Shekhar, V.R., von Klemperer, C.J. orcid.org/0000-0001-7561-8989 and Langdon, G.S. orcid.org/0000-0002-0396-9787 (2023) The damage and impulse transfer characteristics of flexible steel V-structures with large bend radii. Applied Sciences, 13 (3). p. 1293.
Abstract
This paper reports results from an experimental and computational study on the influence of bend radius and internal angle on the damage and impulse transfer characteristics of flexible steel V-structures subjected to localized explosion loading. This issue has bearing on the manufacturing of V-hulls used for Mine Resistant Ambush Protected vehicles used around the world. Global impulse transfer, damage and transient deformation were measured during small-scale explosive detonations on 1:8-scale V-structures. The work found that increasing the bend radius to values that can be used in practical manufacturing generated damage that was less localized than the damage observed in V-structures with tighter bend radii. High-speed imaging was able to measure transient deformation that was maximal in the centre, and lower elastic post-peak vibration magnitudes at high charge masses. The impulse transfer increased as the bend radius increased and the internal V-angle increased. Since V-structures with tighter bend radii exhibit less permanent deformation and higher deformation gradients, they will be more prone to localized ruptures when deployed for blast protection, whereas structures with larger tip radii will need a larger region of the V-structure repaired after a blast event but may be less prone to rupturing when the blast loading is localized.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2023 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
Keywords: | explosive charge; structural response; V-structures; blast testing; numerical modelling; blast impulse; deformation; transient behaviour |
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 Engineering and Physical Sciences Research Council EP/G042861/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Jan 2023 17:04 |
Last Modified: | 20 Jan 2023 17:04 |
Published Version: | http://dx.doi.org/10.3390/app13031293 |
Status: | Published |
Publisher: | MDPI AG |
Refereed: | Yes |
Identification Number: | 10.3390/app13031293 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:195516 |