Hooman Pooadi Baghbadorani - Master in Civil Engineering-Structures, Faculty of Engineering, State University of Shahrekord

Controlling vibrations in short-period structures subjected to seismic loading is crucial for optimizing seismic performance. This paper investigates friction pendulum isolators with both constant and variable radius as a means to enhance the seismic behavior of structures. Friction pendulum isolators with a constant radius are susceptible to intensification phenomena in near-field earthquakes. Modifying the isolator radius leads to changes in its period and stiffness, thereby mitigating the amplification effect. The study first models and validates the friction pendulum isolator with a constant radius using Abaqus software. Subsequently, the performance of these isolators, both with constant and variable radius, is examined under harmonic loading to improve structural behavior.

Seismic Performance, Friction Pendulum Isolators, Fixed and Variable Radius, lateral loading.