Formation Method of Planar Shock Waves in Underwater Explosions Using Small Charges inside a Tube and Its Applications

XU Wei-zheng; HUANG Yu; LI Ye-xun; ZHAO Hong-tao; ZHENG Xian-xu

doi:10.11993/j.issn.1673-1948.2022.03.018

Volume 30 Issue 3

Jul 2022

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XU Wei-zheng, HUANG Yu, LI Ye-xun, ZHAO Hong-tao, ZHENG Xian-xu. Formation Method of Planar Shock Waves in Underwater Explosions Using Small Charges inside a Tube and Its Applications[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 405-412. doi: 10.11993/j.issn.1673-1948.2022.03.018

Citation:

XU Wei-zheng, HUANG Yu, LI Ye-xun, ZHAO Hong-tao, ZHENG Xian-xu. Formation Method of Planar Shock Waves in Underwater Explosions Using Small Charges inside a Tube and Its Applications[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 405-412. doi: 10.11993/j.issn.1673-1948.2022.03.018

Citation:

XU Wei-zheng, HUANG Yu, LI Ye-xun, ZHAO Hong-tao, ZHENG Xian-xu. Formation Method of Planar Shock Waves in Underwater Explosions Using Small Charges inside a Tube and Its Applications[J]. Journal of Unmanned Undersea Systems, 2022, 30(3): 405-412. doi: 10.11993/j.issn.1673-1948.2022.03.018

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Formation Method of Planar Shock Waves in Underwater Explosions Using Small Charges inside a Tube and Its Applications

doi: 10.11993/j.issn.1673-1948.2022.03.018

Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang 621999, China

Received Date: 2022-02-28
Accepted Date: 2022-05-06
Rev Recd Date: 2022-03-18

Available Online: 2022-07-18

Abstract

Abstract

Shock waves, bubbles, and diffraction effects during underwater explosions, as well as the coupling of these effects, make the investigation of underwater explosion damage complicated. In this paper, an experimental method for forming planar shock waves underwater using small charges inside a tube is presented to decouple these effects. Numerical simulations and theoretical models are used to explore the attenuation rules of planar shock waves in a tube. It is determined that planar shock waves with exponential attenuation forms can be generated by placing the charge at one end of the tube to achieve end-plane detonation. Theoretical results combined with overpressure peak versus distance curves and shock wave location versus time curves coincide well with simulation results. Applications of the proposed experimental method include the analysis of damage effects on typical structures and exploration of fluid-solid coupling mechanisms. The presented results also provide guidance for the damage evaluation of underwater explosions.
- underwater explosion,
- planer shock wave,
- impact loading,
- fluid-solid coupling

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References(19)

References

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