Design and numerical simulation of shake-table tests of CFS strap-braced stud structures

The unconventionality of the cold-formed steel (CFS) structures raised, in recent times, a lot of interest from many national and international companies resulting in the promotion of ex-perimental activity with the main aim of investigating the seismic behaviour of these systems. In this perspective, an important cooperation between the University of Naples “Federico II” and Lamieredil S.p.A. company started in the last years. The research project included an ex-tended experimental campaign, involving shake-table tests on two three-storeys prototypes in reduced scale (1:3). The investigated seismic-resistant systems were CFS strap-braced stud walls, designed as low dissipative. The present paper illustrates the design of prototypes and the development of a numerical model with OpenSees software for the simulation of seismic response.