Behavior of Conical Porous Hybrid Journal Bearing with Pseudoplastic Lubricant

In recent years, porous bearings have been increasingly used in various industrial applications because they are less noisy, have good precision, and are relatively maintenance free. In this article, the numerical analysis of a conical porous hybrid journal bearing system (CPHJBS) has been carried out. The interactive effects of permeability parameter, semi cone angle, and pseudoplastic (shear thinning) lubricant behavior on the performance of CPHJBS have been theoretically investigated. The governing Reynolds equation for a non-Newtonian lubricant in the bearing clearance space of CPHJBS is solved using a finite element model. Findings of this study indicate that the CPHJBS operating with a pseudoplastic lubricant offers a higher value of stability threshold speed margin ((omega) over bar (th))for the lower value of semi cone angle (gamma = 10(0)) and lower value of permeability parameter (Psi = 0.005).

Automated summary

Recent years have seen an increase in the use of porous bearings in industrial applications due to their noise reduction, precision, and low maintenance. The study focuses on the numerical analysis of a conical porous hybrid journal bearing system (CPHJBS) and investigates the effects of permeability parameter, semi cone angle, and pseudoplastic lubricant behavior on its performance. Findings suggest that using a pseudoplastic lubricant in CPHJBS can improve stability threshold speed margin under certain conditions.