Abstract
AbstractAs key mechanical components, hydrodynamic sliding bearings widely used in rotating machinery can significantly affect the running state, reliability, and life of the rotor system. Bearing static characteristics are required for the determination of the dynamic characteristics. In the present study, the static characteristics of the five-pad tilting-pad journal bearing and the five-lobe journal bearing have been comparatively analyzed.The main difference be-tween these two kinds of bearings is that the pads of the former can tilt freely around their pivots.The numerical results indicate that the former owes the excellent stability due to pads tilting freely around the pivot in comparison with the latter. Further research shows that the characteristics of the tilting-pad journal bearing can be improved by increasing the preload factor and length-to-diameter ratio, which has a certain practical significance for the application of tilting-pad journal bearings.KeywordsComparative analysisFive-pad tilting-pad journal bearingFive-lobe journal bearingStatic characteristics
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