A FINITE ELEMENT ANALYSIS OF HYDRODYNAMIC CYLINDRICAL JOURNAL BEARING

Lotfi DAMMAK and Ezzeddine HADJ-TAIEB

Unit of research, modelling and applied fluid mechanics,National school of engineers of Sfax, BP. 1173, 3038 SFAX, TUNISIA
e-mail: Lotdamak@yhoo.fr
e-mail: Ezed.Hadj@enis.rnu.tn

ABSTRACT
This paper presents an analysis of the pressure profile of a fluid flow in a journal bearing. The flow in the bearing is considered to be isothermal, laminar, permanent and incompressible. The lubricant is assumed to be isoviscous. Basing on the Stokes theory and the continuity and the momentum equations of the flow field with couple stress, the Reynolds equation is deduced. This equation governs the lubricant pressure in the
journal bearing. The Reynolds equation is numerically resolved by using the finite element method. A code of 3D calculation "MPEF", based on the Galerkin formulation, is applied to obtain the solution of the film pressure distribution. The numerical results are compared with the analytic solutions of Summerfield and Ocvirk.

 
KEYWORDS: journal bearing, Reynolds equation, hydrodynamic lubrication, finite element method.


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