Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
EXPERIMENTAL VALIDATION OF AN ONBOARD ROTOR FEM MODEL
Submission Author:
Marcelo Samora Sousa Jr , MG
Co-Authors:
Vergílio Torezan Silingardi Del Claro, Aldemir Ap Cavalini Jr, Valder Steffen Jr, Marcelo Samora Sousa Jr
Presenter: Marcelo Samora Sousa Jr
doi://10.26678/ABCM.COBEM2017.COB17-1956
Abstract
This paper presents the experimental validation of a rotating machine finite element model (FE model) subject to base excitation and unbalance force, simultaneously. The mathematical model of the rotor is based on the Timoshenko´s beam theory, considering in its formulation the strain and kinetic energies of the shaft, and the kinetic energy associated with the discs and mass unbalance. Some simplifications are adopted to obtain the vibration responses of the considered rotor system, which is composed by a horizontal flexible shaft, one rigid disc, and two self-alignment ball bearings. Therefore, the proposed analysis is performed both in time and frequency domains, as illustrated by the orbits, unbalance responses, and Campbell diagram of the rotating machine. Finally, this study illustrates the main dynamic phenomena associated with onboard rotor systems.
Keywords
onboard rotors, FEM model, vibration responses
