A Finite Element Method for the Calculation of Locus Paths in Dynamically Loaded Bearings

Abstract

A method using finite elements for the solution of journal bearings is outlined. The special properties of an exponentially shaped element are used together with a satisfactory approximation for the axial pressure profile. This approach is one hundred times faster than a conventional finite difference solution of equivalent accuracy. The method can be applied to the solution of locus paths for journal bearings under external dynamic load or under whirl conditions. The predictor-corrector method used to march out a locus path is briefly outlined and several typical loci are presented as examples.