Investigation on Dynamics Nonlinear Analysis of Steel Frames with Steel Dampers

Latest experiment shows most of steel structures are damageable against earthquake in IRAN. One way to retrofit the existing structures is the energy dissipater dampers using the Added Damping And Stiffness elements abbreviate ADAS system. This system has significant advantage such as insensitive to heat and environmental agents, reliable and stable behavior and appropriate resistance, made them in the focus of researcher around the world. In this research investigation on the structural behavior of steel frames equipped with ADAS system is conducted in the three different stories 4,8,12. More investigation based on nonlinear dynamics analysis with three earthquake records of Tabas, Northridge, El Centro. Result shows shear force in some floors of frames including ADAS damper reduces in comparison to the frames just only with braces. By increasing number of floors, we observe more uniform displacements, appropriate energy distribution in the frames with ADAS systems.