Nonlinear characterization of magnetorheological elastomer-based smart device for structural seismic mitigation

Magnetorheological elastomer (MRE) has been demonstrated to be effective in structural vibration control because of controllable stiffness and damping properties with the effect external magnetic fields. To achieve a high performance MRE device-based control, robust accurate model is necessary describe nonlinear dynamics device. This article aims at realising this target via modeling an innovative device, i.e. isolator. First, field-dependent isolator were analysed based on experimental data various dynamic tests. Then, phenomenal was developed account for these unique characteristics MRE-based Moreover, improved PSO algorithm designed estimate parameters. Based identification results, generalised proposed clarify due varied currents, which then validated by random earthquake-excited test data. model, frequency strategy semi-active devices-incorporated smart structure suppression. Finally, using three-storey frame four benchmark earthquakes, numerical study conducted validate current-dependent satisfactory results.