Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
BALANCING OF ROTATING MACHINES USING A KRIGING META-MODEL
Submission Author:
Vinícius Carvalho , MG , Brazil
Co-Authors:
Vinícius Carvalho, Leonardo Sicchieri, Marcus Filipe Sousa Reis, Aldemir Ap Cavalini Jr, Valder Steffen Jr
Presenter: Marcus Filipe Sousa Reis
doi://10.26678/ABCM.COBEM2019.COB2019-0710
Abstract
Unbalance is one of the most common malfunctions affecting rotating machines in the context of industrial plants. It is a phenomenon that can lead to high vibration amplitudes resulting in the fatigue of rotor elements. Different approaches have been proposed to solve unbalance problems, such as the so-called influence coefficient method, modal balancing, and four-run without phase. This paper presents an alternative balancing methodology for rotating machines, aiming at overcoming the time limitation faced by the most frequently used methods. This alternative technique uses a surrogate model to balance the rotating machine. In this case, several scenarios are created to simulated possible unbalance conditions of the rotating machine and the corresponding vibration responses are collected to create a Kriging surrogate model. In the present contribution, the unbalance conditions were created using the Monte Carlo simulation based on a uniform field. The numerical investigation was applied in a rotor composed by a horizontal flexible shaft, two rigid discs, and two self-alignment ball bearings. The results indicate the effectiveness of the proposed technique.
Keywords
rotating machines, Balancing techniques, Kriging meta-model, Monte Carlo simulations
