Methodology for the assessment and refinement of friction-based dissipative devices

An innovative dissipative system for the seismic upgrade of historical buildings is presented. The comprises a friction-based device able to provide energy dissipation capacity connecting walls. To verify compliance device’s initial prototype with relevant European Standards, testing and design methodology developed. This optimisation approach consists of: two tests loops, identity dependence on bolt preloading, type fasteners, frictional interfaces environmental conditions; loop where advanced 3D modelling analysis are used improve according experimental results. performance measured by variation effective damping. iterative procedure singles out parameters that need improvement allows produce new prototypes, differing shape interfaces. revised prototypes prove deliver reliable response cyclic loading, containing damping well within code requirements, even after exposure adverse conditions.