水下爆炸气泡及其对结构毁伤研究综述

发布时间：2018-06-04 12:41

本文选题：水下爆炸 + 气泡　；参考：《中国舰船研究》2016年01期

【摘要】：水下爆炸,特别是近场水下爆炸,会对舰船结构造成严重的毁伤,研究表明,水下爆炸气泡将与含初始毁伤的结构产生强烈的耦合效应,造成二次毁伤。水下爆炸气泡与自由面、壁面、弹性结构等不同边界的相互作用是流体力学和流固耦合领域的研究热点,有很多机理性问题亟待解决。围绕水下爆炸气泡对结构的毁伤,从实验研究、理论研究、数值研究等方面阐述该领域国内外的研究现状。在现有的研究动态中,仍存在着不足,一些问题仍需深入研究,例如,要研究水下爆炸冲击波对水中结构造成破口后,气泡与具有初始破口的不完整边界的耦合动力学特性,并计入结构的弹塑性、自由液面效应、气泡周围流场的可压缩性、气泡的初始形状以及气泡内部的温度变化,探索气泡的"腔吸现象"、射流特性及其载荷规律。
[Abstract]:Underwater explosion, especially near field underwater explosion, will cause serious damage to ship structure. The research shows that the bubble of underwater explosion will have strong coupling effect with the structure with initial damage, resulting in secondary damage. The interaction between bubble and free surface, wall surface and elastic structure is a hot topic in the field of hydrodynamics and fluid-solid coupling. There are many mechanism problems to be solved. According to the damage caused by underwater explosion bubbles, the present situation of research in this field is expounded from the aspects of experimental research, theoretical research and numerical research. In the existing research dynamics, there are still some shortcomings, and some problems still need to be deeply studied. For example, to study the coupling dynamic characteristics between bubbles and incomplete boundaries with initial opening after underwater blast wave creates a break in water structure. The elastoplasticity, free surface effect, compressibility of the flow field around the bubble, the initial shape of the bubble and the change of the temperature inside the bubble are taken into account to explore the "cavity suction phenomenon" of the bubble, the characteristics of the jet and its load law.
【作者单位】：哈尔滨工程大学船舶工程学院;
【基金】：国家自然科学基金资助项目(U1430236,51479041,51279038)
【分类号】：U674.70

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