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Abstract
To explore the cumulative damage law of near-field underwater explosions on the side of the ship structure, the multi-cabin model of the shipboard local structure is designed and applied to close-in underwater explosion experiments with different explosive masses and model conditions. The pressure load of the explosion shock wave near the water surface is obtained and analyzed. The damage results, such as the damage pattern of the model and the damage range of cabins, are acquired. The comprehensive comparison shows that: the secondary explosion on the side has a significant cumulative damage effect; the damage pattern of the structure is closely related to the proportional distance of the explosion. The damaged power of a single large charge explosion on the shipboard is bigger than the cumulative damage caused by two small explosions. The results of this study can provide a reference for the research on the damage and protection of the ship.
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Details
1 School of Mechanical and Electrical Engineering, Beijing Institute of Technology , Beijing , China
2 Aviation Ammunition Research Institute of China North Industries Group , Harbin, Heilongjiang , China
3 State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology , Beijing , China