A mass-conserving, mode-based elastohydrodynamic lubrication model, which includes combined effects of journal and sleeve elasticity, is described. Application to a sample cylindrical bearing system (geometrically similar to automotive main and connecting rod bearings) shows that relative displacement of an elastic journal and sleeve can be represented by a set of mode shapes which are qualitatively similar to those obtained with a rigid journal, while the corresponding mode eigenvalues are found to be dependent on journal elasticity. Performance evaluation under steady and pure squeeze loading shows that a sufficiently compliant hollow journal can reduce film pressure and improve film thickness when compared with its rigid counterpart. [S0742-4787(00)01301-1]

Issue Section:
Technical Papers
Keywords:
hydrodynamics, elasticity, lubrication, machine bearings, performance evaluation, film flow
Topics:
Bearings, Elasticity, Elastohydrodynamic lubrication, Film thickness, Pressure, Stress, Stiffness, Mode shapes, Eigenvalues, Performance evaluation, Displacement, Equilibrium (Physics), Lubrication
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Copyright © 2000
 by ASME
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