BACKWARD WHIRL OF UNBALANCED SHAFT AT ELASTICALLY CONSTRAINED JOURNAL BEARINGS AND FLOATING SEALS DUE TO MECHANICAL CONTACT

Authors

  • Ludmila Banakh Mechanical Engineering Research Institute of Russian Academy of Sciences (RU)
  • Andrey Nikiforov Mechanical Engineering Research Institute of Russian Academy of Sciences (RU)

DOI:

https://doi.org/10.17770/etr2009vol2.1012

Keywords:

contact rotation, dynamics and stability of, high-speed rotor systems

Abstract

The paper deals with the known phenomenon which takes place at rotor-stator contact. It is backward precession (whirl) of unbalanced shaft inside rigidly constrained sleeves (journal bearings) in the range below its critical speed. The purpose of this theoretical work is to research dynamic behavior of unbalanced shaft at the elastically constrained sleeves and above-resonant range.

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References

Banakh L. Some phenomena arising at the rotation of shaft on journal bearings // M.: Mashinovedenie, 1965. No1, p. 5-12.

Bartha A.R.: Dry Friction Induced Backward Whirl: Theory and Experiments, Fifth International IFToMM Conference on Rotor Dynamics, Darmstadt, Germany, 1998. p.755-767.

Keljzon A.S., Tsimansky Yu.P., Yakovlev V.I. Dynamics of rotors on elastically constrained bearings. М.: Nauka, 1982. 280 p.

Martsinkovsky V.A. Clearance seals of rotor machines. M.: Mashinostroenie, 1980. 200 p.

Edwards S., Lees A.W. and Friswell M.I. The Influence of Torsion on Rotor/Stator Contact in Rotating Machinery, Journal of Sound and Vibration, 1999. p. 767-778.

Braut S., Zigulic R., Skoblar A., Stimac G., Butkovic M., Jokic M. Dynamic Analysis of the Rotor-Stator Contact due to Blade Loss. Proc. 12th IFToMM World Congress, Besançon (France), 2007.

Biderman V.L. Calculation on impulsive loads. Handbook of engineering worker. M.: MASHGIZ, 1962. Vol. No3, p. 430-442.

Banakh L., Nikiforov A., Panovko G. Vibroimpact Motion of Rotor taking into account Friction at the Contact. Proc. 6th EUROMECH Nonlinear Dynamics Conference (ENOC 2008), Saint Petersburg (Russia), 2008., online at http://lib.physcon.ru/?item=1605

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Published

2015-08-03

Issue

Vol. 2 (2009): Environment. Technology. Resources. Proceedings of the 7th International Scientific and Practical Conference. Volume 2

Section

VII Mechatronics and environment

How to Cite

[1]
L. Banakh and A. Nikiforov, “BACKWARD WHIRL OF UNBALANCED SHAFT AT ELASTICALLY CONSTRAINED JOURNAL BEARINGS AND FLOATING SEALS DUE TO MECHANICAL CONTACT”, ETR, vol. 2, pp. 234–240, Aug. 2015, doi: 10.17770/etr2009vol2.1012.