A concurrent micro/macro FE-model optimized with a limit analysis tool for the assessment of dry-joint masonry structures - Archive ouverte HAL Access content directly
Journal Articles International Journal for Multiscale Computational Engineering Year : 2022

A concurrent micro/macro FE-model optimized with a limit analysis tool for the assessment of dry-joint masonry structures

Abstract

A two-step strategy for the mechanical analysis of unreinforced masonry (URM) structures, either subjected to in-and out-of-plane loading, is presented. At a first step, a semi-automatic digital tool allows the parametric modeling of the structure that, together with an Upper bound limit analysis tool and a heuristic optimization solver, enables tracking the most prone failure mechanism. At a second step, a coupled concurrent FE model with micro-and macro-scales is assumed. A micro-modeling description of the masonry is allocated to regions within the failure mechanism found in the former step. In converse, the other domain regions are modeled via a macro-approach, whose constitutive response is elastic and orthotropic and formulated through closed-form homogenized-based solutions. The application of the framework is based on non-linear static (pushover) analysis and conducted on three benchmarks: (i) an in-plane loaded URM shear wall; (ii) a U-shaped URM structure; and (iii) a URM church. Results are given in terms of load capacity curves, total displacement fields, and computational running time; and compared against those found with a FE microscopic model and with a limit analysis tool. Lastly, conclusions on the potential of the framework and future research streams are addressed.
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Dates and versions

hal-03587681 , version 1 (25-02-2022)

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Marco Funari, Luís Silva, Nathanael Savalle, Paulo Lourenço. A concurrent micro/macro FE-model optimized with a limit analysis tool for the assessment of dry-joint masonry structures. International Journal for Multiscale Computational Engineering, In press, ⟨10.1615/IntJMultCompEng.2021040212⟩. ⟨hal-03587681⟩
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