Dynamic characteristics of bubbles near damaged boundary based on CEL method

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Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (1) : 99-106.

ZHANG Xiao, CUI Jie, LI Mingyuan, QIN Zikai

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Abstract

In order to study the damage or even fracture of ship hull caused by bubble secondary shock wave, the interaction mechanism between bubble and damaged boundary is studied. The damaged bulkhead is simplified as an elastic wall with a circular break. The bubble dynamics model of underwater explosion near the damaged boundary is established based on CEL method. The numerical results are compared with the model experimental results, which verify the effectiveness of the method established in this paper. On this basis, the effects of bubble jet, bubble volume, pulsating period and bubble on wall impact damage are studied, and the pulsating laws of bubbles under different break parameters and the characteristic laws of jet penetration, tear, etc. are proved. It provides theoretical and technical support for the research and development of high-energy weapons and the safety protection of damaged ships.

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underwater explosion / bubble dynamics / Damaged boundary / liquid-solid coupling

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ZHANG Xiao, CUI Jie, LI Mingyuan, QIN Zikai. Dynamic characteristics of bubbles near damaged boundary based on CEL method[J]. Journal of Vibration and Shock, 2024, 43(1): 99-106

References

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