The Robustness of Tuned Liquid Dampers Optimized via Metaheuristic Methods

Abstract

In the optimization made with metaheuristic algorithms, each fixed value and design constraint entered into the system play an important role in determining the optimum parameters. Looking at the general logic of passive control devices used for structure control, it is seen that damping is aimed with the help of a spring and mass. For damping devices, these constants are usually values such as structure mass, stiffness, and damping coefficient. Building mass is one of the most important parameters used by dampers to provide structure control. It is known that the mass affects the properties of the structure through frequency and damping coefficient. In the optimization for the structure control, since the behavior of the building mass under the effect of variable loads is not known exactly, the optimization process was carried out with a fixed mass value. This study aims to investigate the effect of the design parameters such as tank radius, height, period, and damping ratio optimized for a constant mass value, on the displacement and total acceleration values of the structure for different building mass values for a tuned liquid damper (TLD) device in which water is used as a liquid. The optimum TLD parameters are also acceptable and effective when the mass of the structure is different from the taken in the optimization process.