OUT OF PLANE CAPACITY OF INFILLS AFTER IN PLANE LOADING: A PREDICTION ANALITICAL MODEL Maria Zizzo 1 , Liborio Cavaleri 1 , and Fabio Di Trapani 2 1 University of Palermo Department of Engineering Viale delle Scienze - 90133-Palermo-Italy {maria.zizzo, liborio.cavaleri}@unipa.it 2 Politecnico di Torino Department of Structural, Building and Geotechnical Engineering 10129- Turin-Italy fabio.ditrapani@polito.it Abstract Earthquakes produce on infills In-Plane (IP) and Out-Of-Plane (OOP) actions. The recent earthquakes have proved that the OOP collapse of infills is a diffused mechanism also in buildings designed to resist to seismic events in agreement to the most modern strategies. This fact makes the question arises about the safety of infills with respect OOP actions. The strong interaction between IP and OOP behaviour of infills traduces in a progressively reduction of the OOP strength. Further, only in few cases codes suggest adequate strategies to face this issue. For what above, in the paper the reduction of OOP strength because of the IP damage is studied by an extended numerical experimental campaign based on FE models to be con- sidered as complementary to the very few laboratory experimental tests available in the liter- ature. Keywords: Infills, Out-of-Plane behaviour, In-Plane/Out-of-Plane interaction, Out-of-plane strength. 2582 COMPDYN 2019 7 th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering M. Papadrakakis, M. Fragiadakis (eds.) Crete, Greece, 24–26 June 2019 Available online at www.eccomasproceedia.org Eccomas Proceedia COMPDYN (2019) 2582-2593 ISSN:2623-3347 © 2019 The Authors. Published by Eccomas Proceedia. Peer-review under responsibility of the organizing committee of COMPDYN 2019. doi: 10.7712/120119.7095.19377