Effect of yield-torsional damper on the vibrational Energy Absorption of the Structure

To improve the behavior of seismic system and increasing the capacity of structures, using of dampers is a suitable method for energy dissipation and reduction of seismic demand. The behavior of structures during earthquake has a direct relationship with the stiffness, ductility and hysteresis curves of the energy dissipation of the resistant system. Controlling and dissipating the energy input to the structure in order to reduce earthquake damage is a perfect way to meet the needs of structures. For this purpose, a system has been introduced that is utilized as a fuse during the earthquake due to its high ductility and prevents damage to the main elements of the structure. In this study, a specific type of yield damper with torsional behavior named yield-torsional damper or TFD is investigated and the energy absorption capacity of the structure is evaluated. It was observed that this system increases the power of structural energy absorption. For this purpose, the proposed system has been numerically examined nonlinearly in ABAQUS software. The results of this research indicate that the application of TFD dampers results in the structure to depreciate energy in the interface member and significantly reduces the contribution of other structural members in the energy absorption and puts the behavior of the structure at a better performance level.