Linearized steady-state response of rotors excited by imbalance of the rotating parts taking into account a turbulent flow in journal bearings

• Autorzy: Zapomel J.
• Konferencja: Modelling and optimization of physical systems/International Seminar of Applied Mechanics (9 ; 27.05-29.05.2005 ; Wisła, Polska)
• Języki publikacji: EN

Abstrakty

EN

The described method represents an approach to investigation of a steady-state component of vibration of rotors supported by hydrodynamical bearings that are excited by imbalance of the rotating parts. Its advantage is that it makes possible to incorporate influence of the transient and turbulent flow in the oil layer into the computational models. Modification of the correction coefficients calculated according to Constantinescu gives results that from the physical point of view correspond better to the character of flow in the transition area.

Słowa kluczowe

EN

hydrodynamical bearing; dynamical analysis; rotor vibration

PL

łożysko hydrodynamiczne; analiza dynamiczna; drgania wirnika

• Wydawca: Wydawnictwo Katedry Mechaniki Stosowanej
• Czasopismo: Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska
• Rocznik: 2005
• Tom: z. 28
• Strony: 147--154
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Zapomel J.

• Department of Mechanics, VSB-Technical University of Ostrava,

Bibliografia

• [1] Szeri A.Z.: Tribology : Friction, Lubrication, and Wear, Washington, London, 1980.
• [2] Hirs G.G.: A bulk-flow theory for turbulence in lubricant films, ASME Journal fo Lubrication Technology, April 1973, pp.137-146.
• [3] Childs D.: Turbomachinery Rotordynamics. Phenomena, ModeUng, and Analysis, John Wiley & Sons Ltd., New York, 1993.
• [4] Zeidan F.Y., Vance J.M.: Cavitation regimes in squeeze film dampers and their effect on the pressure distribution, STLE Tribology Transactions, vol.33, no.3, 1990, pp.447-453.
• [5] Lahmar M., Haddad A., Nicolas D.: An optimised short bearing theory for nonlinear dynamic analysis of turbulent journal bearings, Eur. J. Mech.A/Solids 19, 2000, pp.151-177.