为探究典型破片载荷作用下船用燃油柜毁伤效应，构建了破片侵彻燃油柜的数值仿真模型，分析了破片对燃油柜的侵彻物理过程，分析了破片在燃油中的空泡传递规律，通过线性回归方法得到了燃油柜前面板在不同角度下的最小穿透动能及极限穿透速度。探究了破片速度、入射角度以及燃油柜充液率对燃油柜毁伤效应的影响。结果表明，随着破片速度增加，燃油柜前后面板最大挠度增大，形成的空泡尺寸增大；随着破片入射角增大，燃油柜后面板挠度变小，燃油柜后面板最大挠度位置逐渐上移；燃油柜充液率以50%为分界线，在充液率50%以上时，燃油柜前后面板最大挠度变形区别不大，50%充液率在挠度变形以及破片速度变化有明显区别。
In order to explore the damage effect of marine fuel tank under typical fragment load, a numerical simulation 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 increases, 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 deformation and fragmentation speed change.
2024,46(12): 30-38 收稿日期：2023-08-11
DOI：10.3404/j.issn.1672-7649.2024.12.006
分类号：U664.8
基金项目：国家自然科学基金资助项目（52201334）
作者简介：叶龙学(1995-),男,硕士,研究方向为舰船结构设计
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