Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
OPTIMIZATION OF PASSIVE VIBRATION CONTROL SYSTEM APPLIED IN STRUCTURAL MODEL INCORPORATING SMA-SE COIL SPRINGS ASSOCIATED WITH TMD
Submission Author:
Carlos Heitor de Andrade Lustosa , PB
Co-Authors:
Carlos Heitor de Andrade Lustosa, Yuri José Oliveira Moraes, Antonio Almeida Silva, MARCELO CAVALCANTI RODRIGUES, Armando Wilmans Nunes da Fonseca Júnior, Marcelio Ronnie Dantas de Sá, Raimundo Duarte
Presenter: Carlos Heitor de Andrade Lustosa
doi://10.26678/ABCM.COBEM2019.COB2019-1484
Abstract
As cities tend to grow vertically, these buildings become more affected by vibration phenomena. If these new constructions are not well prepared for this type of effort, great damage can be caused, leading to the failure of the structure. This work aims to attenuate the effects of vibration on a simplified structure with three degrees of freedom, and compare the effectiveness of each process, regarding the damping provided to the system. Firstly, a Tuned Mass Damper (TMD) will be added, followed two types of springs, steel and a Shape Memory Alloy (SMA). When dealing with SMA springs, it is also important to analyze the effect that the pre-load of this type of absorber has on the damping. The results indicate that the SMA springs were more effective in most of the cases, with a maximum reduction of 52.4 dB. For the pre-load, it was noted that the springs with a pre-load of 300% were more effective in most cases, especially when the top floor of the structure was analyzed.
Keywords
Tuned mass damper (TMD), Shape memory alloys (SMA), Passive Vibration Control
