Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
Evaluation of surrogate models for hydrodynamic forces in journal bearings
Submission Author:
Iago Almeida , PR
Co-Authors:
Iago Almeida, Gregory Bregion Daniel
Presenter: Iago Almeida
doi://10.26678/ABCM.COBEM2021.COB2021-0358
Abstract
The healthy functioning of rotating machines can be associated with the adequate performance of the bearings, due to the significative influence of this component on the rotor’s behavior. In general, the analysis of the dynamic behavior of the lubricating film is performed solving the Reynolds equation by the finite volume method, which has a high computational cost. In this context, this work evaluates the application of surrogate models for hydrodynamic forces in journal bearings, to assure high accuracy and low computational cost in the analysis of rotating systems by finite element method. For that, different surrogate models are investigated in this work, such as linear interpolation, cubic interpolation, spline interpolation and artificial neural network. The results of the rotor orbit in the rotating system using the surrogate models are compared with the results obtained through the finite volume method. The simulations carried out in this work show that the cubic interpolation and spline interpolation have promising results, since they are capable of improving the accuracy with a lower computational cost. Therefore, the results obtained in this work bring scientific contributions related to alternative methods to model the hydrodynamic bearings, aiming to assure a low computational cost and enable its application in real time monitoring systems for rotating machinery.
Keywords
Surrogate models, Journal Bearing, Hydrodynamic forces, Rotordynamics
