Počet záznamů: 1
A computational investigation on the reducing lateral vibration of rotors with rolling-element bearings passing through critical speeds by means of tuning the stiffness of the system supports
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SYSNO ASEP 0368079 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název A computational investigation on the reducing lateral vibration of rotors with rolling-element bearings passing through critical speeds by means of tuning the stiffness of the system supports Tvůrce(i) Zapoměl, Jaroslav (UT-L) RID, ORCID
Ferfecki, Petr (UT-L) RIDCelkový počet autorů 2 Zdroj.dok. Mechanism and Machine Theory. - : Elsevier - ISSN 0094-114X
Roč. 46, č. 5 (2011), s. 707-724Poč.str. 18 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova accelerating rotors ; critical speeds ; tuning of the stiffness of the rotor supports Vědní obor RIV JR - Ostatní strojírenství CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000287473700010 DOI 10.1016/j.mechmachtheory.2010.12.006 Anotace Since there are manufacturing and assembling inaccuracies rotors are always slightly imbalanced. Their rapid angular acceleration leads to an increase in the magnitude of the tangential component of the imbalance forces. The frequency tuning achieved by changing the stiffness of the rotor supports represents one approach to its attenuation. Stiffness decreases shortly before reaching the critical speed, and after crossover, the stiffness increases again. As almost all publications and computer procedures from the field of rotor dynamics deal only with the case when the rotor turns at a constant angular speed, derivation of the equations of motion of the rotor rotating at variable velocities and investigation of the operating conditions and individual parameters of the supports on the vibration of the rotor passing critical speeds represent the fully new contribution of this paper. To solve the equations of motion the Newmark method has been proposed and tested. 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 2012 Elektronická adresa http://www.sciencedirect.com/science/article/pii/S0094114X10002314
Počet záznamů: 1