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Etude de la vulnérabilité de structures cylindriques soumises à une forte explosion externe

Abstract : This work is a contribution to the assessment and prevention of potential domino effects caused by an explosion in an industrial area. It focuses specifically on the vulnerability of storage tanks subjected to a blast wave. Within this context, we investigate the effects of gaseous detonation. The objective is twofold: on one hand, to characterize the blast loading and, on the other, to predict the structural response. Three representative atmospheric chemical tanks were selected. Experiments were conducted at small scale satisfying Hopkinson-Cranz and structural scaling laws. A first campaign was performed on rigid instrumented cylinders to quantify the loading in terms of time and space pressure distribution. A second campaign was performed on flexible cylinders to quantify the structural response in terms of dynamic buckling damage. Simplified semi-analytical models were developed to provide damage predictions. They are based on a Friedlander pressure-time history pulse description, shallow-shell (Donnell's) equations and critical shape imperfection amplification thresholds. These models are used to construct pressure-impulse buckling damage diagrams for atmospheric tanks subjected to blast loading. The comparison between experimental results and numerical predictions highlights the interest and the relevance of the proposed approach.
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https://theses.hal.science/tel-00717411
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Submitted on : Thursday, July 12, 2012 - 4:49:06 PM
Last modification on : Saturday, October 15, 2022 - 3:24:48 AM
Long-term archiving on: : Saturday, October 13, 2012 - 3:00:53 AM

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  • HAL Id : tel-00717411, version 1

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Duy-Hung Duong. Etude de la vulnérabilité de structures cylindriques soumises à une forte explosion externe. Autre. Université d'Orléans, 2012. Français. ⟨NNT : 2012ORLE2008⟩. ⟨tel-00717411⟩

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