Characterisation of material and connection behaviour in sheathed cold-formed steel wall systems – Part 2: Analytical modelling

Analytical models to describe the material and connection behaviour of key components sheathed cold-formed steel wall systems are developed assessed in present paper. The experimental data generated collected companion paper (Kyprianou et al. [1]) utilised for calibration models. assembled database comprises results more than 400 physical tests, featuring tests on plasterboard oriented strand board (OSB), screw connector as well such pull-through push-out tests. Ramberg–Osgood model (Ramberg Osgood [2]) was shown accurately stress–strain both OSB longitudinal transverse direction tension compression, while Mander (Mander [3]) also capture compression materials follow post peak unloading response. A generalised curve with linear post-peak adopted describing load-deformation screws plasterboard, a similar formulation, but different exponents initial subsequent parts shear load-slip steel-to-board connections. Predictive expressions ultimate capacities recommended values remaining parameters provided herein. predictive suitable use numerical simulations advanced design methods.