SIMULTANEOUS OPTIMIZATION OF PASSIVE DAMPERS FOR THE SEISMIC CONTROL IN STRUCTURES

Sergio Pastor Ontiveros Pérez¹; Letícia Fleck Fadel Miguel¹; Leandro Fleck Fadel Miguel²

¹ UFRGS; ² UFSC

doi:10.20906/CPS/COB-2015-0478

Resumo

The damper's optimization is a new area which has been investigated in recent years. There are various methods employed in optimization, among which are highlighted the classic and the most recent that are playing in reliability, rapidly and efficient for optimum result. This work demonstrates the simultaneous optimization of friction dampers using the Firefly Algorithm, which is a recent meta-heuristic algorithm inspired by the behavior of the fireflies. The friction damper despite showing a more complex mathematical formulation than others types as viscous dampers, for example, stands out among the passive devices due to their low cost of construction, maintenance and good performance in vibration control. The optimization has as main objective to decrease the response in terms of displacement at the top of the analyzed structure, which is obtained through an algorithm performed in MATLAB based on the Central Finite Difference method, optimizing the position and the damping forces of a maximum number of friction dampers. The results showed that the response in terms of the displacement, decrease significantly, concluding that the developed method is robust and efficient to obtain the optimum positions and damping forces in the structure.

Palavras-chave: Simultaneous optimization; friction dampers; passive control; Firefly Algorithm