Effect of the sleeve profile on the stability of rotor operating in multilobe journal bearings

• Autorzy: Strzelecki S.
• Konferencja: Symposium Vibrations In Physical Systems (27 ; 09-13.05.2016 ; Będlewo koło Poznania ; Polska)
• Języki publikacji: EN

Abstrakty

EN

Multilobe journal bearings with the sleeve of the 2-, 3 or 4- sliding lobes of cylindrical profile are applied in different types of rotating machinery. The design of such journal bearings, the number of lobes and oil grooves improves thermal state of bearing at higher speeds and the stability of operation. The paper describes the results of the calculations of dynamic characteristics and determination of stability ranges of simple symmetric rotor operating in the offset types of multilobe journal bearings. The dynamic characteristics of supporting bearings are defined by four stiffness and damping coefficients of oil film. The iterative solution of Reynolds, energy and viscosity equations allows the obtaining of the load capacity of bearings and the required dynamic coefficients of oil film. Adiabatic, laminar oil film and the static equilibrium position of journal were assumed. The oil film pressure, temperature, viscosity fields and the oil film forces were the basis of the bearing dynamic characteristics and stability determination.

Słowa kluczowe

EN

multilobe; offset journal bearings; stability of rotor

PL

łożysko poprzeczne; stateczność wirnika

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2016
• Tom: Vol. 27
• Strony: 339--346
• Opis fizyczny: Bibliogr. 11 poz., rys., wykr.

Twórcy

autor

Strzelecki S.

• Research Development Institute of Textile Machinery “POLMATEX-CENARO”, Wolczańska 55/591/15, 90-924 Lodz, Poland

Bibliografia

• 1. T. Someya, Stabilität einer in zylindrischen Gleitlagern laufenden, unwuchtfreien Welle-Beitrag zur Theorie des instationär belasteten Gleitlagers. Diss. Techn. Universität Karlsruhe 1962.
• 2. D. C. Han, Statische und dynamische Eigenschaften von Gleitlagern bei hohen Umfangsgeschwindigkeiten und bei Verkantung. Diss. Univeristät Karlsruhe 1979.
• 3. J. Glienicke, Feder- und Dämpfungskonstanten von Gleitlagern für Turbomaschinen und deren Einfluß auf das Schwingungsverhalten eines einfachen Rotors. Diss. Techn. Universität Karlsruhe 1962.
• 4. R. Gasch, H. Pfützner, Rotordynamik, Springer-Verlag 1975.
• 5. T. Someya, Journal-Bearing Databook, Springer-Verlag, Berlin, Heidelberg, New York, London, Paris, Tokyo, Heidelberg 1989.
• 6. S. Strzelecki, Stability of rotor operating in offset halves journal bearings, Synopsis. TAE, Technische Akademie Esslingen, Esslingen, Germany, 14-16.01.2008.
• 7. F. Dimofte, Wave Journal Bearing with Compressible Lubricant- Part I: The Wave Bearing Concept and a Comparison to the Plain Circular Bearing, Tribology Transaction, 38 (1995) 153 – 160.
• 8. S. Strzelecki, Effect of geometric parameters on the dynamic characteristics of 3-lobe pericycloid journal bearing, Technical University of Ostrava, Czech Republic, 7–9 September 2005, SESSION 8 - APPLIED MECHANICS 225 – 230.
• 9. S. Strzelecki, H. Kapusta, Dynamic characteristics and stability of 3-lobe offset journal bearing, Machine Dynamics Problems, 30(4) (2006) 131 – 139.
• 10. S. Strzelecki, Stability of elastic rotor operating in 3-lobe journal bearings of different sleeves profile, 7th IFToMM- Conference on Rotor Dynamics, Vienna, Austria, September 25–28, 2006, Paper ID-317 (1 – 10) CD.
• 11. S. Strzelecki, Stability of Jeffcott rotor operating in 4-lobe offset journal bearings, XVI Int. Conference TEMAG 2008, 23–24.10.2008, Ustroń Zawodzie, 263 – 273.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.