本文采用声固耦合方法模拟水下中远场爆炸产生的冲击波载荷和气泡脉动对双层加筋圆柱壳的冲击响应。从不同工况水下爆炸载荷下的鞭状运动和关键部位冲击响应2个方面，研究了药量、爆距、水深、爆炸方位等参数对双层加筋圆柱壳结构响应的影响。研究表明，在中远场水下爆炸作用下，双层加筋圆柱壳在不同药量和爆距下鞭状运动的位移响应幅值和冲击环境谱加速度幅值变化较大，但其鞭状运动的位移响应曲线的周期变化不大。双层加筋圆柱壳在不同水深下，鞭状运动受到水下载荷周期性影响显著，但谱加速度幅值变化不大。双层加筋圆柱壳在不同爆炸方位下鞭状运动变化和冲击环境谱加速度分布受其影响显著。这项研究旨在为水下中远场爆炸作用下，水下航行体结构的抗冲击特性研究提供数据及理论支撑。
This article uses the acoustic solid coupling method to simulate the shock wave load and bubble pulsation generated by underwater mid to far field explosions on the impact response of a double layer reinforced cylindrical shell. The influence of parameters such as charge weight, explosion distance, water depth and explosion direction on the response of double stiffened cylindrical shells was studied from two aspects of whip movement and impact response of key parts under Underwater explosion loads under different working conditions. The research shows that the displacement response amplitude of the whip motion and the acceleration amplitude of the shock environment spectrum of the double-layer stiffened cylindrical shell under the action of the medium and far field Underwater explosion under different charge weight and detonation distance vary greatly, but the period of the displacement response curve of the whip motion does not change much. The whip like motion of a double layer reinforced cylindrical shell is significantly affected by the periodic underwater load at different water depths, but the amplitude of spectral acceleration does not change much. The whip movement and the spectral acceleration distribution of the shock environment of the double stiffened cylindrical shell under different explosion directions are significantly affected by it. This research aims to provide data and theoretical support for the study of the impact resistance characteristics of underwater vehicle structures under the action of mid to far field underwater explosions.
2024,46(8): 94-103 收稿日期：2023-5-15
DOI：10.3404/j.issn.1672-7649.2024.08.017
分类号：U663.2
作者简介：黄伟佳(1994-),男,硕士,助理工程师,研究方向为爆炸试验与毁伤评估等
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