000001962 001__ 1962
000001962 005__ 20141118153448.0
000001962 04107 $$acze
000001962 046__ $$k2011-05-09
000001962 100__ $$aSikora, R.
000001962 24500 $$aINFLUENCE OF PERTURBATION ON OILWHIRL PHENOMENON GENESIS 

000001962 24630 $$n17.$$pEngineering Mechanics 2011
000001962 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Brno
000001962 506__ $$arestricted
000001962 520__ $$2eng$$aIn this paper is surveyed the influence of the perturbation using model RK4. The perturbation was induced by centrifugal force. The measurement was made to evaluate influences of the single factors for future including to the mathematical model. There were used various combination of shaft speed and perturbation speed and the vibration spectra were recorded. It was found that the perturbation caused by even a small amplitude of centrifugal force could cause the very dangerous "oilwhirl vibration" even if the amplitude of vibration developed by perturbation itself is low. The simplified mathematical model suggested by Muszynska does not response the situation. This model was not in agreement with measured data. Another mathematical model should be used.

000001962 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000001962 653__ $$aOilwhirl, perturbation, threshold, spectra.

000001962 7112_ $$aEngineering Mechanics 2011$$cSvratka (CZ)$$d2011-05-09 / 2011-05-12$$gEM2011
000001962 720__ $$aSikora, R.$$iSzweda, J.$$iPoruba, Z.
000001962 8560_ $$ffischerc@itam.cas.cz
000001962 8564_ $$s893141$$uhttp://invenio.itam.cas.cz/record/1962/files/p124.pdf$$y
             Original version of the author's contribution as presented on book, page 535.
            
000001962 962__ $$r1835
000001962 980__ $$aPAPER