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Multiscale computational first order homogenization of thick shells for the analysis of out-of-plane loaded masonry walls Petracca, Massimo Pelà, Luca Rossi, Riccardo Oller Martínez, Sergio Horacio Camata, Guido Spacone, Enrico Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental Centre Internacional de Mètodes Numèrics en Enginyeria Universitat Politècnica de Catalunya. ATEM - Anàlisi i Tecnologia d'Estructures i Materials Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures Masonry--Maintenance and repair Computational multiscale homogenization Representative volume element (RVE) Shell Masonry Periodic micro-structure Strain localization COMP-DES-MAT Project COMPDESMAT Project Estructures de murs -- Models matemàtics This work presents a multiscale method based on computational homogenization for the analysis of general heterogeneous thick shell structures, with special focus on periodic brick-masonry walls. The proposed method is designed for the analysis of shells whose micro-structure is heterogeneous in the in-plane directions, but initially homogeneous in the shell-thickness direction, a structural topology that can be found in single-leaf brick masonry walls. Under this assumption, this work proposes an efficient homogenization scheme where both the macro-scale and the micro-scale are described by the same shell theory. The proposed method is then applied to the analysis of out-of-plane loaded brick-masonry walls, and compared to experimental and micro-modeling results. Peer Reviewed Postprint (author's final draft) 2017-03 Article Petracca, M., Pela, L., Rossi, R., Oller, S., Camata, G., Spacone, E. Multiscale computational first order homogenization of thick shells for the analysis of out-of-plane loaded masonry walls. "Computer methods in applied mechanics and engineering", Març 2017, vol. 315, p. 273-301. 0045-7825 https://hdl.handle.net/2117/98657 10.1016/j.cma.2016.10.046 eng http://www.sciencedirect.com/science/article/pii/S0045782516303917 info:eu-repo/grantAgreement/EC/FP7/320815/EU/Advanced tools for computational design of engineering materials/COMP-DES-MAT http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Open Access 29 p. application/pdf