Article (Scientific journals)
Pressure-impulse diagram of a beam developing non-linear membrane action under blast loading
Hamra, Lotfi; Demonceau, Jean-François; Denoël, Vincent
2015In International Journal of Impact Engineering, 86, p. 188–205
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Keywords :
Pressure–impulse diagram; Blast loading; Non-linear membrane force; Lateral restraint; Lateral inertia
Abstract :
[en] The p–I diagram of a frame beam subjected to blast loading is established, including the elastic lateral restraint and inertia offered by the rest of the structure, the development of nonlinear membrane action and also, the bending-tension (M−N) interaction that develops in the plastic hinges. The analytical procedures to compute the asymptotes in the p–I diagram as well as a parametric study on the p–I diagram are provided. A dimensional analysis of the problem reveals that, under the considered assumptions, four dimensionless parameters mainly influence the required ductility of the beam. Two of them are related to the behavior of the indirectly affected part (the lateral restraint and mass). Another one is related to the mechanical properties of the investigated beam (i.e. the ratio of the bending to axial resistance). The last parameter incorporates scales of the geometry and of the deformed configuration at the onset of the plastic mechanism.
Research center :
MS2F ArGEnCo
Disciplines :
Civil engineering
Author, co-author :
Hamra, Lotfi ;  Université de Liège - ULiège > Département ArGEnCo > Adéquat. struct. aux exig. de fonct.& perfor. techn.-écon.
Demonceau, Jean-François  ;  Université de Liège - ULiège > Département ArGEnCo > Département ArGEnCo
Denoël, Vincent  ;  Université de Liège - ULiège > Département ArGEnCo > Analyse sous actions aléatoires en génie civil
Language :
English
Title :
Pressure-impulse diagram of a beam developing non-linear membrane action under blast loading
Publication date :
December 2015
Journal title :
International Journal of Impact Engineering
ISSN :
0734-743X
Publisher :
Pergamon Press - An Imprint of Elsevier Science, Oxford, United Kingdom
Volume :
86
Pages :
188–205
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Project FRFC no 6839853
Funders :
FRFC - Fonds de la Recherche Fondamentale Collective [BE]
Available on ORBi :
since 27 April 2015

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