Using Perforated Plates as a Blast Wave Shielding Technique for Application to Tunnels

Abstract:

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Tunnels are vulnerable to devastating explosions, due to the concentration of explosive energy that would be many times greater than in an unconfined blast. One way to mitigate the damage resulting from an explosion is to disrupt the blast wave as it propagates along a tunnel. This paper presents the results of an investigation into the performance of perforated plates as a blast wave mitigation method in tunnel-like structures. Plastic explosive was detonated at the open end of a small-scale rigid steel tube and the blast wave propagated down the tube towards a thin, steel target plate. Increasing the separation distance between the perforated plate and target plate decreased the target plate deformation and increased the impulse at which tearing initiated. Large plastic displacement of the perforated plates was observed. Ansys Autodyn was used to model the experiments and provide additional insight into the blast wave propagation.

Info:

Periodical:

Edited by:

Ezio Cadoni and Marco di Prisco

Pages:

467-472

DOI:

10.4028/www.scientific.net/AMM.82.467

Citation:

G. Langdon et al., "Using Perforated Plates as a Blast Wave Shielding Technique for Application to Tunnels", Applied Mechanics and Materials, Vol. 82, pp. 467-472, 2011

Online since:

July 2011

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Price:

$35.00

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