Analysis of equivalent supporting point location and carrying capacity of misaligned journal bearing

Abstract

This paper analyzes property of vertical misaligned journal bearing, aiming to provide an approach for efficiently analyzing equivalent supporting point location and carrying capacity of misaligned journal bearing without using numerical simulation. Equivalent supporting point location is described through the dimensionless axial coordinate of equivalent supporting point and presented versus length-diameter ratio, eccentricity ratio, and dimensionless misalignment angle. The ratio between misaligned bearing carrying capacity and corresponding aligned bearing carrying capacity is referred as to misalignment factor for carrying capacity for short. Functions of equivalent supporting point location and misalignment factor for carrying capacity dependent on length-diameter ratio, eccentricity ratio, and dimensionless misalignment angle are obtained. By typical examples, the accuracies of the functions are verified to meet engineering requirements.