| DOI | Trouver le DOI : https://doi.org/10.1115/GT2011-46761 |
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| Auteur | Rechercher : Conlon, M.J.1; Rechercher : Dadouche, A.1; Rechercher : Dmochowski, W.M.1 |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Conférence | ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011, 6 June 2011 through 10 June 2011, Vancouver, BC |
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| Sujet | Cylindrical bore; Dynamic coefficient; Dynamic performance; Dynamic property; Excitation frequency; Mass-spring-damper system; Operating condition; Operating temperature; Plain journal bearings; Power-losses; Rotational speed; Rotor dynamic coefficients; Specific loads; Steady state performance; Aspect ratio; Exhibitions; Frequency domain analysis; Journal bearings; Shaft displacement; Turbines; Landforms |
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| Résumé | This paper evaluates two different journal bearings: a cylindrical bore plain journal bearing and a tri-lobe taper land bearing. Each bearing has the same nominal diameter (89 mm) and aspect ratio (L/D = 0.7). The shaft rotational speed ranged from 6krpm to 14krpm and the bearing specific load from 700kPa to 2800kPa. The bearings' steady-state performance is evaluated according to relative bearing and shaft displacement, bearing operating temperature and power loss. A frequency-domain analysis is used to determine bearing rotordynamic coefficients - it treats the bearing as a mass-spring-damper system. Excitation frequencies range between 20Hz and 350Hz. Ultimately, the tri-lobe taper land bearing offers better stability whereas the cylindrical bore plain journal bearing has a lower eccentricity and runs cooler for a given operating condition. The dynamic properties of the two bearings are found to be similar, although the higher stability of the tri-lobe taper land bearing is also reflected in the dynamic coefficients. Copyright © 2011 by ASME. |
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| Date de publication | 2011 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21271611 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 3d595460-ed00-47df-8849-13ac617412e5 |
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| Enregistrement créé | 2014-03-24 |
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| Enregistrement modifié | 2020-04-21 |
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