Abstract
In the previous paper, a friction damper using two sets of V-shaped links, viscoelastic blocks and brake shoes, which has resisting force characteristic of hardening type and returning characteristic to the original position, is proposed. In this paper, the authors confirm that this hardening type friction damper is effective for suppressing the vibration of a single-degree-of-freedom system caused by long-period seismic ground motions as well as by common seismic ground motions. Numerical seismic response analyses were carried out for a single-degree-of-freedom system supported with the hardening type damper. The calculated results were compared with those for a viscous damper and a friction damper with constant friction force, and the effectiveness of the hardening type friction damper was confirmed. The validity of the calculations was substantiated experimentally.
