Article
Version 1
Preserved in Portico This version is not peer-reviewed
A New Type of Misaligned Journal Bearing with Flexible Structure
Version 1
: Received: 5 May 2023 / Approved: 6 May 2023 / Online: 6 May 2023 (10:28:27 CEST)
A peer-reviewed article of this Preprint also exists.
Jeon, W.-J.; Hong, S.-H. A New Type of Misaligned Journal Bearing with Flexible Structure. Lubricants 2023, 11, 256. Jeon, W.-J.; Hong, S.-H. A New Type of Misaligned Journal Bearing with Flexible Structure. Lubricants 2023, 11, 256.
Abstract
A flexible structure is applied to improve the lubrication performance of a misaligned journal bearing. The journal bearing is representative sliding bearing and there are damages due to metal-to-metal contact by misalignment. Since misalignment is an unavoidable phenomenon, a journal bearing with a flexible structure was proposed as a way to improve it. The lubrication characteristics of the bearing are evaluated numerically under steady-state condition. EHL (elastohydrodynamic lubrication) analysis considering elastic deformation was performed. The lubrication performance is compared in accordance with variation of the geometry of the flexible structure and evaluated based on the minimum film thickness. Moreover, the results of the journal bearing with flexible structure are compared with those of the journal bearing without the flexible structure. The flexible structure is then applied in the form of a groove to the area supporting high load on the journal bearing; it is elastically deformed by the generated oil-film pressure, which helps to obscure a larger oil film. Through numerical analysis, it is found that the journal bearing with flexible structure can improve the lubrication performance in the misaligned condition.
Keywords
elastohydrodynamic lubrication (EHL); flexible structure; minimum film thickness; misaligned journal bearing
Subject
Engineering, Mechanical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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