Abstract
To enhance the bearing stability, noncircular type bearings are often used instead of tilting-pad journal bearings. When the optimum design method is applied to elliptical type journal bearing, it is found that the stability of the bearing could be improved greatly by choosing bearing orientation angle as the optimum. In this study, the effects of bearing orientation angle on the stabilities of rotating shaft are examined theoretically for the cases of six kinds of noncircular type journal bearings which have circular and elliptical base geometries.
