Qi, R., Langdon, G.S. orcid.org/0000-0002-0396-9787, Cloete, T.J. et al. (1 more author) (2020) Behaviour of a blast-driven ball bearing embedded in rear detonated cylindrical explosive. International Journal of Impact Engineering, 146. 103698. ISSN 0734-743X
Abstract
This paper presents insights into the flight characteristics of a ball bearing embedded in a rear detonated cylindrical charge, which represents an idealised piece of shrapnel from an improvised explosive device. A novel experimental technique was developed to quantify the loading from a blast-driven ball bearing. The impulse contributions from the blast pressure and the ball bearing impact were separately identifiable in the experimental data. Computational simulations, validated using experimental data, were used to elucidate additional detail about the momentum transfer and damage in the ball bearings during the blast event. The results show the critical influence of charge mass and aspect ratio on the development of the detonation pressure profile, its interaction with the embedded bearing, and the flight characteristics of the bearing. Length-to-diameter ratios below a critical value were more efficient in transferring momentum to the embedded bearings. These findings provide unique and detailed insights that will prove valuable to blast protection engineers considering the effects of embedded projectiles in improvised explosive devices.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 Elsevier. This is an author produced version of a paper subsequently published in International Journal of Impact Engineering. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
Keywords: | Shrapnel behaviour; Improvised explosive devices; Blast loading; Explosive impulse; Blast response |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Funding Information: | Funder Grant number National Research Foundation (South Africa) 111737 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 25 Aug 2020 13:31 |
Last Modified: | 27 Aug 2021 00:38 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.ijimpeng.2020.103698 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:164808 |
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Filename: IJIE Qi Langdon et al IJIE Aug final accepted version.pdf
Licence: CC-BY-NC-ND 4.0