Static Characteristic of Infinitely Short Journal Bearing with Biodiesel-Based Oils

Abstract

This paper presented the static characteristics of infinitely short journal bearing with biodiesel-based oils. The non-Newtonian biodiesel-based oils were mixed with Polyisobutylene to improve viscosity index. The relationship between shear stress and shear rate of the biodiesel-based oils can be obtained experimentally and can be expressed as the power-law model. Reynold’s equation was formulated to calculate the static characteristic of journal bearing with biodiesel-based oils. Numerical results showed the oil film pressure distribution, attitude angles and load carrying capacity.