Engineering Mechanics

International Conference

Proceedings Vol. 10 (2004)


ENGINEERING MECHANICS 2004

NATIONAL CONFERENCE WITH INTERNATIONAL PARTICIPATION
May 10 – 13, 2004, Svratka, Czech Republic
;
Editors: Igor Zolotarev and Alena Poživilová

Copyright © 2004 Institute of Thermomechanics, Academy of Sciences of the Czech Republic, Prague

ISBN 80-85918-88-9 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Some specific features of the rotor dynamic behaviour
Šimek J.
pages 275 - +8p., full text

Increasing operating speed of rotating machines brings more serious problems with rotor dynamics. Rotors supported in sliding bearings exhibit in principle two kinds of instability. While “oil whip” is characteristic for elastic rotors, “oil whirl” type can be encountered first of all on rigid rotors, very often with gas bearings. Some examples of rotor instabilities together with some very specific phenomena, as e.g. subharmonic resonance of the titling-pad bearing pad presented in the paper, were encountered either in real machines or on the test rotors.


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