Full Content is available to subscribers

Subscribe/Learn More  >

Understanding the Effect of Systematic Errors on the Accuracy of Experimental Measurements of Fluid-Film Bearing Dynamic Coefficients

[+] Author Affiliations
Benstone Schwartz, Roger Fittro, Carl Knospe

University of Virginia, Charlottesville, VA

Paper No. GT2017-64665, pp. V07AT34A028; 13 pages
  • ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition
  • Volume 7A: Structures and Dynamics
  • Charlotte, North Carolina, USA, June 26–30, 2017
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-5092-3
  • Copyright © 2017 by ASME


Designing high-performance industrial machinery with fluid-film bearings for safe and stable operation relies on accurate stability prediction. One element of accurate stability prediction is fluid-film bearing properties. Bearing codes are utilized to predict fluid-film bearing properties and these prediction models are validated using various test rigs. Due to systematic errors present in test rigs, estimated bearing coefficients have associated uncertainty. Uncertainty in fluid-film bearing coefficient estimation due to displacement measurement error, force measurement error, and rotor flexibility is analyzed. A single-degree-of-freedom system model is analyzed to understand trends in uncertainties. Computer modeling software is used to develop a modular, high-fidelity model to analyze a test rig for worst-case uncertainty in fluid-film bearing coefficient estimation for a tilting-pad journal bearing. The results show that for high excitation frequencies the uncertainty is large enough that estimated coefficients are practically useless.

Copyright © 2017 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In