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Nonlinear Simulation Analysis and Experiment of Fluid Plain Journal Bearing With Incompressible Fluid

[+] Author Affiliations
Katsuhisa Fujita, Atsuhiko Shintani, Koji Yoshioka, Kouhei Okuno, Hiroaki Tanaka

Osaka Prefecture University, Osaka, Japan

Yasuhiro Asaida, Hiroaki Saito

Matsushita Electric Industrial, Osaka, Japan

Paper No. DETC2003/VIB-48415, pp. 947-954; 8 pages
  • ASME 2003 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C
  • Chicago, Illinois, USA, September 2–6, 2003
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 0-7918-3703-3 | eISBN: 0-7918-3698-3
  • Copyright © 2003 by ASME


Recently, in many areas such as computers and information equipments etc., the fluid journal bearings are required to rotate at higher speed. To satisfy this requirement, the strictly stability analysis of the journal is indispensable. In this paper, we investigate the stability analysis of the dynamic behavior of the fluid plain journal bearing with an incompressible fluid considering the nonlinear terms of fluid forces. The stability analysis is examined by the numerical simulations on each model of a rigid rotor and a flexible rotor. The stable regions by nonlinear analysis are compared with the regions by classical linear analysis. Performing the nonlinear simulation analysis, it becomes clear that there is rather a stable region which amplitude does not grow up abruptly, and this phenomenon can not only be pointed out, but also is judged to be unstable by linear stable analysis. Finally, the experiment using actual bearings is performed and compared with the numerical results.

Copyright © 2003 by ASME



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