导　　师： 尹群;王珂

学科专业： 082401

授予学位： 硕士

作　　者： ;

机构地区： 江苏科技大学

摘　　要： 当今世界的历次海战中，舰船是主要的受攻击对象，半穿甲型反舰导弹能够轻易穿透舷侧板架在舱内爆炸，产生冲击波和高速破片，造成舰船的严重毁伤。舱壁结构因其在船体中的突出位置，是舰船的主要防护结构，其抗冲击能力对舰船生命力至关重要，因此，研究舰船舱壁结构在高速破片侵彻载荷下的动态响应以及防护性能，对改善舰船的抗侵彻能力和舰船生命力有着重要的工程意义，可为新型舱壁结构的优化设计提供参考。 本文在分析破片侵彻靶板理论的基础上，运用瞬态动力学分析软件，展开反舰导弹舱内爆炸后形成的高速破片对舱壁结构的侵彻作用研究。首先基于反舰导弹的简化模型，仿真模拟高速破片的形成和破片特性，并与经验公式进行比较，得到破片侵彻载荷工况；然后建立破片侵彻舰船舱壁结构的有限元技术，研究不同工况下舱壁结构的破坏特点、动态响应和吸能特性，比较分析载荷参数和结构参数对结果的影响；最后基于传统舱壁结构，设计多种双层舱壁结构型式，对比分析不同舱壁结构的抗侵彻性能，得到一种较优的双层舱壁结构型式。 本文主要研究工作如下： （1）阐述了侵彻相关的理论，其中包括侵彻特性的分类以及薄靶板的侵彻原理，该原理也适用于中厚靶板，为后续高速破片侵彻舰船舱壁结构的数值模拟研究提供了理论基础； （2）运用MSC.Dytran软件对反舰导弹在舰船舱内爆炸产生破片的整个过程进行了数值模拟，主要对破片的运动特性、形状统计以及破片质量的分布规律进行了研究，建立了破片的侵彻载荷工况； （3）研究了舰船舱壁结构在高速破片侵彻载荷作用下的有限元技术，讨论了侵彻模型的建模方法以及舱壁结构模型的简化过程，其中包括侵彻点位置和舱壁结构网格较优� In the sea battles of today's world, ship was attacked mainly. Semi-Armor-Piercing anti-ship missiles can penetrate the side grillage easily and explode in the cabin, generating shock waves and high-speed fragments, which can cause destructive damage to the ship. Bulkhead structure is the main protective structure of the ship because of its outstanding location, whose shock resistance ability is very important to the ship's life. Therefore, it is necessary to study the bulkhead structure's dynamic response and protective property under the penetration of high-speed fragment, which has vital engineering meaning to improve the ship's shock resistance ability and life and also provide reference for the new bulkhead structure optimization design. Based on the penetration theory of fragment on target, penetration of high-speed fragment caused by explosion of anti-ship missile in cargo on bulkhead structure was studied using transient dynamics software. Based on the simplified model of anti-ship missile, formation of high-speed fragment and its properties were numerical simulated firstly, and compared with empirical formula. Therefore, penetration load cases were obtained. Then finite element technique of the penetration of fragment on bulkhead structure was established. Also, failure feature, dynamic response and energy absorption of bulkhead structure under different load cases were researched. The effect of load and structure parameters on dynamic response results were analyzed. In the end, some types of double-layer bulkhead structures were designed based on the traditional single-layer bulkhead structure, whose anti-penetration performance were compared. A better type of double-layer bulkhead structure was obtained preliminarily. The main research contents are listed as follows: /(1/)Penetration theory was stated, including the classification of penetration features and penetration principle of thin target, which is also fit for moderate thickness target. The theory provides a theory foundation for the nu

关 键 词： 舱内爆炸 高速破片 侵彻 舰船新型舱壁结构型式

领　　域： [交通运输工程] [交通运输工程]