Naslov
Behaviour of Rotor in Insufficiently Lubricated Plain Bearings with Large Clearances

Autori
Butković, Mirko ; Žigulić, Roberto ; Braut, Sanjin

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 3^rd International Congress of Croatian Society of Mechanics / Pavao Marović - Cavtat : Dubrovnik : Hrvatsko društvo za mehaniku (HDM), 2000, 525-532

Skup
The 3^rd International Congress of Croatian Society of Mechanics,

Mjesto i datum
Dubrovnik, Hrvatska; Cavtat, Hrvatska, 28.09.2000. - 30.09.2000

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Rotor; Insufficient Lubrication; Critical Speeds; FEM

Sažetak
In the paper the critical speeds, as well forced vibrations due unbalance, for the rotor in insufficiently lubricated plain bearings with large clearances are considered. In the theoretical part the linearised model was used. The model was discretised by using the finite elements method. The experimental part was carried out using test rotor and instrumentation for measurements of rotor vibrations. The expression for the calculation of natural frequencies of rotor with clearances in bearing was proposed. The numerically and experimentally obtained natural frequencies were compared in the Campbell’s diagram. Also numerically and measured rotor’s orbits, as well as numerical results of first order excitation and first harmonic tracking measurements were compared. Run down cascade diagrams of the rotor were shown.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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