عنوان مقاله [English]
By studying steel buildings, civil engineers are always looking to design joints that, in addition to increasing the rotational capacity of the joint, prevent the brittle failure of the structure and allow the structure to be repaired after an earthquake. Steel dampers are suitable elements to achieve this goal and simple construction and use, has given them a relatively high advantage over other dampers. These dampers also provide the possibility of reconstruction and low cost of the building by preventing the severe destruction of steel beams and columns during an earthquake.
In this study, by comparing several samples of these dampers, their energy dissipation, damping and effective stiffness have been investigated by modeling in ABAQUS software. According to the results, SPD and DPD type dampers have better seismic behaviors and with increasing height, the seismic performance of all dampers have improved. Also, by simulating the behavior of dampers in SAP software, two-dimensional frames of 3, 7 and 15 story with and without dampers have been investigated under the acceleration of 7 earthquakes. The frame response does not give the same results at different accelerometers. However, by adding dampers and creating suitable conditions for the steel beam rotation, an increase in frame energy absorption has been observed in all models with dampers.