Numerical Assessment of the Selected Supporting Element Carrying Capacity of Critical Infrastructure Facility / Szacowanie Numeryczne Nośności Wybranego Elementu Konstrukcyjnego Obiektu Infrastruktury Krytycznej

Małachowski, Jerzy; Klasztorny, M.; Mazurkiewicz, Łukasz; Kołodziejczyk, D.; Niezgoda, T.

doi:10.2478/jok-2013-0079

Cited by 2 publications

(1 citation statement)

References 13 publications

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“…In this description, the high strain-rate effect was involved based on the Cooper-Simonds relationship. A study completed by Malachowski [12] dealt with the same structure mentioned in this paper. However, the LS-DYNA software was applied, and the steel H-section was modeled as the shell strenghthened by the aluminium foam shield system.…”

Section: Introductionmentioning

confidence: 99%

Close Range Explosive Loading on Steel Column in the Framework of Anisotropic Viscoplasticity

Sielicki

Sumelka

Łodygowski

2019

Metals

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The research was based on data obtained from experimental studies and aims in thechallenge of mapping these results by a mathematical (phenomenological) model. The fieldexperiments were performed on an H-section steel column supported by a reinforced concretefoundation and subjected to a close-in explosion. Numerical studies were carried out usingAbaqus/Explicit code. The user subroutine VUMAT for metallic obstacle was also implemented,together with a coupled Eulerian–Lagrangian approach. The steel column failure recorded duringreal field tests versus computational results was examined and compared. It was crucial that, fromthe computational point of view, the obstacle reflected the generalized thermo-elasto-viscoplastic(GTEV) behavior of Perzyna’s type, including an anisotropic measure of damage.

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Section: Introductionmentioning

confidence: 99%

Close Range Explosive Loading on Steel Column in the Framework of Anisotropic Viscoplasticity

Sielicki

Sumelka

Łodygowski

2019

Metals

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Application verification of blast mitigation through the use of thuja hedges

Gajewski

Peksa

Studziński

et al. 2022

International Journal of Protective Structures

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Nowadays, large gatherings of people, such as open-air concerts, outdoor-sport events, trade fairs, etc., are often attracted by the terrorists. Recently, an interesting passive alternative way of securing such events against terrorist threats appeared in the scientific literature, in which the tree hedges mitigation potential against blast waves were studied. Despite comprehensive studies regarding selected species of hedge trees, the real application outlines were reported to be still missing for those barriers. Our study verified the mitigation potential of thuja in field tests for (i) several distances behind the hedge and for (ii) several positions along the hedge wall. The explosives of 5 kg trinitrotoluene with a rectangular shape were used in four detonations. Six pressure pencil gauges were registering the overpressure histories. A high-speed camera was recording the in-plane deformation of the hedge wall, the motion of selected points on the height of the wall was plotted. For each position, the reduction of overpressure peak and overpressure impulse were obtained in reference to their counterparts for the position without a hedge. The maximal overpressure peak reductions obtained were 14% for case (i) (differing distances from the explosive) and 22% for case (ii) (differing positions along the hedge wall). The experiments' outcomes showed the safest position behind the thuja wall and the actual benefit from using them in the public application if the terrorist acts would happen.

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Numerical Assessment of the Selected Supporting Element Carrying Capacity of Critical Infrastructure Facility / Szacowanie Numeryczne Nośności Wybranego Elementu Konstrukcyjnego Obiektu Infrastruktury Krytycznej

Cited by 2 publications

References 13 publications

Close Range Explosive Loading on Steel Column in the Framework of Anisotropic Viscoplasticity

Close Range Explosive Loading on Steel Column in the Framework of Anisotropic Viscoplasticity

Application verification of blast mitigation through the use of thuja hedges

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