Influence of External Conditions on Implosion Shock Wave of Hollow Structure

MENG Lingcun; YAN Ming; DU Zhipeng; ZHANG Lei

doi:10.11858/gywlxb.20190849

Volume 34 Issue 4

Jul 2020

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Chinese Journal of High Pressure Physics > 2020 > 34(4): 044104.

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MENG Lingcun, YAN Ming, DU Zhipeng, ZHANG Lei. Influence of External Conditions on Implosion Shock Wave of Hollow Structure[J]. Chinese Journal of High Pressure Physics, 2020, 34(4): 044104. doi: 10.11858/gywlxb.20190849

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Influence of External Conditions on Implosion Shock Wave of Hollow Structure

doi: 10.11858/gywlxb.20190849

MENG Lingcun^{1, 2
,},
YAN Ming^{1,*
,
,},
DU Zhipeng²,
ZHANG Lei²

1.
School of Mechanical Engineering, Shenyang University of Technology, Shenyang 110870, Liaoning, China
2.
Naval Research Academy, Beijing 100161, China

Received Date: 24 Oct 2019
Rev Recd Date: 09 Nov 2019
Issue Publish Date: 25 Mar 2020

Abstract

Abstract

The hollow structure working in deep water is subjected to huge hydrostatic pressure. When it is suddenly crushed, it will explode and generate shock waves, and cause damages to the surrounding structure. Aiming at the problem that the implosion shock wave is affected unclearly by hydrostatic pressure and vacuum volume, the underwater implosion test of photomultiplier tube (PMT) was carried out. It was verified that the CEL coupling calculation method in ABAQUS satisfies the requirements of PMT implosion simulation accuracy, and then the effects of external hydrostatic pressure and vacuum volume of hollow structures on implosion shock waves were analyzed by simulation. The results show that with the increase of hydrostatic pressure and vacuum volume, the peak value of the shock wave increases linearly, and the farther away from the implosion center, the slower the increase of peak value of the shock wave. The pulse width of the shock wave remains basically unchanged with the increase of hydrostatic pressure, and decreases slowly with the increase of vacuum radius.
- underwater implosion,
- photomultiplier tube,
- mechanism of implosion,
- simulation of implosion,
- shock wave of implosion

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References

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Influence of External Conditions on Implosion Shock Wave of Hollow Structure

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