抄録
There are many studies on base isolation and seismic isolation of structures. In order to clarify experimentally, the efficiency of variable stiffness control that has been considered using numerical simulation, a variable stiffness structure using a clutch system was made. A simple on-off control with a clutch mechanism of a variable stiffness structure to the magnitudes of acceleration has been proposed. This control method was examined in the research.
Using this method, when the vibration acceleration amplitude is large, the clutch is connected to the additional structure saving potential energy in the additional structure, and when the vibration acceleration amplitude decreases, the clutch is disconnected from the additional structure releasing the potential energy at once and attenuating the displacement amplitude of vibration, so that the vibration can be decreased effectively.
