Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
LOCALIZATION OF ANISOTROPIC BEARINGS THROUGH THE MODIFICATION OF THE SHAPE AND DIRECTIVITY INDEX (SDI)
Submission Author:
Lucas Rangel de Oliveira , SP
Co-Authors:
Lucas Rangel de Oliveira, Gilberto Pechoto de Melo
Presenter: Lucas Rangel de Oliveira
doi://10.26678/ABCM.COBEM2019.COB2019-0908
Abstract
This work presents the design of an index that assists in locating anisotropic bearings in rotating shafts through the Shape and Directivity Index (SDI) information. The equation of motion of the rotor uses complex notation in order to separate the contributions of the forward and backward whirl modes. By manipulating SDI in the HSV color model, a metric scale, visualized on a color map, is developed to locate the anisotropy caused by anisotropic bearings. Good results demonstrate the efficiency and robustness of the new index for several rotor operation conditions. This damage metric contributes to anisotropy localization methods in rotating systems.
Keywords
rotodynamics, shape and directivity index, complex modal analysis, backward and forward whirl
