The response of mild steel and armour steel plates to localised air-blast loading-comparison of numerical modelling techniques
File(s)
Accepted version
Author(s)
Mehreganian, N
Louca, LA
Langdon, GS
Curry, RJ
Abdul-Karim, N
Type
Journal Article
Abstract
This paper presents a comparative study of numerical, experimental and empirical techniques on the effect of localised air blast loads on mild steel and armour steel plates. The blast load effects on monolithic plates have been accounted for by using different approaches provided in the Finite Element hydrocode ABAQUS 6.13, namely an Eulerian Lagrangian and a Coupled Eulerian Lagrangian model. In the first model, the air and the explosive were modelled using multi-material Eulerian grids while the plate was modelled using a rigid Lagrangian mesh, while in the second model the rigid target was replaced with deformable plate.
The transient deformation of the plate, strain localisation, pressure distribution on the plate have been investigated in the FE models, which have been validated against small scale experimental data for a limited range of charge sizes for both the mild steel and armoured steel. Despite the lower deflection of armour steel compared to mild steel plates, both plates were shown to undergo rupture upon similar charge mass and stand-off. For this purpose, a non-dimensional analysis was carried out with consideration of stand-off distance and slenderness ratio to predict the rupture impulse.
The transient deformation of the plate, strain localisation, pressure distribution on the plate have been investigated in the FE models, which have been validated against small scale experimental data for a limited range of charge sizes for both the mild steel and armoured steel. Despite the lower deflection of armour steel compared to mild steel plates, both plates were shown to undergo rupture upon similar charge mass and stand-off. For this purpose, a non-dimensional analysis was carried out with consideration of stand-off distance and slenderness ratio to predict the rupture impulse.
Date Issued
2018-05-01
Date Acceptance
2018-01-18
Citation
International Journal of Impact Engineering, 2018, 115 (1), pp.81-93
ISSN
0734-743X
Publisher
Elsevier
Start Page
81
End Page
93
Journal / Book Title
International Journal of Impact Engineering
Volume
115
Issue
1
Copyright Statement
© 2018 Elsevier Ltd. All rights reserved. This manuscript is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence http://creativecommons.org/licenses/by-nc-nd/4.0/
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000426408800009&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Technology
Engineering, Mechanical
Mechanics
Engineering
Blast loading
Numerical techniques
Transient response
Steel
Permanent deflection
THIN PLATES
STRUCTURAL RESPONSE
BOUNDARY-CONDITIONS
DYNAMIC-RESPONSE
SQUARE PLATES
PART II
DEFORMATION
PREDICTIONS
PERFORMANCE
EXPLOSIONS
Publication Status
Published
Date Publish Online
2018-01-31