On the influence of lubricant properties on the dynamics of two-dimensional journal bearings. (English) Zbl 0963.76025
Summary: In dynamically loaded journal bearings it is important to predict and assess the performance of lubricants within the bearing with respect to friction, wear and load bearing capacity over a wide range of operating conditions. In this paper, we describe a mathematical model which allows for a systematic study of the effects of shear-thinning, pressure-thickening and temperature-thinning viscosity on the dynamics and stability of a journal bearing. It is also shown that the thermal conductivity of the bearing can have a major effect on the minimum oil film thickness attained in the bearing.
MSC:
76D08 | Lubrication theory |
76M22 | Spectral methods applied to problems in fluid mechanics |
76U05 | General theory of rotating fluids |
80A20 | Heat and mass transfer, heat flow (MSC2010) |