  This research proposes and evaluates a superelastic memory alloy re-centering
damper system for improving the reaction of steel frame buildings that have
been exposed to several levels of seismic threat. The planned superelastic
memory alloy re-centering damper (SMARD) relies on high-performance shape
memory alloy (SMA) bars for its abilities of recentering and augments its
deformation potential with friction springs. To begin, this study investigates
the superelastic reaction of NiTiHfPd SMAs under a variety of conditions and
shows how they can be used in seismic applications. To gather experimental
results, uniaxial experiments on superelastic NiTiHfPd SMAs are performed at
temperatures ranging from -35 to 25 oC and loading frequencies ranging from
0.05 to 1 Hz with four distinct strain amplitudes. We explore the impact of
loading rate and temperature on the superelastic properties of NiTiHfPd SMAs.
The complex answer of 6-floor and 9-floor steel special moment frame buildings
with built SMARDs is then determined using an empirical model. Finally,
nonlinear reaction time background simulations are used to characterize the
actions of managed and unregulated buildings while 44 ground motion data are
used. The results indicate that SMARDs will significantly reduce the dynamic
behavior of steel-frame buildings at various seismic threat levels while
simultaneously improving their post-earthquake functionality.
