Abstract
In this paper, an elastoplastic-friction damper is proposed as a hysteresis damper which provides damping even in the case of small displacement. The damper is composed of an elastoplastic damper using V-shaped plates and a friction damper consisting of V-shaped springs, brake shoes and a brake plate. The relationship between the force and displacement of the damper was analyzed, and the resisting force characteristics and fatigue strength of the damper were measured. An experimental model of a machine-isolation device system using the damper was also made, and the seismic responses of the system were measured using an electrohydraulic-type shaking table. The experimental results were compared with the calculated results.
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