Forced oscillation of an unbalanced rotor in nonisotropic bearings

Authors

  • Inna A. Pasynkova St.Petersburg State University, Universitetskaya nab., 7/9, St.Petersburg, 199034, Russian Federation;

Abstract

An influence of bearings anisotropy on forced oscillation of an unbalanced rotor with four degrees of freedom was considered. Two cases of the rotor mounting on the rigid shaft and on the flexible one were thoroughly examinated. The differential equations of the rotor rotation were obtained in complex variables. The exact solution of the system was found. Appearance of the additional critical frequencies especially in the bottom part of the spectrum was shown. The dynamic responses and the elliptical trajectories of the shaft’s ends were obtained It was also shown that the direct and reverse whirling motion could be realized. Refs 7. Figs 6.

Keywords:

rotor dynamics, direct whirling, reverse whirling, anisotropy of bearings

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Published

2014-05-01

How to Cite

Pasynkova, I. A. (2014). Forced oscillation of an unbalanced rotor in nonisotropic bearings. Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy, 1(2), 292–302. Retrieved from https://math-mech-astr-journal.spbu.ru/article/view/11055

Issue

Vol. 1 No. 2 (2014)

Section

Mechanics

License

Articles of "Vestnik of Saint Petersburg University. Mathematics. Mechanics. Astronomy" are open access distributed under the terms of the License Agreement with Saint Petersburg State University, which permits to the authors unrestricted distribution and self-archiving free of charge.