摘要随着科技与军事的发展，在现代海战中，各国使用的导弹都具有精度高、破坏力 强的特点。对作战舰船的强度和安全性提出了更高的要求，为了提高舰船在现代海战 中的生命力，增强舰船舷侧防护结构的抗爆性一直都是各个国家的研究重点。但是各 国对舰船舷侧结构抗爆性的研究多集中于水下爆炸，对于空气中爆炸载荷对舷侧结构 的破坏性研究较少，存在很多不足。所以开展在空中爆炸载荷作用下舰船舷侧结构的 抗爆性研究，对提升舰船的生命力具有举足轻重的意义。 79361

舰船舷侧防护结构在空中爆炸冲击波载荷作用下的动态响应是一个十分复杂的 非线性过程，其中涉及到了动力学，爆炸力学等很多学科，属于工程力学的研究范畴。 本论文首先在研究了空气爆炸基本理论的基础上，采用有限元仿真技术，对单层板和 双层板在爆炸载荷作用下的动态响应过程进行了数值模拟，并且对计算结果得出的位 移、速度和加速度进行研究分析。为了研究各种参数对板的抗爆性能的影响，还改变 了板厚和爆距。最后，建立了一个较为复杂的舷侧防护结构模型，采用 LS-DYNA 有限 元分析软件对舷侧结构模型在爆炸载荷作用下的动态模响应进行了模拟，研究并分析 了舰船舷侧结构在爆炸载荷作用下的变形以及破坏形式。 

通过本文对舷侧防护结构在空爆载荷作用下动态响应的研究，发现板厚，爆距以 及舷侧结构的隔板设计对其抗爆性均有影响，在此基础上，提出了几条增强舷侧防护 结构强度和抗爆性的建议。 

毕业论文关键词：空中爆炸；舷侧结构；冲击波；抗爆性能

ABSTRACT With the development of technology and military, in the modern warfare, the missiles used by all the countries have the characteristics of high precision and strong destructive force。 It puts forward higher requirements for the strength and security of the combat ship。 In order to improve the survivability of warship in modern naval battle, Enhanced the blast resistance of broadside defensive structure has always been the research focus of various countries。 But the study of warship shipboard structure of all countries are more concentrated in the underwater explosion, for the studies on the destructive side structure of explosion  in  the air  are less, and a lot of  problems and shortages are existing。 So  the

great significance for improving the survivability of warship。

The dynamic response of warship broadside in the air explosion shock wave  loading is a very complicated nonlinear process, which involves the dynamics, explosion mechanics and many other disciplines, belongs to the scope of the study of Engineering Mechanics。 This paper first studied the basic theory of air explosion, and used the finite element simulation technology to simulate the dynamic response process of single plate and double plate under explosive loading, studied and analyzed the result of the displacement, velocity and acceleration。 In order to study the influence of various parameters to blast resistance on the plate, but also changed the plate thickness and the explosion distance。 Finally, established a more complex model of broadside protective structure, Using LS-DYNA finite element analysis software of side structure model of dynamic modulus under explosion load response was simulated, researched and analyzed the deformation of broadside structure under explosive loading and destroy form。

Through the study on the dynamic response of broadside in air blast loads, we found that the thickness and the explosion distance and the design of broadside structure have effect on the blast resistance。 On this basis, put forward several suggestions to enhanced the strength and the blast resistance of broadside protection structure。