Title: On modelling brick/mortar interface via a St. Venant-Kirchhoff orthotropic soft interface. Part II: in silico analysis

Authors: Maria Letizia Raffa; Frédéric Lebon; Raffaella Rizzoni

Addresses: CNRS, Laboratoire Modélisation et Simulation Multi-Echelle, UMR CNRS 8208, 61, Av. du Général de Gaulle, 94010 Créteil Cedex, France ' Aix-Marseille University, CNRS, Centrale Marseille, Laboratory of Mechanics and Acoustics, 4 Impasse Nikola Tesla CS 40006 - 13453, Marseille Cedex 13, France ' Department of Engineering, University of Ferrara, via Saragat 1, 44121 Ferrara, Italy

Abstract: A new strategy for the numerical modelling of brick/mortar interfaces at the macro-scale taking into account finite strains and evolving microcracking phenomena is introduced. A numerical validation of the non-linear-imperfect interface model formulated in Part I of the present paper, is proposed. Well-established experimental data concerning diagonal compression of masonry walls are simulated within the finite element method. The localisation zones of highest displacement jumps and stresses obtained through the numerical simulations are in good agreement with the experimental findings. The proposed non-linear interface model is also compared with a linear interface model for masonry structures.

Keywords: asymptotic analysis; damage; FEM; finite strain; imperfect interfaces; masonry structures; microcracking; micromechanical homogenisation; orthotropic interphase; spring-like models.

DOI: 10.1504/IJMRI.2017.087430

International Journal of Masonry Research and Innovation, 2017 Vol.2 No.4, pp.259 - 273

Received: 30 Jan 2017
Accepted: 06 Mar 2017
Published online: 15 Oct 2017 *

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