Analysis of the damage load of the underwater contact explosion on multi-layered defend cabins

Chen Pengyu; Hou Hailiang; Wu Linjie; Zhu Xi

doi:10.11883/1001-1455(2017)02-0283-08

Volume 37 Issue 2

Mar. 2017

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Article Navigation > Explosion And Shock Waves > 2017 > 37(2): 283-290

Chen Pengyu, Hou Hailiang, Wu Linjie, Zhu Xi. Analysis of the damage load of the underwater contact explosion on multi-layered defend cabins[J]. Explosion And Shock Waves, 2017, 37(2): 283-290. doi: 10.11883/1001-1455(2017)02-0283-08

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Chen Pengyu, Hou Hailiang, Wu Linjie, Zhu Xi. Analysis of the damage load of the underwater contact explosion on multi-layered defend cabins[J]. Explosion And Shock Waves, 2017, 37(2): 283-290. doi: 10.11883/1001-1455(2017)02-0283-08

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Analysis of the damage load of the underwater contact explosion on multi-layered defend cabins

doi: 10.11883/1001-1455(2017)02-0283-08

Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, Hubei, China

Received Date: 2015-07-20
Rev Recd Date: 2015-11-11
Publish Date: 2017-03-25

Abstract

Abstract

To improve the design of the underwater multi-layered protective bulkhead structure, we carried out several simulations to investigate the characteristics of the damaging load on the void cabin with a multi-layered protective bulkhead subjected to underwater contact explosion. We adopted a typical three-tank structure model for our examination of the characteristics, conducted their analysis using the Dytran software, obtained a simplified model of the load, and derived by fitting the calculation formula of the quasi-static pressure of the load in the smooth pulse stage in the void cabin. The results from the calculation show that the damaging load in the void cabin can be characterized as two stages on a time scale, i.e. the air expansion diffusion stage and the smooth pulse stage, and as two areas in spatial distribution, i.e. the normal reflection area and the Mach reflection area. The loads on the normal reflection area are the initial shock-wave load followed by the quasi-static gas pressure and those on the Mach reflection area are mainly quasi-static gas pressure.
- underwater contact explosion,
- explosion load,
- quasi-static pressure,
- characteristics of damaging load

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