Details
| Original language | English |
|---|---|
| Article number | 105094 |
| Journal | International Journal of Impact Engineering |
| Volume | 194 |
| Early online date | 22 Aug 2024 |
| Publication status | E-pub ahead of print - 22 Aug 2024 |
Abstract
In the face of rapidly evolving challenges, new protection techniques against blast waves generated by high explosive detonations must be identified. The protection of vehicle floors is particularly relevant, especially against improvised explosive devices (IED), as these are challenging to detect. In this paper, investigations on fluid-filled sacrificial claddings are presented. Classical sacrificial claddings aim at limiting the deflection of the target by dissipating the blast wave energy through the core plastic or brittle deformation. On the contrary, fluid-filled sacrificial claddings are systems which aim at limiting the deflection of the target by extracting energy from the system and modifying the load distribution on the target. A new experimental set-up, designed for this investigation, is presented. Based on pressure signals, high speed-imaging and numerical simulations on LS-DYNA, it is shown that the ability to extract energy from the system is directly linked to the freedom of displacement of the fluid. It is also shown that at the same time, higher fluid displacement and well-designed boundary conditions lead to higher impulse spreading on the target.
Keywords
- Blast protection, Cladding, Ejection, Fluids
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Automotive Engineering
- Engineering(all)
- Aerospace Engineering
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanics of Materials
- Engineering(all)
- Mechanical Engineering
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In: International Journal of Impact Engineering, Vol. 194, 105094, 12.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - A numerical and experimental approach to blast protection with fluids, effect of impulse spreading
AU - Rigoulet, Tatiana
AU - Blanc, Ludovic
AU - Daghia, Federica
AU - Wriggers, Peter
N1 - Publisher Copyright: © 2024 Elsevier Ltd
PY - 2024/8/22
Y1 - 2024/8/22
N2 - In the face of rapidly evolving challenges, new protection techniques against blast waves generated by high explosive detonations must be identified. The protection of vehicle floors is particularly relevant, especially against improvised explosive devices (IED), as these are challenging to detect. In this paper, investigations on fluid-filled sacrificial claddings are presented. Classical sacrificial claddings aim at limiting the deflection of the target by dissipating the blast wave energy through the core plastic or brittle deformation. On the contrary, fluid-filled sacrificial claddings are systems which aim at limiting the deflection of the target by extracting energy from the system and modifying the load distribution on the target. A new experimental set-up, designed for this investigation, is presented. Based on pressure signals, high speed-imaging and numerical simulations on LS-DYNA, it is shown that the ability to extract energy from the system is directly linked to the freedom of displacement of the fluid. It is also shown that at the same time, higher fluid displacement and well-designed boundary conditions lead to higher impulse spreading on the target.
AB - In the face of rapidly evolving challenges, new protection techniques against blast waves generated by high explosive detonations must be identified. The protection of vehicle floors is particularly relevant, especially against improvised explosive devices (IED), as these are challenging to detect. In this paper, investigations on fluid-filled sacrificial claddings are presented. Classical sacrificial claddings aim at limiting the deflection of the target by dissipating the blast wave energy through the core plastic or brittle deformation. On the contrary, fluid-filled sacrificial claddings are systems which aim at limiting the deflection of the target by extracting energy from the system and modifying the load distribution on the target. A new experimental set-up, designed for this investigation, is presented. Based on pressure signals, high speed-imaging and numerical simulations on LS-DYNA, it is shown that the ability to extract energy from the system is directly linked to the freedom of displacement of the fluid. It is also shown that at the same time, higher fluid displacement and well-designed boundary conditions lead to higher impulse spreading on the target.
KW - Blast protection
KW - Cladding
KW - Ejection
KW - Fluids
UR - http://www.scopus.com/inward/record.url?scp=85202290920&partnerID=8YFLogxK
U2 - 10.1016/j.ijimpeng.2024.105094
DO - 10.1016/j.ijimpeng.2024.105094
M3 - Article
AN - SCOPUS:85202290920
VL - 194
JO - International Journal of Impact Engineering
JF - International Journal of Impact Engineering
SN - 0734-743X
M1 - 105094
ER -