Hydrodynamic effects influence on lateral vibrations of rigid symmetric rotor with fluid-film bearings

Leonid Savin1 , Sergey Majorov2 , Alexey Kornaev3

1, 2, 3Orel State University, Orel, Russia

2Corresponding author

Vibroengineering PROCEDIA, Vol. 8, 2016, p. 322-327.
Received 7 September 2016; accepted 12 September 2016; published 7 October 2016

Copyright © 2016 JVE International Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Abstract.

The paper covers the questions of modeling and research different hydrodynamic effects, that influence the occurrence of lateral vibrations in rotor systems with fluid-film bearings. The present research is aimed at developing rotor dynamics as one of the fields of science, as well as at developing the analysis and diagnostics methods of the dynamic condition of the rotor systems with fluid-film bearings. The results of the present research consist of a complex of the developed mathematical models and the numerical methods of solutions for centering and Magnus effects in fluid-film bearing and its influence on dynamics of rotor system. The significance of the results is determined by a wide range of applications in various designs of single-shaft rotor systems. The novelty of the obtained results is in the developed mathematical models that allow solving the analysis problems of lateral vibrations in the rotor systems with fluid-film bearings, given a nonlinear formulation of the problem; which significantly broadens the spectrum of the analyzed parameters domain.

Keywords: rotor system, fluid-film bearing, rotordynamics, hydrodynamic lubrication theory, computational hydrodynamics.

Acknowledgements

This work was partly supported by an RSF Grant, Project 16-16-00186 “Planning of Optimal Energy Efficient Trajectories of Rotors in Mechatronic Modules in Complex Rheology Media”.

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