Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs

Explosive devices represent a significant threat to military and civilian structures. Specific design procedures have to be followed to account for this and ensure buildings will have the capacity to resist the imposed pressures. Shrapnel can also be produced during explosions and the resulting impa...

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Main Authors: Del Linz, Paolo, Fan, Sau Cheong, Lee, C. K.
Other Authors: School of Civil and Environmental Engineering
Format: Article
Language:English
Published: 2016
Subjects:
Online Access:https://hdl.handle.net/10356/84669
http://hdl.handle.net/10220/41911
http://www.lajss.org/index.php/LAJSS/article/view/2516
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-846692020-03-07T11:43:35Z Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs Del Linz, Paolo Fan, Sau Cheong Lee, C. K. School of Civil and Environmental Engineering Blast impact Explosive devices represent a significant threat to military and civilian structures. Specific design procedures have to be followed to account for this and ensure buildings will have the capacity to resist the imposed pressures. Shrapnel can also be produced during explosions and the resulting impacts can weaken the structure, reducing its capacity to resist the blast pressure wave and potentially causing failures to occur. Experiments were performed by the Defence Science and Technology Agency (DSTA) of Singapore to study this combined loading phenomenon. Slabs were placed on the ground and loaded with approximately 9 kg TNT charges at a standoff distance of 2.1 m. Spherical steel ball bearings were used to reproduce the shrapnel loading. Loading and damage characteristics were recorded from the experiments. A finite element analysis (FEA) model was then created which could simulate the effect of combined shrapnel impacts and blast pressure waves in reinforced concrete slabs, so that its results could be compared to experimental data from the blast tests. Quarter models of the experimental concrete slabs were built using LS-Dyna. Material models available in the software were employed to represent all the main components, taking into account projectile deformations. The penetration depth and damage areas measured were then compared to the experimental data and an analytical solution to validate the models. Published version 2016-12-21T03:29:15Z 2019-12-06T15:49:10Z 2016-12-21T03:29:15Z 2019-12-06T15:49:10Z 2016 Journal Article Del Linz, P., Fan, S. C., & Lee, C. K. (2016). Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs. Latin American Journal of Solids and Structures, 13(12), 2266-2282. 1679-7817 https://hdl.handle.net/10356/84669 http://hdl.handle.net/10220/41911 10.1590/1679-78252516 http://www.lajss.org/index.php/LAJSS/article/view/2516 en Latin American Journal of Solids and Structures This is an open-access article distributed under the terms of the Creative Commons Attribution License. 17 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Blast
impact
spellingShingle Blast
impact
Del Linz, Paolo
Fan, Sau Cheong
Lee, C. K.
Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs
description Explosive devices represent a significant threat to military and civilian structures. Specific design procedures have to be followed to account for this and ensure buildings will have the capacity to resist the imposed pressures. Shrapnel can also be produced during explosions and the resulting impacts can weaken the structure, reducing its capacity to resist the blast pressure wave and potentially causing failures to occur. Experiments were performed by the Defence Science and Technology Agency (DSTA) of Singapore to study this combined loading phenomenon. Slabs were placed on the ground and loaded with approximately 9 kg TNT charges at a standoff distance of 2.1 m. Spherical steel ball bearings were used to reproduce the shrapnel loading. Loading and damage characteristics were recorded from the experiments. A finite element analysis (FEA) model was then created which could simulate the effect of combined shrapnel impacts and blast pressure waves in reinforced concrete slabs, so that its results could be compared to experimental data from the blast tests. Quarter models of the experimental concrete slabs were built using LS-Dyna. Material models available in the software were employed to represent all the main components, taking into account projectile deformations. The penetration depth and damage areas measured were then compared to the experimental data and an analytical solution to validate the models.
author2 School of Civil and Environmental Engineering
author_facet School of Civil and Environmental Engineering
Del Linz, Paolo
Fan, Sau Cheong
Lee, C. K.
format Article
author Del Linz, Paolo
Fan, Sau Cheong
Lee, C. K.
author_sort Del Linz, Paolo
title Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs
title_short Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs
title_full Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs
title_fullStr Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs
title_full_unstemmed Modeling of Combined Impact and Blast Loading on Reinforced Concrete Slabs
title_sort modeling of combined impact and blast loading on reinforced concrete slabs
publishDate 2016
url https://hdl.handle.net/10356/84669
http://hdl.handle.net/10220/41911
http://www.lajss.org/index.php/LAJSS/article/view/2516
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