Contact problems in rotor systems

Liudmila Banakh1

1Mechanical Engineering Research Institute of RAS, Moscow, Russia

1Corresponding author

Vibroengineering PROCEDIA, Vol. 8, 2016, p. 90-96.
Received 18 July 2016; accepted 24 August 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.

We consider the contact problems during rotor rotation at its contacting with elements of the rotor system. The two different situations are considered: a) the rotor contact with fixed stator b) the rotor contact with light movable elements (sealing rings, elastic supports, etc.). The following motion regimes are studied: rolling rotor on the stator, vibro-impact regimes, and oscillations as hula-hoop type at contact with light elements. For these cases, we obtain a solution in analytical view, which enable to find the general laws inherent in these problems. In particular, it was found: the velocity of steady rolling close to the natural frequency of the rotor system; it was proved the occurrence of two-impact mode at anisotropy of the stator elements. Also the experimental results are given.

Keywords: rotor, contact, stator, rolling, ring, vibro-impact, hula-hoop.

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