Abstract
Abstract
A method to analyse lubrication performance of journal bearing considering journal misalignment caused by shaft deformation under rotating load in a shaft-bearing system was established and validated by special experiments on a developed experimental rig of journal bearing. The experimental results show that the proposed analytical formulation and method can meet the researching requirements. Oil film pressure, end leakage flowrate, and friction coefficient of journal bearing at variant journal misalignment caused by shaft deformation under rotating load were calculated. The results show that journal misalignment makes obvious difference to distribution of film pressure and film thickness. The maximum film pressure increases markedly. The minimum film thickness reduces. End leakage flowrate increases. Friction coefficient of journal slightly changes. Therefore, in order to make the calculation of journal bearing more realistic and to achieve more reasonable design in shaft-bearing system, the influence of shaft deformation under load should be considered in lubrication analysis of journal bearing in a shaft-bearing system.
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