GNGTS 2021 - Atti del 39° Convegno Nazionale

311 GNGTS 2021 S essione 2.2 in the glass panel due to the in-plane loads which can assume different directions. In particular, the transoms section consists of two steel angles in order to ensure that there are no out-of- plane displacements at the edges. The case study herein descripted is considered a preliminary analysis of a wider range of applications. Moreover, the substructure could be assumed as a limit condition in which the contribution of mullions, in terms of stiffness and strength, is fully neglected. 2.2 FE modelling During a seismic event the small-size glass panel tends to follow the movement of the full-size structure to which it is fixed and if the movement takes place in the facade plane, the resulting deformation is a combination of a series of elements which are subjected to a roto-translational motion. In order to predict the seismic behaviour of the structure in object, a numerical model has been developed in ABAQUS/Standard. The laminated (LG) panel is modelled as a 4-node shell element with a multilayer section (t glass xt PVB xt glass =1x0.76x1mm) in order to moderate processing times, which become limiting in the case of non-linear dynamic analysis ( Fig.1(c)Detail of FE model ). Regarding the characterization of materials, an infinitely elastic bond has been chosen for both glass and PVB. The mechanical parameters involved in the modelling are reported in the following: