Abstract
Tuned Mass Dampers (TMDs) are efficient passive damping devices that are widely used. The typical components are a mass, a spring and a dashpot. However, some parts which need to be maintained exist in TMDs. Therefore, tuned rolling-cylinder dampers (TRCDs) are proposed, and it is expected to overcome such problem. TRCDs are composed of a cylindrical container and multiple rolling elements, and the rolling elements rotate on cylindrical surface. TRCDs suppress horizontal vibration by rotation of the rolling elements and friction between rolling elements. The damping performance of TRCDs is adjusted by the size and number of rolling elements, but the optimum adjustment method has not been established. This paper presents the optical solution of TRCDs using particle swarm optimization (PSO). PSO is one of the methods to mathematical optimization problem, and it is possible to efficiently search for the best tuple from multiple combinations. In this study, PSO was introduced to optimize the radii of the rolling elements and the cylindrical container.
