Waddoups, R. orcid.org/0000-0002-2241-3784, Clarke, S., Curry, R. et al. (6 more authors) (2024) Validation of numerical modelling of explosive ground shock propagation in dry sand with digital image correlation experiments. In: Proceedings of The 19th International Symposium on Interaction of the Effects of Munitions with Structures (ISIEMS). 19th International Symposium on Interaction of the Effects of Munitions with Structures (ISIEMS), 09-13 Dec 2024, Bonn, Germany. International Symposium on Interaction of the Effects of Munitions with Structures (ISIEMS)
Abstract
Explosions from buried charges generate compressive stress waves, commonly referred to as ground shock, which displace and accelerate structures located both underground and on the surface. In this study, the effects of ground shock on a simplified buried structure have been recorded experimentally through digital image correlation from stereo high-speed video cameras at one hundred thousand frames per second, with this used to validate a numerical model.
This testing utilised a steel pipe with a clamped aluminium base plate (to represent a deformable structure), filled with varying depths of Leighton Buzzard sand. From the DIC data, displacement-time histories were extracted from an area of 380 x 160mm of the base plate (approximately 3500 individual locations), allowing for high spatial and temporal resolutions for comparison against modelled outputs.
Numerical modelling in LS-Dyna, utilising an MMALE scheme, was found to capture the shock propagation well, with good agreement between experimental and numerical findings, particularly at close stand-offs. As stand-off increased, mass soil movement had a larger influence on deformation of the structure, which the model struggled to capture effectively.
Metadata
Item Type: | Proceedings Paper |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 ISIEMS. This is an author-produced version of a paper subsequently published in Proceedings of The 19th International Symposium on Interaction of the Effects of Munitions with Structures (ISIEMS). Uploaded with permission from the copyright holder. |
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) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 03 Jan 2025 17:20 |
Last Modified: | 03 Jan 2025 17:20 |
Published Version: | https://www.bundeswehr.de/en/organization/infrastr... |
Status: | Published |
Publisher: | International Symposium on Interaction of the Effects of Munitions with Structures (ISIEMS) |
Refereed: | Yes |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:220880 |