Seismic response of CFS shear walls sheathed with nailed gypsum panels: Numerical modelling

Building codes around the globe are in a transition to update their design guidelines to meet the objectives of performance based seismic design (PBSD). The fulfilment of the objectives of PBSD requires number of collapse simulations of a building equipped with certain type of seismic force resistant system. Numerical models with an ability to simulate post-peak deteriorating behaviour are essential for these collapse simulations. A European research project named ELISSA was carried out in recent years, to better understand the seismic behaviour of cold-formed steel shear walls sheathed with nailed gypsum based panels through experimental and numerical studies. Within the framework of project, numerical models were developed for single shear walls with an ability to simulate their nonlinear hysteretic behaviour and possessing the capability of being used in the collapse simulations of complete building models for meeting the PBSD objectives. These models are the focus of the study presented herein. Three types of models are presented, which differ with each other in terms of complexity, type of experimental results used in their calibration and the ability to simulate nonlinear monotonic or cyclic lateral static behaviour.