Experimental Force Coefficients of a Hydrostatic Thrust Bearing and Comparisons to Predictions
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lim, Homin | - |
dc.contributor.author | Ryu, Keun | - |
dc.date.accessioned | 2023-12-08T09:34:42Z | - |
dc.date.available | 2023-12-08T09:34:42Z | - |
dc.date.issued | 2023-06 | - |
dc.identifier.issn | 0000-0000 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/116057 | - |
dc.description.abstract | Reliable fluid film bearings for high-performance turbomachinery provide significantly extended operating life with controllable stiffness and damping force coefficients at low cost. Hydrostatic thrust bearings support thrust loads and control axial motions. This paper reports measurements and predictions of static and dynamic load characteristics of a hydrostatic thrust bearing fed with pressurized air. The current bearing model uses dynamic axial periodic motion amplitudes, that is models as a function of the initial film thickness, to predict the dynamic force coefficients. Note that, presently, the recorded frequencies and their amplitudes of pneumatic hammer instability along the axial direction are implemented as an external excitation source. The measured and predicted static stiffnesses increase as the film thickness decrease and supply pressure into the bearing increase. The predicted dynamic force coefficients show a favorable agreement with the test data. Analysis reveals the negative damping coefficients and damping ratios as a distinctive onset condition of the present pneumatic hammer instability of the test bearing. A careful recess design and adequate operation conditions along with an accurate prediction can avoid or prevent undesirable pneumatic hammer instability in hydrostatic thrust bearings. The present work extends the knowledge database of hydrostatic thrust bearings with pneumatic hammer instability and provides their design guideline for various operating conditions. Copyright © 2023 by ASME. | - |
dc.format.extent | 11 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | American Society of Mechanical Engineers (ASME) | - |
dc.title | Experimental Force Coefficients of a Hydrostatic Thrust Bearing and Comparisons to Predictions | - |
dc.type | Article | - |
dc.publisher.location | 미국 | - |
dc.identifier.doi | 10.1115/GT2023-104057 | - |
dc.identifier.scopusid | 2-s2.0-85177582550 | - |
dc.identifier.bibliographicCitation | Proceedings of the ASME Turbo Expo, v.11A, pp 1 - 11 | - |
dc.citation.title | Proceedings of the ASME Turbo Expo | - |
dc.citation.volume | 11A | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 11 | - |
dc.type.docType | Conference Paper | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | Dynamic force coefficients | - |
dc.subject.keywordAuthor | Fluid film bearings | - |
dc.subject.keywordAuthor | Gas bearings | - |
dc.subject.keywordAuthor | Pneumatic hammer instability | - |
dc.subject.keywordAuthor | Static load characteristics | - |
dc.subject.keywordAuthor | Thrust bearings | - |
dc.identifier.url | https://asmedigitalcollection.asme.org/GT/proceedings-abstract/GT2023/87059/V11AT22A037/1168326 | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
55 Hanyangdeahak-ro, Sangnok-gu, Ansan, Gyeonggi-do, 15588, Korea+82-31-400-4269 sweetbrain@hanyang.ac.kr
COPYRIGHT © 2021 HANYANG UNIVERSITY. ALL RIGHTS RESERVED.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.