空气隔层对水下爆炸冲击波的缓冲效应

发布时间：2018-06-18 02:39

本文选题：水下爆炸 + 空气隔层　；参考：《振动与冲击》2017年03期

【摘要】：由于水下爆炸对结构的破坏能力比空中爆炸要强得多,因此针对水下结构的防护越来越受到重视。根据一维应力波在不同介质交界面的透射反射理论,从理论上分析了低波阻抗介质(如空气)对水下爆炸冲击波传播的影响。通过建立含空气隔层的水下爆炸全耦合模型,考虑水下爆炸冲击波与空气隔层及爆轰产物的动态相互作用,研究了空气隔层对水下爆炸冲击波的缓冲效应,揭示了空气隔层的运动发展过程。同时分析了空气隔层厚度及位置对水下爆炸冲击波缓冲效应的影响。结果表明:空气隔层距防护对象越近,防护效果越佳,具有重要的工程应用价值。
[Abstract]:Since underwater explosion has much better damage ability than aerial explosion, more and more attention has been paid to the protection of underwater structure. According to the transmission reflection theory of one-dimensional stress wave at the interface of different media, the influence of low-wave impedance medium (such as air) on the propagation of underwater explosion shock wave is theoretically analyzed. By establishing a fully coupled model of underwater explosion with air barrier, considering the dynamic interaction between underwater explosion shock wave, air barrier layer and detonation product, the buffer effect of air barrier layer on underwater explosion shock wave is studied. The movement development process of air barrier is revealed. At the same time, the influence of the thickness and position of the air interlayer on the shock wave buffer effect of underwater explosion is analyzed. The results show that the closer the air barrier is to the protective object, the better the protective effect is, and it has important engineering application value.
【作者单位】：武汉大学水资源与水电工程科学国家重点实验室;
【基金】：国家自然科学基金项目(51125037;51509189) 中国博士后科学基金资助项目(2015M572197) 中央高校基本科研业务费专项资金资助(2042015KF0001)
【分类号】：O382.1

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