• VISCOSITY VARIATION EFFECT ON THE COUPLE STRESS SQUEEZE FILM CHARACTERISTICS OF SHORT POROUS JOURNAL BEARINGS

Abstract

The purpose of this paper is to study the effect of viscosity variation and non-Newtonian couple stress fluid on the squeeze film lubrication of short porous journal bearing. The problem is analyzed on smooth and porous bearing. The modified Reynold’s equation for short porous journal bearing accounting for the viscosity variation of couple stress fluid is mathematically modelled to obtain solution of squeeze film pressure, load carrying capacity and squeeze film time. The results obtained are comparable with standard results and are shown in terms of graphs. The squeeze film pressure , load carrying capacity and squeeze film time significantly enhances for couple stress lubricants as compared to the corresponding Newtonian case. On increasing value of viscosity variation parameter signify a decrease in viscosity, which may be consequence of temperature rise.