| DOI | Resolve DOI: https://doi.org/10.1115/GT2011-46761 |
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| Author | Search for: Conlon, M.J.1; Search for: Dadouche, A.1; Search for: Dmochowski, W.M.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Conference | ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, GT2011, 6 June 2011 through 10 June 2011, Vancouver, BC |
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| Subject | 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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| Abstract | 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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| Publication date | 2011 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 21271611 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 3d595460-ed00-47df-8849-13ac617412e5 |
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| Record created | 2014-03-24 |
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| Record modified | 2020-04-21 |
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