Eventos Anais de eventos
DINAME2019
DINAME2019
Chaos Control of a Smart Structure Using SMA Elements and Constrained Actuation
Submission Author:
Dimitri Danulussi Alves Costa , SP
Co-Authors:
Dimitri Danulussi Alves Costa, Aline Souza de Paula, Marcelo Savi
Presenter: Marcelo Savi
doi://10.26678/ABCM.DINAME2019.DIN2019-0082
Abstract
Shape memory alloys (SMAs) have been widely used in the smart structures creating adaptive behaviour that is interesting for several engineering applications. SMA thermomechanical behaviour can provide vibration attenuation or maintain the structure on a desired dynamical response. The two bar truss is an archetypal model to represent smart structures being investigated in this paper. Delayed feedback control method is employed providing low power consumption control that is able either to stabilize unstable periodic orbits or to promote bifurcation control. Thermal constraints are investigated, showing the real possibilities of this kind of control. Ideal and constrained thermal actuators are implemented via the SMA elements on the structure. Numerical results show situations related to controller constraints, defining its range of applicability.
Keywords
Chaos Control, Shape Memory Alloy, non-linear dynamics
