Water-filled containers placed externally on an armored vehicle offer a potentially low cost, light-weight, and simple technique to mitigate near-field explosive blast, although the use of a gap or standoff between the container and target has not been studied. This paper uses experimental testing and numerical simulations to characterize the influence of this container standoff on the mitigation of near-field blast effects. The addition of the container standoff was not found to generally increase the blast mitigation effect provided by water-filled containers on the deformation caused to a steel target plate. While the container standoff was found to enhance the spreading and shadowing blast mitigation mechanisms provided by the water-filled container, this was offset by an increase in blast loading due to the container being closer to the explosive charge. A new mitigation mechanism was identified as the time delay between the initial loading of the steel plate by the blast wave and the subsequent impact of water ejected from the container. The results from this work provide engineers guidance into the design of water-filled containers for near-field blast protection of armored vehicles.
Effect of Standoff on Near-Field Blast Mitigation Provided by Water-Filled Containers
Contributed by the Applied Mechanics Division of ASME for publication in the Journal of Applied Mechanics. Manuscript received January 14, 2019; final manuscript received March 17, 2019; published online April 12, 2019. Assoc. Editor: Yong Zhu. This work was prepared while under employment by the Government of Australia as part of the official duties of the author(s) indicated above, as such copyright is owned by that Government, which reserves its own copyright under national law.
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Bornstein, H., Di Placido, S., Ryan, S., Orifici, A. C., and Mouritz, A. P. (April 12, 2019). "Effect of Standoff on Near-Field Blast Mitigation Provided by Water-Filled Containers." ASME. J. Appl. Mech. July 2019; 86(7): 071003. https://doi.org/10.1115/1.4043258
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