A promising solution for semi-active vibration control of different dynamic
systems is to use magnetorheological (MR) dampers. In the present study, the
investigation focuses on developing a novel single and multi-coil self-powered
magnetorheological (MR) damper system using electromagnetic induction (EMI)
for seismic mitigation. The conventional MR dampers, which rely on external
power sources, can be unreliable and impractical in earthquake-prone locations.
Thus, the EMI device connected to the MR damper can be used as an effective
and alternative power source for the MR damper, results in a self-powered
system. The proposed energy-harvesting system is an MR damper placed above
the top of the piston. The coil is wound around the piston, and the outer casing
with a ferrite magnet is fixed. As the mechanical energy of the piston is converted
into electrical energy, its self-tuning capacity is a perfect fit for structural
vibration control applications. The MR damper is subjected to cyclic and timehistory loading. At a maximum amplitude of 15 mm, the damper generated
1767.8 N for cyclic loading and -1780 N for earthquake loading, the El Centro
earthquake 1940 is considered for the study. By placing EMI, the mechanical
energy is converted into electrical energy and powers the damper to avoid
external power. The experimental results showcase enhanced damping forces
and adaptability, thereby establishing it as an innovative and effective it can be
alternative to conventional MR dampers for vibration control in future.
