Dynamic Absorber Using Lever and Pendulum Mechanism for Vibuation Control of Structure. (The Principle of Mechanism and Its Optimum Tuning).

Abstract

A new dynamic absorber system using the lever and pendulum mechanism is proposed for controlling the displacement of high-rise structures due to wind or earthquakes. Due to the effect of the lever and pendulum mechanism, the displacement of the dynamic absorber can be several times less than that of an ordinary dynamic absorber, and the spring can be designed easily from the point of view of its strength. Also, due to the effect of the virtual mass by this mechanism, the natural period of this system can be lengthened without using a soft spring, and the damping can be made several times higher than that of an ordinary dynamic absorber.