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DINAME2019
DINAME2019
Investigation of a Finite Element Rotor Model with Angular Contact Ball Bearings under EHD lubrication.
Submission Author:
Laís Carrer , SP
Co-Authors:
Laís Carrer, Letícia Bizarre, Katia Lucchesi Cavalca Dedini
Presenter: Laís Carrer
doi://10.26678/ABCM.DINAME2019.DIN2019-0054
Abstract
As the need for reducing costs and deadlines of machines project increases, more accurate models are necessary to better predict the behavior of mechanical systems. In this context, the present work aims to modeled a rotor supported in ball bearings with angular contact under Elastohydrodynamic (EHD) lubrication, obtaining stiffness and damping equivalent parameters for each bearing, in axial and radial directions. The dynamic equilibrium of the bearings’ spheres is carried out and used as entry value for the transient multi-level algorithm solution of EHD equations. Moreover, the equivalent coefficients for stiffness and dumping bearing forces are evaluated and introduced in the rotor as reaction forces. The complete rotor system model is developed with a finite element method, using Timoshenko bean theory, and solved in time domain, leading to rotor and bearings response analysis.
Keywords
rotor, Angular Contact, ball bearing, EHD lubrication
