Conference article

Modelling of Oil Film Bearings

Tatsuro Ishibashi
Meidensha Corporation, Japan

Tadao Kawai
Department of Mechanical & Physical Engineering, Osaka City University, Japan

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Published in: Proceedings of the 2nd Japanese Modelica Conference, Tokyo, Japan, May 17-18, 2018

Linköping Electronic Conference Proceedings 148:16, p. 115-121

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Published: 2019-02-21

ISBN: 978-91-7685-266-8

ISSN: 1650-3686 (print), 1650-3740 (online)


In this paper, we model the oil film bearings and estimate the fluid-induced instability for the design and the diagnosis of the rotating machinery system. The presented model is implemented in our original rotating machinery library by Modelica. An example of a Jeffcott rotor system supported by plain circular journal bearings is simulated. To check the behavior of the model, Campbell diagrams and stability maps are computed by using the Modelica_LinearSystems2 library.


Rotor Dynamics, Oil Whirl, Oil Whip, Campbell Diagram, Stability Map


Marcus Baur, Martin Otter and Bernhard Thiele. Modelica Libraries for Linear Control Systems. Proceedings of the 7th International Modelica Conference, 2009. doi: 10.3384/ecp09430068.

Yukio Hori and Koji Kato. Studies on tribology. Proceedings of the Japan Academy, Series B, 84(8): 287–320, 2008.

Tatsuro Ishibashi, Han Bing and Tadao Kawai. Rotating Machinery Library for Diagnosis. Proceedings of the 12th International Modelica Conference, 2017. doi:10.3384/ecp17132381.

Yukio Ishida and Toshio Yamamoto. Linear and Nonlinear Rotordynamics: A Modern Treatment with Applications, 2nd Edition. Wiley-VCH, 2012.

Osami Matsushita, Masato Tanaka, Hiroshi Kanki, Masao Kobayashi and Patrick Keogh. Vibrations of Rotating Machinery. Springer Japan. 2017. doi: 10.1007/978-4-431-55456-1.

Martin Otter. The LinearSystems library for continuous and discrete control systems. Proceedings of the 5th International Modelica Conference, 2006. URL

Tsuneo Someya. Journal-Bearing Databook. Springer-Verlag Berlin Heidelberg. 1989. doi: 10.1007/978-3-642-52509-4.

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