Anti-seismic device, insulator, dissipator
BRAD® (Buckling-Restrained Axial Dampers) is an anti-seismic device by Fip Industriale.
Steel hysteretic dampers exploit the plasticization of appropriately-shaped steel elements, designed to ensure a stable cyclic behaviour.
Crescent-shaped and peg-shaped elements are the most used for bridges, while buckling-restrained axial dampers (BRAD) are the most used as dissipative bracings in buildings.
For bridges, steel hysteretic dampers can be combined with shock transmitters.