Research on the damage effects of marine fuel oil tank penetrated by a typical fragment
In order to explore the damage effect of marine fuel tank under typical fragment load,a numerical simula-tion model of fragment penetration into fuel tank was constructed,the physical process of fragment penetration into fuel tank was analyzed,and the law of cavitation transfer of fragment in fuel was analyzed.The minimum penetration kinetic energy and limit penetration velocity of the front panel of fuel tank at different angles were obtained by linear regression method.The effects of fragment velocity,incident angle and fuel tank filling rate on the damage effect of fuel tank are investigated.The results show that with the increase of fragment velocity,the maximum deflection of front and rear panels of fuel tank in-creases,and the cavitation size increases.With the increase of fracture angle,the deflection of fuel tank rear panel becomes smaller,and the maximum deflection position of fuel tank rear panel gradually moves upward.The fuel tank filling rate is 50％as the dividing line.When the filling rate is more than 50％,the maximum deflection deformation of the front and back panels of the fuel tank is not much different,and the 50％filling rate has a significant difference in the deflection deforma-tion and fragmentation speed change.
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