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舰船水下爆炸局部气穴效应理论模型研究 被引量:1

Fluid-Structure Interaction Model for Local Cavitation in UNDEX Analysis
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摘要 在舰船遭受水下爆炸的过程中,船体水下部分的外板与水中冲击波的相互作用将产生局部气穴效应。这种效应有可能导致舰船结构和设备上的二次加载现象,造成更严重的破坏。针对水下爆炸局部气穴效应中的非线性流固耦合现象,建立简化一维冲击波—浮体—局部气穴理论模型,分析了水中冲击波与浮体之间相互作用产生局部气穴的机理,推导局部气穴产生、发展和闭合过程时间和位置的公式,为进一步研究局部气穴现象对水下爆炸冲击环境下的舰船及其设备冲击响应的影响提供了理论依据。 Local cavitation effect is one of the most important non-linear loads in ship underwater explosion (UNDEX) analysis. Reloading effect due to the local cavitation may cause further damage to the structure and equipments. In this paper, a one dimensional non-linear fluid-structure interaction considering local cavitation model is presented for warship UNDEX analysis. The closure of local cavitation are studied theoretically. mechanics related to the generation, propagation and
出处 《中国造船》 EI CSCD 北大核心 2012年第2期122-129,共8页 Shipbuilding of China
关键词 舰船水下爆炸 局部气穴效应 流固耦合 underwater explosion local cavitation effect fluid-structure interaction
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