A 3D detailed micro-model for the in-plane and out-of-plane numerical analysis of masonry panels. (15th August 2018)

• Record Type: Journal Article
• Authors: D'Altri, Antonio Maria; de Miranda, Stefano; Castellazzi, Giovanni; Sarhosis, Vasilis
• Is Part Of: Computers & structures. Volume 206(2018)
• Page Start: 18
• Page End: 30
• Publication Date: 2018-08-15
• Subjects: Masonry -- Cohesive interfaces -- Micro-modelling -- Plastic-damage model -- Cracking -- Crushing; Structural engineering -- Data processing -- Periodicals; Electronic data processing -- Structures, Theory of -- Periodicals; 624.171
• DOI: 10.1016/j.compstruc.2018.06.007
• Languages: English
• ISSNs: 0045-7949

Abstract

Highlights: A 3D detailed micro-model for the numerical analysis of masonry panels is proposed. Textured units are composed by brick and mortar nonlinear plastic-damaging finite elements. Textured units are assembled by means of rigid-cohesive interfaces. Experimental-numerical comparisons are provided for masonry panels and positive results are obtained. The direct characterization of all the mechanical properties from small-scale tests is guaranteed. Abstract: In this paper, a novel 3D detailed micro-model to analyse the mechanical response of masonry panels under in-plane and out-of-plane loading conditions is proposed. The modelling approach is characterized by textured units, consisting of one brick and few mortar layers, represented by 3D solid finite elements obeying to plastic-damage constitutive laws. Textured units are assembled, accounting for any actual 3D through-thickness arrangement of masonry, by means of zero-thickness rigid-cohesive-frictional interfaces, based on the contact penalty method and governed by a Mohr-Coulomb failure surface with tension cut-off. This novel approach can be fully characterized by the properties obtained on small-scale experimental tests on brick and mortar and on small masonry assemblages. The interface behaviour appears consistent with small-scale tests outcomes on masonry specimens. Experimental-numerical comparisons are provided for the in-plane and out-of-plane behaviour of masonry panels. The accuracy, the potentialities and the efficiency of the modelling approach are shown and discussed.