Počet záznamů: 1
Effect of the controllable support elements lubricated by magnetically sensitive fluids on chaotic and regular vibration of flexible rotors during rubbing
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SYSNO ASEP 0536136 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effect of the controllable support elements lubricated by magnetically sensitive fluids on chaotic and regular vibration of flexible rotors during rubbing Tvůrce(i) Zapoměl, Jaroslav (UT-L) RID, ORCID
Ferfecki, P. (CZ)
Kozánek, Jan (UT-L) RIDCelkový počet autorů 3 Číslo článku 104096 Zdroj.dok. Mechanism and Machine Theory. - : Elsevier - ISSN 0094-114X
Roč. 155, January (2021)Poč.str. 11 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova flexible rotors ; magnetically controllable rotor support element ; rotor rubbing ; regular and chaotic rotor vibration Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics CEP LQ1602 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Způsob publikování Omezený přístup Institucionální podpora UT-L - RVO:61388998 UT WOS 000596772200007 EID SCOPUS 85091675240 DOI 10.1016/j.mechmachtheory.2020.104096 Anotace The proposed new rotor support element consists of a hydrodynamic bearing and a magnetorheological squeeze film damper. The damping is controlled by the change of resistance against the flow of magnetorheological fluid due to action of a magnetic field generated by electric current powering the electric coils. This paper deals with the study of the effect of the proposed support element on character of the rotor vibration during rubbing when impacts between the disc and the walls of a hole of square shape in the stationary part are induced. The system is excited by the rotor unbalance. The goal of the analysis is to investigate the effect of the applied current generating magnetic field on regularity of the rotor vibration. The results of the simulations show that the character of the vibration depends on speed of the rotor rotation and application of the current of right magnitude can change irregular oscillation into periodic and reduce magnitude of the impact forces. The proposed support element makes it possible to utilize all advantages of hydrodynamic bearings. The control of the damping effect is very simple as the damper can work only in the on/off regime. The performed study contributes to learning more on the design possibilities of suppression of undesirable phenomena induced by the rotor rubbing. Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2022 Elektronická adresa https://www.sciencedirect.com/science/article/pii/S0094114X20303153?via%3Dihub
Počet záznamů: 1