An elastohydrodynamic (EHD) analysis is performed for two misaligned hybrid journal bearings working on the same shaft. To predict the correct system behavior we are forced to consider the interdependence between the two bearings and the shaft. The presented algorithm is based on finite element discretization. It allows accurate analysis of film breakdown and reforming, during the functioning of actual devices. Active (full film) and inactive (cavitated) film zones are determined for nonstationary running conditions. Using a convenient iterative solution procedure, the converged solutions for lubricant flow and elastic deformation fields are obtained. The analysis of thickness, pressure, power loss, and elastic deformation of both bearings and shaft surface allows the optimization of any parameter for the two hybrid bearings.

Keywords:
machine bearings, shafts, elastodynamics, hydrodynamics, lubrication, finite element analysis, elastic deformation, film flow, liquid films, iterative methods, lubricating oils, Elastohydrodynamic Behavior, Hybrid Bearing, Misaligned Bearing, Lubrication Flows
Topics:
Bearings, Pressure, Stress, Flow (Dynamics), Deformation, Journal bearings, Finite element analysis
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