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https://doi.org/10.21278/TOF.451017220

Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness

Shengyuan Li   ORCID icon orcid.org/0000-0002-7778-3766 ; School of Power and Energy, Northwestern Polytechnical University, Xi’an, China
Longxi Zheng ; School of Power and Energy, Northwestern Polytechnical University, Xi’an, China

Puni tekst: engleski, pdf (4 MB) str. 129-144 preuzimanja: 60* citiraj
APA 6th Edition
Li, S. i Zheng, L. (2021). Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness. Transactions of FAMENA, 45 (1), 129-144. https://doi.org/10.21278/TOF.451017220
MLA 8th Edition
Li, Shengyuan i Longxi Zheng. "Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness." Transactions of FAMENA, vol. 45, br. 1, 2021, str. 129-144. https://doi.org/10.21278/TOF.451017220. Citirano 24.06.2021.
Chicago 17th Edition
Li, Shengyuan i Longxi Zheng. "Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness." Transactions of FAMENA 45, br. 1 (2021): 129-144. https://doi.org/10.21278/TOF.451017220
Harvard
Li, S., i Zheng, L. (2021). 'Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness', Transactions of FAMENA, 45(1), str. 129-144. https://doi.org/10.21278/TOF.451017220
Vancouver
Li S, Zheng L. Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness. Transactions of FAMENA [Internet]. 2021 [pristupljeno 24.06.2021.];45(1):129-144. https://doi.org/10.21278/TOF.451017220
IEEE
S. Li i L. Zheng, "Vibration Attenuation Mechanism of the Rotor System with Anisotropic Support Stiffness", Transactions of FAMENA, vol.45, br. 1, str. 129-144, 2021. [Online]. https://doi.org/10.21278/TOF.451017220

Sažetak
Using the one-dimensional finite element method, the dynamic behaviour of a double-disk rotor system with anisotropic supports is studied in this paper. First, the natural frequencies, whirl state and unbalance response of the rotor system are analysed. Then, the vibration attenuation mechanism of the rotor system under the effect of bearing damping and accelerating rotor is discussed in detail. The research results show that stiffness anisotropy makes natural frequency lines of the rotor system tend to diverge from each other. The damping in bearings not only decreases the amplitude of forward and backward whirls but also reduces the spin speed range of backward whirl. The whirl orbit of the rotor system approximates a straight line at the spin speeds near the critical point of the backward and forward whirls. For the unbalance response of the rotor system with anisotropic supports, the forward natural frequency dominates in the direction of the strong stiffness axis, while the unbalance response in the direction of the weak stiffness axis is mainly affected by the backward natural frequency. Increasing the run-up acceleration can decrease the amplitude of backward and forward whirls, but it cannot reduce the spin speed range of backward whirl.

Ključne riječi
rotor system; anisotropic supports; vibration attenuation mechanism; bearing damping; accelerating rotor

Hrčak ID: 256270

URI
https://hrcak.srce.hr/256270

Posjeta: 120 *