Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
A shell based FEM model for thick walled composite rotors
Submission Author:
Vergílio Torezan Silingardi Del Claro , MG , Brazil
Co-Authors:
Vergílio Torezan Silingardi Del Claro, Paulo Costa Porto de Figueiredo Barbosa, Aldemir Ap Cavalini Jr, Valder Steffen Jr
Presenter: Vergílio Torezan Silingardi Del Claro
doi://10.26678/ABCM.COBEM2017.COB17-2118
Abstract
In the present contribution, a shell based FEM formulation is used in the context of a numerical investigation regarding the dynamic behavior of a free-free composite thick-walled hollow shaft. For this aim, a flexible composite shaft forms the considered system. The mathematical model of the rotor is derived from the FSDT theory developed with additional stiffness terms, in pair with a shell based formulation. Special emphasis is given to the modelling and experimental determination of the modal damping factors. In this study, a convergence procedure is carried out for the adjustment of critical parameters using an optimization procedure comparing the experimental and numerical FRFs to obtain a representative model for the rotor system. In addition, another objective of this study is the development of a straightforward strategy for the determination of the physical properties of mechanical components as, based on inverse problem approach through optimization techniques. Finally, the present study discusses the convenience of composite hollow shafts for rotor dynamics applications.
Keywords
Composites, Rotordynamics, finite elements method, shell finite element, composite shafts
