Experimental and numerical investigation on a passive control system for the mitigation of vibrations on SDOF and MDOF Structures: mini Tribological ROCKing Seismic Isolation Device (miniTROCKSISD)

This paper illustrates the results of an experimental campaign performed on a scale prototype base dissipator called Mini Tribological ROCKing Seismic Isolation Device. device allows smooth, controlled and damped rocking by means frictional layers viscous elastic springs, which aim at decoupling frequencies superstructure, dissipating energy during motion re-centering system once external action vanishes. Four superstructures are tested – shear type frame, braced unbraced, multi-story frame SDOF oscillator with 96 ambient vibration impulsive tests. An analytical model is illustrated validated The reduction relative displacement demand analyzed for all cases together acceleration demand, showing positive effects dynamic behavior superstructures.