Browse > Article
http://dx.doi.org/10.9725/kstle.2007.23.5.187

A Study on the Elastohydrodynamic Lubrication of Roller Contact according to Axial Profiles  

Jang, Si-Youl (School of Mechanical and Automotive Engineering Kookmin Univ.)
Kim, Wan-Doo (KIMM)
Kim, Min-Chul (Korea GMB Co.)
Publication Information
Tribology and Lubricants / v.23, no.5, 2007 , pp. 187-194 More about this Journal
Abstract
The profile of the roller in the axial direction is the main design factor in order to increase endurance life against the contact fatigue due to the stress concentration along the edge of the roller. Even under the elas-tohydrodynamic lubrication (ehl) conditions, the stress concentration along the edge of the roller greatly worsens the fatigue life both for the roller and contacting body. In this study, roller contacts of finite axial length are studied for the film thickness and pressure of ehl. For the real contact behaviors under the ehl conditions, multigrid and multi-level method is applied so that much higher loading conditions can be investigated. Several axial profiles of roller are investigated to verify how both ehl film and pressure are generated and some of them are recommended for the ehl contact condition.
Keywords
EHL(elastohydrodynamic lubrication); finite length roller contact; film thickness; pressure distribution; roller; axial profile; multigrid and multi level method;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Heydar, M., Gohar, R., 'The Influence of Axial Profile on Pressure Distribution in Radially Loaded Rollers,' Journal of Mechanical Engieering Science, Vol. 21, No.6, pp. 381-388, 1979   DOI
2 Rahnejat, H., Gohar, R., 'Design of Profiled Taper Roller Bearing,' Tribology International, Vol. 12, No. 1979, pp. 269-275, 1979   DOI   ScienceOn
3 Hamrock, B. J., Fundamentals of Fluid Film Lubrication, McGraw-Hill, Inc., 1994
4 Venner, H., Multilevel Solution of the EHL line and Point Contact Problems, Ph.D. Thesis, Twente University, Enschede, the Netherlands, 1991
5 Park, T., Kim, K., 'Elastohydrodynamic Lubrication of a Finite Line Contact,' Wear 223, pp. 102-109, 1998   DOI   ScienceOn
6 Kaneta, M., 'For the Establishment of a New EHL Theory,' Lubrication at the Frontier, Elsevier Science B.V., pp 25-36, 1999