Effect of Re-centering Shape Memory Alloy Damper on Seismic Response of Torsionally Coupled Idealized Frame System

The torsionally coupled buildings are more vulnerable during strong earthquake ground motions. When a shape memory alloy (SMA) damper is used, the response of structures to lateral and torsional motion is effectively reduced. In this research, numerical investigation is carried out on the seismic response of an idealized single-story asymmetrical frame system with an SMA damper subjected to strong earthquake ground motions. SMA damper restoring force, eccentricity ratio, and lateral and torsional displacements are all variables in this parametric study. The SMA damper-controlled frame’s reaction is measured compared to that of the uncontrolled frame. It is found that the implementation of the SMA damper results in significant reduction in the seismic response of the structure.