Experimental evaluation of metallic hybrid damper device using comb teeth damper and friction damper

Passive energy dissipation devices are systems installed in structures to reduce vibrations and dissipate the seismic energy during earthquake events.Generally, the passive dampers such as fluid viscous damper, viscoelastic damper, metallic damper and friction damper are being used in Reinforced Concrete (RC) and steel buildings worldwide.Hybrid passive damper is the combination of two dampers made into a single device, which performs better in all seismic zones.This study presents the development of a novel hybrid passive damper (CTFD) composed of a comb teeth damper (CTD) and a friction damper (FD).Monotonic lateral load test was conducted on CTD, FD and CTFD to determine the lateral load carrying capacity, ductility ratio, initial stiffness and energy dissipation capacity.The amount of energy dissipated by hybrid damper is 52.9% more than CTD and 79.3% more than FD.