Field identification of stiffness and damping characteristics of fluid film bearings

Sameh H. Tawfick, Aly EL-Shafei, M. O.A. Mokhtar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A method for field identification of stiffness and damping characteristics of fluid film bearings FFB is derived. The method relies on measuring both the shaft and the housing's vibration response. Two independent unbalance runs are performed and the synchronous response is recorded. Using the housing vibration data, the amount of unbalance acting on the bearing, as well as the flexible shafts'"modal mass" can be experimentally determined. Thus, with this method, field engineers can identify the bearings impedance in flexible rotor-bearing systems. A test rig comprising a flexible shaft supported on two cylindrical journal bearings is used to verify the proposed method. The amount of uncertainty in the derived coefficients is calculated.

Original languageEnglish (US)
Title of host publication2008 Proceedings of the ASME Turbo Expo
Subtitle of host publicationPower for Land, Sea, and Air
Pages1191-1201
Number of pages11
EditionPART B
DOIs
StatePublished - Dec 1 2008
Externally publishedYes
Event2008 ASME Turbo Expo - Berlin, Germany
Duration: Jun 9 2008Jun 13 2008

Publication series

NameProceedings of the ASME Turbo Expo
NumberPART B
Volume5

Other

Other2008 ASME Turbo Expo
CountryGermany
CityBerlin
Period6/9/086/13/08

ASJC Scopus subject areas

  • Engineering(all)

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