Comparation of vibration supression of flexilble rotors supported by passive and controllable constraint elements during passing their critical speeds

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F12%3A86084660" target="_blank" >RIV/61989100:27230/12:86084660 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Comparation of vibration supression of flexilble rotors supported by passive and controllable constraint elements during passing their critical speeds
Original language description
Lateral vibration of rotating machines can be significantly reduced if damping devices are added to the constraint elements coupling the rotor and its casing. To achieve their optimum performance their damping effect must be controllable. The proposed constraint element is equipped with an electric coil generating magnetic field. It works on the principle of squeezing two concentric films formed by normal and magnetorheological oils. As the flow of the magnetorheological liquid depends on magnetic induction, the change of electric current can be used to control the damping force. The computational simulations proved that the proposed constraint element enabled to minimize the rotor vibration in the whole extent of the running velocities in contrast toapplication of normal (uncontrollable) squeeze film dampers frequently used to vibration reduction of rotating machines.
Czech name
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Czech description
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Project
<a href="/en/project/GAP101%2F10%2F0209" target="_blank" >GAP101/10/0209: Research and modelling of the effect of control of yielding stress of magnetorheological liquid in a thin lubricating film on vibration of rotors</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Proceedings of the 25th Nordic Seminar on Computational Mechanics : Lund, 25-26 October, 2012
ISBN
978-91-7473-456-0
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
245-248
Publisher name
Lunds universitet
Place of publication
Lund
Event location
Lund
Event date
Oct 25, 2012
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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