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Shock and Vibration
Volume 2018, Article ID 1909872, 16 pages
https://doi.org/10.1155/2018/1909872
Research Article

A Study on Internal Explosion Testing of the “Rigid-Flexible-Rigid” Three-Layer Sealed Structure

State Key Laboratory of Disaster Prevention & Mitigation of Explosion & Impact, College of Defense Engineering, Army Engineering University of PLA, Nanjing, Jiangsu 210007, China

Correspondence should be addressed to Y. L. Xue; moc.kooltuo@88eux_lrak and D. G. Tang; moc.361@6026gdt

Received 18 August 2017; Revised 10 November 2017; Accepted 4 December 2017; Published 8 January 2018

Academic Editor: Marcello Vanali

Copyright © 2018 Y. L. Xue et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Multilayered combination of protective structures is an important means of effectively weakening the explosive shockwave. On this basis, a “rigid-flexible-rigid” three-layer sealed structure was proposed in this paper and two models for the sealed structure were designed. Meanwhile, internal explosion tests of the two models were conducted. One model used foam concrete as the energy absorbing material and the other used dense sand. The comparisons between the test results and the computed results obtained from the formulae were made, and the test results agreed well with the computed results. Test results showed that both models had favorable energy-dissipating capacity, and the model that used foam concrete as the energy absorbing material had a superior energy-dissipating capacity.