Non Linear Behaviour of Oil Film Bearings and its Relevance in Force Identification Procedures PUBLIC ACCESS

[+] Author Affiliations
Nicolò Bachschmid, Riccardo Dellupi

Politecnico di Milano, Milano, Italy

Paper No. 97-GT-070, pp. V004T14A013; 6 pages
  • ASME 1997 International Gas Turbine and Aeroengine Congress and Exhibition
  • Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award
  • Orlando, Florida, USA, June 2–5, 1997
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7871-2
  • Copyright © 1997 by ASME


The main differences in the calculated behaviour of an unbalanced rotor on two-lobe oil film bearings, in terms of mean statical position, 1 × rev. and 2 × rev. components in steady-state conditions, between the results obtained by means of the linearized and the non linear oil film models are shown.

The errors introduced by the linearized model are not negligible and can affect significantly the accuracy of results of numerical simulations. This may be unacceptable if one uses the measured vibrations in the bearings for identifying the exciting forces on the rotor in a model based diagnostic approach.

Therefore a method is presented which utilises the linear model of the rotor and the non linear oil-film forces in the identification procedure.

Copyright © 1997 by ASME
Topics: Bearings
This article is only available in the PDF format.



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