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Communication Dans Un Congrès Année : 2019

A Discrete Element Method approach for the preservation of the architectural heritage against explosions

Filippo Masi
Ioannis Stefanou
Paolo Vannucci
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Victor Maffi-Berthier
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Résumé

Most emblematic monumental and historical buildings are masonry structures, made of brick and stone. Assess their response and vulnerability against explosive threats is a crucial issue in the preservation of such architectural assets and their visitors. The investigation of the blast loading response of masonry structures requires a proper modelling approach of the material and the loads arising from an explosion. Here we propose a Discrete Element Method approach to investigate the fast-dynamic response of planar masonry structures subjected to blast loading. The Discrete Element Method captures the detailed mechanical and geometrical characteristics of masonry as well as the inherent coupling between the in-and out-of-plane motions. Blast loads are applied through an external dynamic library, which accounts for the effect of surface rotation of masonry components due to the pressure load (incident angle effect). The discrete model is validated through existing experimental tests. The numerical simulations are found to predict with high fidelity the dynamic response and failure of the specimens, corroborating our modelling assumptions. The proposed approach is central to understand the behaviour of masonry structures subjected to blast loading and the influence of the various micro-mechanical material parameters.
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Dates et versions

hal-04392227 , version 1 (13-01-2024)

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  • HAL Id : hal-04392227 , version 1

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Filippo Masi, Ioannis Stefanou, Paolo Vannucci, Victor Maffi-Berthier. A Discrete Element Method approach for the preservation of the architectural heritage against explosions. 12th HSTAM International Congress on Mechanics, Sep 2019, Thessaloniki, Greece. ⟨hal-04392227⟩
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