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

Abstract

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.

Effect of bearing shell deformation and ER fluid behavior on two-lobed slot-entry hybrid journal bearing

“…The results also show that the journal bearing with a compliant liner performs better in thermal conditions. Malki et al 18 studied the dual behavior of pseudoplastic lubricant and elastic deformation effect in porous JBs. It was noticed that the elastic deformation in porous JBs reduces the maximum pressure, load capacity, and attitude angle.…”

A Review of Performance of Textured Journal Bearing

“…Journal bearings are commonly employed in high-speed rotating machinery such as turbines and compressors to support and transmit the radial load [1][2][3]. Due to growing demands for operational conditions and energy concerns, efforts are being made globally to improve the performance behaviour of journal bearing.…”