ABAQUS水下爆炸载荷作用下舰船舷侧结构抗冲击性能研究
毕业论文关键词：舷侧结构；水下爆炸；动态响应；数值模拟；抗冲击性Abstract As the main attack weapon of naval battle, the life force is very important. The resist impact of the ship is directly related to the vitality of the ship, so how to improve the resist impact of the ship is of great significance. In this paper, the model of broadside defensive structure of a large-scale surface warship is used to study its defensive effect and dynamic responses under the actions of underwater explosions by using the non-linear finite approach. The specific contents of the thesis are as follows: First, in the reading massive literature foundation of hull structure under water explosion load under the action of dynamic response of the research methods and research status of detailed analysis. And this paper introduces the application of the physical phenomena and acoustic structure coupling theory of underwater explosion in underwater explosion. In detail introduced the command stream in ANSYS software to establish typical ship cabin and outboard flow process, and a detailed account of the detailed steps of numerical simulation in ABAQUS software. Finally, in order to validate the model established correctly modal analysis. And then through the control of drugs, from the explosion, the thickness of the board the three variables, contrast broadside plate and the inner plate of the response, the flank attack flameproof surface and back blast side response, vertical to the deck structure, floor, broadside plate response and broadside plate, floors, deck, bottom, response of the whole structure of the bottom plate, thus detailed studied resist impact of shipboard side, and some conclusions are drawn.
Key words: side structure; underwater explosion; dynamic response; numerical simulation; resist impact
目 录
第一章 绪论 . 1
1.1 研究目的及意义 .. 2
1.2.1 舰船在水下爆炸载荷作用下动响应研究方法 ... 2
1.2.2 舰船结构在水下爆炸载荷作用下动响应研究综述 ... 2
1.3 论文主要工作 .. 4
第二章 水下爆炸理论及声-结构耦合理论 ... 6
2.1 引言 .. 6
2.2 水下爆炸物理现象 .. 6
2.2.1 爆轰过程和冲击波 ... 6
2.2.2 水下爆炸冲击波 ... 7
2.2.3 冲击波压力峰值经验公式 ... 9
2.3 声-结构耦合理论 ... 10
2.3.1 引言 . 10
2.3.2 基本控制方程 . 10
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