Nano-lubricant film formation due to combined....pdf (361.48 kB)
Nano-lubricant film formation due to combined elastohydrodynamic and surface force action under isothermal conditions
journal contribution
posted on 2009-06-03, 12:10 authored by Mohamed F. Abd Alsamieh, Homer RahnejatThis paper presents the results of numerical prediction of the lubricant film thickness and pressure distribution in concentrated counterformal point contact under isothermal conditions. The operating conditions, which include load and speed of entraining motion, promote the formation of ultra-thin films; these are formed under the combined action of elastohydrodynamic lubrication (EHL), the surface contact force of solvation and molecular interactions due to the presence of Van der Waals forces. A numerical solution has been carried out, using the low-relaxation Newton-Raphson iteration technique, applied to the convergence of the hydrodynamic pressure. The paper shows that the effect of surface forces become significant as the elastic film (i.e. the gap) is reduced to a few nanometres. The numerical predictions have been shown to conform well to the numerical work and experimental findings of other research workers.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
ABD-ALSAMIEH, M.F. and RAHNEJAT, H., 2001. Nano-lubricant film formation due to combined elastohydrodynamic and surface force action under isothermal conditions. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 215 (9), pp. 1019-1029Publisher
Professional Engineering Publishing / © IMECHEVersion
- VoR (Version of Record)
Publication date
2001Notes
This article was published in the Journal, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science [© IMECHE]. The definitive version is available at: http://www.pepublishing.com/ISSN
0954-4062Language
- en