Nonlinear Dynamics

, Volume 67, Issue 2, pp 1201–1219 | Cite as

Nonlinear dynamics of one disk asymmetrical rotor supported by two journal bearings

Original Paper


Asymmetrical one disk rotor interacting with fluid films of short journal bearings is considered. Gyroscopic moments acting on a disk are taken into account. The forces of the journal bearing fluid film are derived analytically. The system of four nonlinear ordinary differential equations is obtained to study the rotor vibrations. The origination of self-sustained vibrations of rotor is studied by means of Shaw–Pierre nonlinear modes. The harmonic balance method is applied to study the self-sustained vibrations with large amplitudes.


Fluid film Reynolds’ equation Self-sustained vibrations Nonlinear modes Frequency response 


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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  1. 1.Department of Nonstationary Vibrations, Podgorny Institute for Mechanical Engineering ProblemsNational Academy of Sciences of UkraineKharkivUkraine
  2. 2.Department of Gas and Fluid MechanicsNational Technical University “KhPI”KharkivUkraine

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