INFLUENCE OF STATIC AND DYNAMIC IMBALANCE ON VIBRATIONS OF THE CENTRIFUGE SHAFT WITH GYROSCOPIC EFFECT

Authors

  • А. Є. Бабенко National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv, Ukraine
  • Я. І. Лавренко National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv,
  • М. М. Куренков National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv,

DOI:

https://doi.org/10.20535/2305-9001.2014.70.35249

Keywords:

Vibrations, own frequence, static imbalance, dynamic imbalance, gyroscopic effects, the centrifuge

Abstract

Purpose. Definition of influence static and dynamic unbalance with gyroscopic effect on vibrations of a laboratory centrifuge.

Design/methodology/approach. Vibrations take into account six degrees of freedom. The model of a gyroscope accepted in article is calculated on its use at the solution of a number of applied tasks.

Findings. When static and dynamic unbalance considered, the amplitudes have discontinuity when the frequency coincides with the rotation own oscillation frequency.

Originality/value. This research was important and original in field of vibrations of medical machines, which usually work with high values of frequences. It shows changes of amplitudes depending on work  frequence. It can help to avoid a resonance during operation.

Author Biography

А. Є. Бабенко, National Technical University of Ukraine «Kyiv Polytechnic Institute», Kyiv

д.т.н., проф.

References

Bakaeva L.S., Suevalova L.А. Static and dynamic balancing of rotating parts of machines and mechanisms, Habarovsk, Publisher PNU 2008, 2p.

Babenko А., Lavrenko Ia., Kurenkov М. Journal of Mechanical Engineering of the National Technical University of Ukraine “Kyiv Politechnic Institute”, 2013, no 65, pp. 166-174.

Babenko А.Е., Lavrenko Ia.I., Kurenkov M.M. Fluctuations centrifuge with gyroscopic effect. All-university Scientific Conference of Young Scientists and Students section "Mechanical Engineering 2014". Kiev, 2014, p.10-11.

Zeytman M.F. Kushul M.J. Yzhybnye kolebaniya vertykalnyh rotorov v hravytatsyonnom pole [Vertical bending vibrations of rotors in a gravitational field]. Mashynovedenye, 1968, № 5;

Maunder L. Sobstvennye chastoty kolebanij svobodnogo giroskopa s uprugim valom, ustanovlennogo v kardanovom podvese [Natural frequencies of the free gyroscope with elastic shaft mounted in gimbals]. Mechanics, Sat. Trans. and obz. foreign lang. period. lit., 1961, № 5 (69).

Published

2014-12-22

Issue

Section

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