Experiments and Simulations on Explosion Loads of Close-Proximity Underwater Explosion

Feng Jiang An; Xu Li; Li Hui Dai; Yu Xia Zhang

Experiments and Simulations on Explosion Loads of Close-Proximity Underwater Explosion

Feng Jiang An, Xu Li, Li Hui Dai, Yu Xia Zhang

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

The shock wave and detonation gas of near field underwater explosion are investigated experimentally and numerically. A spherical TNT charge of radius 35mm is detonated in a 800 mm×800 mm water tank. The framing & scanning ultra-high-speed photography system is applied to obtain the trajectories of shock wave and detonation gas in its initial 80 microseconds. The arbitrary Lagrangian-Eulerian (ALE) method using LS-DYNA software is applied to simulate the processes of close-proximity underwater explosion for varied spherical charges. Comparisons with the experimental tests verify the results of numerical solutions. The engineering formulas of velocities and pressures for shock wave and detonation gas are proposed.

Original language	English
Pages (from-to)	91-94
Number of pages	4
Journal	Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology
Volume	37
Publication status	Published - 1 Dec 2017

Keywords

ALE method
Explosion load
Underwater explosion

Cite this

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abstract = "The shock wave and detonation gas of near field underwater explosion are investigated experimentally and numerically. A spherical TNT charge of radius 35mm is detonated in a 800 mm×800 mm water tank. The framing & scanning ultra-high-speed photography system is applied to obtain the trajectories of shock wave and detonation gas in its initial 80 microseconds. The arbitrary Lagrangian-Eulerian (ALE) method using LS-DYNA software is applied to simulate the processes of close-proximity underwater explosion for varied spherical charges. Comparisons with the experimental tests verify the results of numerical solutions. The engineering formulas of velocities and pressures for shock wave and detonation gas are proposed.",

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AU - An, Feng Jiang

AU - Li, Xu

AU - Dai, Li Hui

AU - Zhang, Yu Xia

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N2 - The shock wave and detonation gas of near field underwater explosion are investigated experimentally and numerically. A spherical TNT charge of radius 35mm is detonated in a 800 mm×800 mm water tank. The framing & scanning ultra-high-speed photography system is applied to obtain the trajectories of shock wave and detonation gas in its initial 80 microseconds. The arbitrary Lagrangian-Eulerian (ALE) method using LS-DYNA software is applied to simulate the processes of close-proximity underwater explosion for varied spherical charges. Comparisons with the experimental tests verify the results of numerical solutions. The engineering formulas of velocities and pressures for shock wave and detonation gas are proposed.

AB - The shock wave and detonation gas of near field underwater explosion are investigated experimentally and numerically. A spherical TNT charge of radius 35mm is detonated in a 800 mm×800 mm water tank. The framing & scanning ultra-high-speed photography system is applied to obtain the trajectories of shock wave and detonation gas in its initial 80 microseconds. The arbitrary Lagrangian-Eulerian (ALE) method using LS-DYNA software is applied to simulate the processes of close-proximity underwater explosion for varied spherical charges. Comparisons with the experimental tests verify the results of numerical solutions. The engineering formulas of velocities and pressures for shock wave and detonation gas are proposed.

KW - ALE method

KW - Explosion load

KW - Underwater explosion

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JO - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

JF - Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology

ER -

Experiments and Simulations on Explosion Loads of Close-Proximity Underwater Explosion

Abstract

Keywords

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