Hassan Abbasi
Abstract
Today, the use of passive dampers as a means of absorbing seismic energy in structures is very common. Yielding dampers are also among the inactive dampers that show good performance in vibration loading. With the entry of the yielding damper into the plastic area, the energy entering the structure will be spent on the plastic deformation. In addition to absorbing much of the vibrational energy due to entering the plastic area, the dampers that give in to the Chevron brace will also prevent the braces from buckling like a fuse. Because the low stiffness of the damper impairs its performance and also the excessive stiffness of the damper will cause the buckles to buckle, the lateral stiffness of the damper must be designed in the optimal state. Therefore, to increase the performance of the yield damper, the geometric conditions of the damper should be defined in such a way that most of it surrender before local buckling. In this paper, circular and elliptical dampers and T-ADAS dampers in Chevron bracing are investigated using ABAQUS finite element software. After extracting the absorption energy, the results are compared with each other to obtain a more optimal state.
Keywords
Yielding damper; Chevron brace; Finite element; Abaqus; T-ADAS
