Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
Application of active hydrodynamic bearings to reduce whirl effect on rotor
Submission Author:
Douglas Ramos , SP
Co-Authors:
Douglas Ramos, Gregory Bregion Daniel
Presenter: Gregory Bregion Daniel
doi://10.26678/ABCM.DINAME2023.DIN2023-0153
Abstract
Conventional hydrodynamic journal bearings applied to rotating machines are susceptible to some undesired conditions, such as oil whirl effects. To avoid this condition, it is proposed to use the new concept of hydrodynamic bearing, proposed by Ramos and Daniel (2021). This new concept considers the own bearing motion, thus making possible to change the average velocity of the lubricating oil film inside the bearing. The rotor dynamic behavior is initially evaluated for the conventional bearing (without bearing motion). In following, the new bearing is simulated to evaluate the differences in the oil whirl effects. The numerical results show that this new bearing can reduce the oil whirl effects, decreasing the 0.5x component of the FFT.
Keywords
active bearing, Hydrodynamic bearing, Oil whirl
