Abstract
In this paper, a new type of arm-type damper with two links and three joints (human type joints) has been developed. The damper is able to suppress six modes of vibration of a machine. The trial damper was made and the resisting force characteristics in the three translational directions were discussed theoretically and experimentally. The frequency responses of a single-degree-of-freedom system and the seismic responses of a three-degree-of-freedom system, which consist of a mass and four coil springs and supported by the damper, were measured using a three-dimensional vibration machine. The experimental results are compared with the calculated ones, and the effects of vibration suppression of the damper are discussed.
