基于耗能模型的超空泡射弹水下侵彻鱼雷等效关系研究

超空泡射弹是水下防御技术的研究热点之一。水下毁伤试验费用大，成本高，陆上等效试验是一种可能的替代方案。为此需要获得水下超空泡射弹侵彻条件下目标与相关材料的等效关系。以MK48-5鱼雷为对象，构建由壳体和14个关键部件组成的典型鱼雷结构模型。考虑水介质对侵彻的影响，将水下超空泡射弹侵彻鱼雷的过程分为两个阶段（a. 射弹侵彻水介质和鱼雷壳体，b. 射弹侵彻鱼雷内部关键部件）；建立水介质耗能模型和靶板耗能模型；依据极限穿透速度等效原则和能量等效原则，分别得出两个阶段目标和等效靶之间的靶板厚度关系；为了获得射弹垂直命中鱼雷不同方向及不同工况毁伤效果，需要对纵向侵彻全雷和横向侵彻鱼雷战雷段、控制段、燃料舱和后舱雷尾4个典型舱段分别进行研究；并基于此建立了水下侵彻和不同工况条件下射弹侵彻鱼雷的多层等效靶模型。

Research on the equivalent relationship of torpedo penetrated by underwater supercavitation projectile based on energy consumption model

Supercavitation projectile is one of the research hotspots of underwater defence technology. The cost of underwater damage test is so high that equivalent test on land is considered as a possible alternative. Therefore, it is necessary to obtain the equivalent relationship between the target and related materials under the condition of supercavitating projectile underwater penetration. Taking MK48-5 torpedo as the object, a typical torpedo structure model composed of shell and 14 key components is constructed. Considering the influence of aqueous medium on penetration, the process of underwater supercavitating projectile penetrated torpedo could be divided into two stages: (1) the projectile penetrated the aqueous medium and the torpedo shell, (2) the projectile penetrated key parts of the torpedo. The energy consumption model of aqueous medium and target plate are established. According to the principle of limit penetration velocity equivalence and energy equivalence, the relationship between target and equivalent target in two stages is obtained respectively. In order to obtain the damage effect of projectiles hitting torpedoes vertically in different directions and under different working conditions, it is necessary to study the four typical sections of torpedoe: warhead, control section, fuel tank and torpedo afterbody. Therefore, the multi-layer equivalent target models of underwater penetration and torpedo penetration under different conditions are established.