Nonlinear Time History Analysis of a Single-Degree-of-Freedom Steel Structure Incorporating ADAS Damper Modeling Using ETABS

Abstract

The incorporation of passive energy dissipation devices has emerged as a promising technique for mitigating structural response to dynamic loads such as wind and earthquakes. These devices are strategically mounted within buildings, allowing for the dissipation of a substantial portion of the input energy, thereby reducing the demand on the primary structural components. This paper presents a comprehensive approach to modeling and analyzing the behavior of a single-degree-of- freedom (SDOF) steel structure equipped with an Added Damping and Stiffness (ADAS) damper element. A mathematical formulation is developed to derive the combined stiffness of the structural system, considering the contributions of both the frame and the ADAS damper. Furthermore, a nonlinear time history analysis is performed on the SDOF steel frame utilizing the renowned El Centro ground motion record. The study aims to evaluate the efficacy of the ADAS damper in enhancing the seismic performance of the structure by dissipating a significant amount of the imparted energy. The proposed modeling technique and numerical simulations provide valuable insights into the design and implementation of passive energy dissipation systems for seismic risk mitigation in steel structures.