Elastic Deformation Effects on Self-Lubricating Journal Bearings Using Pseudo-Plastic Lubricants

Autor: Maamar Malki, Salah Larbi, Sid Ali Boubendir, Djamel Hammoudi, Rachid Bennacer
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Tribology Online, Vol 16, Iss 4, Pp 299-308 (2021)
Druh dokumentu: article
ISSN: 1881-2198
DOI: 10.2474/trol.16.299
Popis: In this study, we have analyzed the effect of elastic deformations on the static characteristics of finite self-lubricating journal bearings. This analysis takes into account the rheological lubricant behavior which obeys to Rabinowitsch law. The governing equations considering both the fluid flow in the porous bush and the fluid film lubricant are based on Rabinowitsch fluid model and solved numerically using the finite difference method. The static performances of the porous journal bearings have been investigated for various parameters such as the elastic deformation parameter, the nonlinear factor which characterizes the pseudo-plastic fluid, the eccentricity ratio and the bush permeability. Obtained results demonstrated that the pseudo-plastic lubricant decreases the characteristics of the porous journal bearings compared to the Newtonian fluid lubricant. This reduction is more pronounced where the effect of both elasticity and permeability of the bush have been considered.
Databáze: Directory of Open Access Journals