Počet záznamů: 1
Optimization of Control Parameters of Magnetorheological Squeeze Film Dampers to Minimize the Vibration Amplitude of Rotors Passing the Critical Speed
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SYSNO ASEP 0578112 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Optimization of Control Parameters of Magnetorheological Squeeze Film Dampers to Minimize the Vibration Amplitude of Rotors Passing the Critical Speed Tvůrce(i) Zapoměl, Jaroslav (UT-L) RID, ORCID
Ferfecki, P. (CZ)
Molčan, M. (SK)Celkový počet autorů 3 Číslo článku 6905 Zdroj.dok. Applied Sciences-Basel. - : MDPI
Roč. 13, č. 12 (2023)Poč.str. 16 s. Forma vydání Online - E Jazyk dok. eng - angličtina Země vyd. CH - Švýcarsko Klíč. slova accelerating rotors ; rotors oscillation ; magnetorheological squeeze film dampers ; the damping control ; optimization of the control parameters ; evolution optimization method Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics Způsob publikování Open access Institucionální podpora UT-L - RVO:61388998 UT WOS 001014088500001 EID SCOPUS 85163994039 DOI 10.3390/app13126905 Anotace Rotors are often coupled with a stationary part by rolling element bearings. To suppress their excessive vibration, the bearings are inserted in squeeze film dampers. The control of damping in the support elements offers the possibility to minimize the oscillation amplitude of accelerating or decelerating rotors, passing the regions of critical speeds. The controllable damping effect can be achieved if the squeeze film dampers are lubricated with magnetorheological oil. The change in the applied current feeding the electric coil changes magnetic induction in the damper gap, which changes the oil damping properties. The minimum vibration amplitude of the rotor running up or down through the resonance area is accomplished if the current increase or decrease is not sudden, but if it is distributed in some time interval. This article concentrates on determination of the optimum parameters of this manipulation. The developed procedure leads to solving an unconstrained optimization problem with the implicit objective function. The evolution method was used for its solving. In the investigated case, the proposed procedure made it possible to reduce maximum vibration amplitude by about 40% compared with the uncontrolled current decrease. The main contribution of the conducted research work is presentation of a new and original procedure for controlling the damping effect in the rotor supports. It provides a new idea to the designers and engineers regarding how to minimize amplitude of the rotor vibration when passing the critical speed. In addition, the article points to a new area of utilization of controllable magnetorheological squeeze film dampers. 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 2024 Elektronická adresa https://www.mdpi.com/2076-3417/13/12/6905
Počet záznamů: 1