Reduced-Scale Experiment Study on the Protective Mechanism of Foam Coating Against Underwater Explosion Bubble Jet

DU Zhipeng; ZHANG Lei; CHEN Yong; HUA Hongxing

doi:10.21656/1000-0887.420367

Volume 43 Issue 5

May 2022

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Article Navigation > Applied Mathematics and Mechanics > 2022 > 43(5): 569-576

DU Zhipeng, ZHANG Lei, CHEN Yong, HUA Hongxing. Reduced-Scale Experiment Study on the Protective Mechanism of Foam Coating Against Underwater Explosion Bubble Jet[J]. Applied Mathematics and Mechanics, 2022, 43(5): 569-576. doi: 10.21656/1000-0887.420367

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Reduced-Scale Experiment Study on the Protective Mechanism of Foam Coating Against Underwater Explosion Bubble Jet

doi: 10.21656/1000-0887.420367

1.
Naval Research Institute of PLA, Beijing 100161, P.R.China
2.
State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, Shanghai 200240, P.R.China

Received Date: 2021-11-29
Rev Recd Date: 2022-04-21

Available Online: 2022-05-09

Publish Date: 2022-05-15

Abstract

Abstract

Underwater explosion poses a serious threat to underwater structures. Flexible coatings or sandwich plates can reduce the underwater explosion impact responses of underwater structures, and make a research hotspot. Previous studies focused on the protective mechanism of the coating against shock waves, which is suitable for underwater explosion at a long distance. Besides the shock wave, the high-speed water jet towards the structure produced by explosion bubble collapse, is more deadly in the short-distance underwater explosion. In view of this situation, based on the dimensional principle, the reduced-scale similarity relationship was deduced. Through the reduced-scale-model underwater explosion test, it is found that, the cavitation micro-bubble group on the surface of the foam coating interferes with the formation process of the explosion bubble collapse high-speed water jet. The protection mechanism of the foam coating against the underwater explosion bubble collapse water jet for coated steel plates was put forward.
- foam coating,
- underwater explosion,
- bubble jet,
- protective mechanism,
- reduced-scale experiment

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References(15)

References

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