Engineering Mechanics

International Conference

Proceedings Vol. 25 (2019)


ENGINEERING MECHANICS 2019

25th INTERNATIONAL CONFERENCE
May 13 – 16, 2019, Svratka, Czech Republic
;
Editors: Igor Zolotarev and Vojtěch Radolf

Copyright © 2019 Institute of Thermomechanics of the Czech Academy of Sciences, Prague

ISBN 978-80-87012-71-0 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

STABILITY OF SYNCHRONOUS VIBRATION OF RIGID ROTORS MOUNTED IN MAGNETICALLY SENSITIVE SUPPORT ELEMENTS
Zapoměl J., Ferfecki J., Kozánek J.:
pages 419 - 422, full text

The optimum design and function of some rotating machines may require to mount the rotors in hydrodynamic bearings. To prevent excitation of non-synchronous vibration of large amplitude, the bearings are inserted in squeeze film dampers. To achieve their optimum performance in a wide range of running speeds their damping effect should be controllable. This is offered by dampers lubricated by magnetically sensitive oils. The needs of control the damping lead to the proposal and study of a new support element consisting of a hydrodynamic bearing and a magnetorheological squeeze film damper. The results of computational simulations show that from the point of view of vibration mitigation, minimization of the force transmitted to the stationary part and stability of synchronous oscillation of rigid rotors application of the studied support element provides better technological parameters in comparsion with the design variant when the rotors are mounted only in hydrodynamic bearings.


back to list of papers

Ownership of copyright in original research articles remains with the Authors, and provided that, when reproducing parts of the contribution, the Authors acknowledge and/or reference the Proceedings, the Authors do not need to seek permission for re-use of their material.

All papers were reviewed by members of the scientific committee.


Publication Ethics - Ethical guidelines for publication
Webmaster contact: admin@it.cas.cz

imce   Powered by Imce 3.20  © 2023, Pavel Formánek, Institute of Thermomechanics AS CR, v.v.i. [generated: 0.0299s]