DYNAMIC BEHAVIOR OF A ROTATING COMPOSITE HOLLOW SHAFT
Bruno R M G Silva1; Thiago A M Guimarães1; Aldemir Ap Cavalini Jr1; Valder Steffen Jr1
1 Federal University of Uberlândia
Baixar PDF doi:10.20906/CPS/CILAMCE2015-0177
Resumo
In this paper, a simplified homogenized beam theory (SHBT) is used in a preliminary numerical investigation regarding the dynamic behavior of a rotating composite hollow shaft. A horizontal flexible composite hollow shaft and a rigid disc compose the simple supported rotating system that is considered in the present contribution. The mathematical model of the rotor is derived from the Lagrange's equation and the Rayleigh-Ritz method, which is obtained by considering the strain and kinetic energies of the disc and hollow shaft, and the mass unbalance. Some simplifications are adopted in order to obtain the responses of the considered rotor system. Therefore, the proposed analysis is confined to the time and frequency domains. The orbits, unbalance responses, and Campbell diagram are determined for evaluating the dynamic responses. Further research efforts will be dedicated to additional numerical tests considering a finite element model and more sophisticated theories for the modeling of the rotating composite hollow shaft.
Palavras-chave: rotor system; composite shaft; simplified rotor model; vibration responses; Campbell diagram