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

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Abstract

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.

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Authors and Affiliations

  1. Department of Nonstationary Vibrations, Podgorny Institute for Mechanical Engineering Problems, National Academy of Sciences of Ukraine, 2/10 Dm. Pozharskoho St., 61046, Kharkiv, Ukraine

    K. V. Avramov

  2. Department of Gas and Fluid Mechanics, National Technical University “KhPI”, Frunze St. 21, Kharkiv, 61002, Ukraine

    O. V. Borysiuk

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  1. K. V. Avramov
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  2. O. V. Borysiuk
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Correspondence to K. V. Avramov.

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Avramov, K.V., Borysiuk, O.V. Nonlinear dynamics of one disk asymmetrical rotor supported by two journal bearings. Nonlinear Dyn 67, 1201–1219 (2012). https://doi.org/10.1007/s11071-011-0063-x

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  • DOI: https://doi.org/10.1007/s11071-011-0063-x

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