simulations was well correlated with the experimental results.
ISSN:1350-6501
2041-305X
DOI:10.1177/13506501JET838