Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
Numerical analysis of new superelastic SMA dampers for mechanical vibration control in rotor system
Submission Author:
Richard Senko , PB
Co-Authors:
Carlos Jose de Araujo, MARCELO CAVALCANTI RODRIGUES, Antonio Almeida Silva, Richard Senko
Presenter: Richard Senko
doi://10.26678/ABCM.COBEM2017.COB17-0554
Abstract
Mechanical vibrations in rotor systems can become a serious problem that affects performance. Vibration control in these systems has been well studied in the last years, mainly applying Shape Memory Alloys (SMA) to reduce vibration problems and currently the superelastic behaviour of SMA is being extensively studied and applied. Although designs of SMA dampers devices are not being planned for better distribution of the vibration force. This paper aims to simulate two different types of dampers made of superelastic SMA to mitigate mechanical vibrations in a rotor system. Numerical analysis was carried out with two SMA dampers of different designs. Experimental data of an unbalanced rotor system were employed to simulate the strain behaviour in these new types of dampers. The damper designed with a larger contact area with the rotor shaft showed better behaviour for the phase transformation of the SMA, making it possible to reduce the mechanical vibration of the system.
Keywords
Rotor Systems, Shape Memory Alloys, Dampers, mechanical vibrations, Superelasticity.
