| 考虑空化效应的舰艇水下爆炸仿真研究 |
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| 引用本文： | 陈高杰,贾则,程素秋,王树乐,宗智.考虑空化效应的舰艇水下爆炸仿真研究[J].爆破,2012,29(2):1-3,25. |
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| 作者姓名： | 陈高杰 贾则 程素秋 王树乐 宗智 |
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| 作者单位： | 91439部队96分队,大连,116041;91439部队96分队,大连116041;大连理工大学工业装备结构分析国家重点实验室,大连116024;大连理工大学工业装备结构分析国家重点实验室,大连,116024 |
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| 摘 要： | 为了分析空化效应对舰艇水下爆炸冲击响应的影响。对一维Bleich—Sandler模型进行了数值仿真计算,验证了计算方法的正确性,分析了空化闭合二次加载产生的速度截断现象,并应用于二维中截面舰艇模型水下爆炸数值仿真。结果表明空化在冲击波到达结构表面后就会发生,空化闭合会产生显著的二次冲击加载作用。这在舰艇水下爆炸仿真计算中必须加以考虑。
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| 关 键 词： | 水下爆炸 数值仿真 空化效应 二次加载 |
Investigation on Simulation of Underwater Explosion Cavitation Surface Ship |
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| CHEN Gao-jie
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JIA Ze
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CHENG Su-qiu
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WANG Shu-le
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ZONG Zhi.Investigation on Simulation of Underwater Explosion Cavitation Surface Ship[J].Blasting,2012,29(2):1-3,25. |
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| Authors: | CHEN Gao-jie JIA Ze CHENG Su-qiu WANG Shu-le ZONG Zhi |
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| Affiliation: | 1.91439 Unit,Peoples Liberation Army of China,Dalian 116041,China; 2.The State Key Laboratory of Structure Analysis for Industrial Equipment, Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | To analyze cavitation effect of underwater explosion(UNDEX) to analyze effect of underwater explosion on surface ship shock response,numerical simulation of a one-dimensional Bleich—Sandler model was studied.The computing method was verified to be correct and a "secondary shock" derived from cavitation closure produced a velocity jump.The technology was utilized in a two-dimensional mid-section model of a surface ship.The result showed that cavitation effect started when the shock wave reached the structure,and cavitation closure generated distinct "secondary shock" load.Therefore,cavitations must be taken into account in the ship shock simulation. |
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| Keywords: | underwater explosion numerical simulation cavitation effect secondary shock |
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