Title: A 2D finite element based on an enriched kinematics for nonlinear analysis of masonry walls

Authors: Daniela Addessi; Elio Sacco

Addresses: Department of Structural and Geotechnical Engineering, Sapienza University of Rome, Via Eudossiana 18 00184 Roma (RM), Italy ' Department of Structures for Engineering and Architecture, University of Naples Federico II, Via Claudio 21 80125 Naples (NA), Italy

Abstract: This paper presents a kinematic enriched finite element model for nonlinear analysis of brick masonry walls loaded in their plane. The finite element accounts for the transverse deformation of the wall and permits to reproduce mortar-brick interaction in wall thickness direction. Non-local constitutive relationships are considered both for mortar and bricks, adopting a damage-friction law for the mortar and an isotropic damage model for the bricks, both accounting for tensile failure mechanisms. A numerical procedure is developed for evaluation of damage and friction in mortar and brick materials. Numerical applications are presented, comparing results obtained by the proposed finite element with experimental outcomes.

Keywords: finite element; enriched kinematics; damage; friction; masonry walls.

DOI: 10.1504/IJMRI.2019.096819

International Journal of Masonry Research and Innovation, 2019 Vol.4 No.1/2, pp.97 - 112

Published online: 11 Dec 2018 *

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