Experimental investigation of vibration control of flexible rotors using shape memory alloys

Vibration is an essential subject for the design of rotordynamic systems, being responsible for compromising the integrity and causing risks to operational functioning. This work deals with an experimental investigation of the semi-active vibration controller for a rotordynamic system using shape memory alloy (SMA) elements. SMAs are smart materials that present thermomechanical coupling represented by solid phase transformations that promote either stiffness change or hysteretic dissipation. In this regard, they are useful in controllers employing thermal actuation from electric current through the Joule effect. This paper presents a proof of concept of a controller using SMA elements. An experimental apparatus is proposed considering a typical rotor system using SMA wires at the bearings. In this regard, proper temperature variations allow the system to cross critical resonant conditions.

Keywords

Shape memory alloys, Rotordynamics, Flexible rotor, Vibration control

Language

English

Citation

PRETO, Eduardo; ABREU, Gustavo Luiz Chagas Manhães de; GONÇALVES, Aparecido Carlos; CHAVARETTE, Fábio Roberto; SAVI, Marcelo Amorim. Experimental investigation of vibration control of flexible rotors using shape memory alloys. Smart Materials and Structures, Bristol, 2024. No prelo.