Seismic Performance Evaluation of Friction Dampers and Metallic Yielding Dampers in Steel Frame Structures

In recent years, the use of control systems and energy dissipation devices has received widespread attention to reduce vibrations caused by dynamic loads and to improve the seismic performance of structures. Among these systems, metallic yielding dampers and friction dampers are notable, both of which are widely used in optimizing the seismic response of steel frames. In this study, the seismic behavior of two-story steel frames equipped with these two types of dampers—individually and in combination—has been investigated through numerical modeling in an analytical software environment under dynamic loading. For this purpose, five models were analyzed and compared: a reference frame without dampers, a frame with metallic yielding dampers, a frame with friction dampers, a frame with a metallic yielding damper on the first floor and a friction damper on the second floor, and vice versa. The results indicate that the use of dampers leads to an increase in energy dissipation capacity, a reduction in inter-story drifts, and a decrease in base shear. Furthermore, the findings reveal that the metallic yielding damper is more effective in reducing base shear, while the friction damper performs better in controlling displacements and enhancing energy absorption. Overall, the combined use of these two types of dampers can be an efficient approach to improving the seismic performance of steel frames.

کلیدواژه ها:

Friction Damper ، Metallic Yield Damper ، Steel Frame ، Seismic Performance ، Energy Dissipation