MATEC Web Conf.
Volume 148, 2018International Conference on Engineering Vibration (ICoEV 2017)
|Number of page(s)||6|
|Section||Modelling, Methodologies and Engineering Applications of Nonlinear Dynamical Systems|
|Published online||02 February 2018|
Dynamic behaviour of rotors supported by fluid-film bearings operated close to fluid-induced instability
Department of Mechanics, University of West Bohemia, Czech Republic
This paper is focused on an analysis of rotating systems with fluid-film bearings, especially on their nonlinear behaviour in the course of developing fluid-induced instability. The studied system consists of Jeffcott rotor supported by a fluid-film bearing characterised by the Reynolds equation. The steady state response of the system is investigated by means of an approximate analytical solution of the Reynolds equation while the transient response of the system is investigated using a complex numerical solution. Results suggest that the rotor exercise a bounded chaotic motion if it becomes unstable. If the fluid-induced instability further develops, the motion actually becomes less chaotic and can be characterised as quasi-periodic.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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