Eventos Anais de eventos
DINAME 2023
XIX International Symposium on Dynamic Problems of Mechanics
A Synergistic Vibration Absorber using Magnetorheological and Shape Memory Alloy
Submission Author:
Alberto Paiva , RJ , Brazil
Co-Authors:
Estefanio Teixeira, Alex Brandão, Alberto Paiva, Marcelo Savi
Presenter: Alberto Paiva
doi://10.26678/ABCM.DINAME2023.DIN2023-0053
Abstract
Smart materials represent an alternative technology for solving engineering problems that demand either an autonomous performance or an adaptive behavior. Regarding this, the target of this work is to model and numerically simulate a passive-adaptive vibration absorber system, containing two degrees of freedom – one related to a shape memory alloy (SMA) primary system to be controlled; and a secondary actuator system composed by a magnetorheological (MR) damper that can be tuned by an electric current. In order to describe smart material behaviors, a polynomial constitutive model is used for SMA and Bouc-Wen model is adopted for the MR damper. Numerical simulations are performed employing the fourth order Runge-Kutta method. A multiparametric analysis is carried out by means of parameter spaces varying the excitation quantities, SMA temperature and the MR electric current. Results attest the absorber capacity of modifying the primary system dynamical pattern, enabling both passive and active control.
Keywords
Passive-adaptative absorber, magnetorheological damper, Shape Memory Alloy, nonlinear dynamics
