水下近场爆炸冲击波与射流载荷联合作用分析方法

郭 娅;唐文勇;郑绍文;李德聪;苏怡然

振动与冲击 ›› 2014, Vol. 33 ›› Issue (20) : 26-30.

PDF(1762 KB)
PDF(1762 KB)
振动与冲击 ›› 2014, Vol. 33 ›› Issue (20) : 26-30.
论文

水下近场爆炸冲击波与射流载荷联合作用分析方法

  • 郭 娅1,唐文勇1,郑绍文2,李德聪2,苏怡然1
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Simulation method of underwater near-field shock wave and jet loadcombined effect

  • GUO Ya1,TANG Wen-yong1,ZHENG Shao-wen2,LI De-cong2,SU Yi-ran1
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摘要

针对舰船水下近场爆炸,提出综合考虑冲击波载荷与射流载荷的分析方法。对水下近场爆炸气泡脉动过程进行数值模拟,建立射流冲击计算模型,进而简化射流载荷,在冲击波阶段流固耦合模拟结束后自动添加射流载荷,形成完整水下近场爆炸过程的计算流程。建立舷侧板架结构有限元模型,采用MSC.Dytran软件进行流固耦合数值模拟验证方法的可行性。该方法综合考虑冲击波与射流载荷对结构作用,能较真实模拟水下近场爆炸过程,具有一定工程意义及参考价值。

Abstract

A method considering both the shock wave and jet load is proposed for the ship underwater near-field explosion. Firstly, the numerical simulation of near-field underwater explosion bubble motion process is being carried out to establish the jet impact model, and then the jet load is simplified. Jet load is automatically added to the fluid-structure coupling simulation model after the shock wave phase to form a complete calculation process of the underwater near-field explosion process. Finally, a shell frame structure finite element model simulated by the MSC.Dytran software is established. This numerical example validates the feasibility of the method. The proposed method considering both the shock wave load and jet load at the same time is a more realistic simulation of the underwater near-field explosion process.

关键词

水下近场爆炸 / 冲击波 / 射流 / 结构动力响应

Key words

underwater near-field explosion / shock wave / jet / structure dynamic response

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导出引用
郭 娅;唐文勇;郑绍文;李德聪;苏怡然. 水下近场爆炸冲击波与射流载荷联合作用分析方法[J]. 振动与冲击, 2014, 33(20): 26-30
GUO Ya;TANG Wen-yong;ZHENG Shao-wen;LI De-cong;SU Yi-ran. Simulation method of underwater near-field shock wave and jet loadcombined effect[J]. Journal of Vibration and Shock, 2014, 33(20): 26-30

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