A study of explosive effects in close proximity to a submerged cylinder
A study of explosive effects in close proximity to a submerged cylinder
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DOI：
10.1016/j.ijimpeng.2007.01.007
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发表时间：
2008-04
影响因子：
5.1
通讯作者：
J. Brett;George Yiannakopolous
中科院分区：
文献类型：
--
作者：
J. Brett;George Yiannakopolous
利用加速度和压力测量以及高速成像技术研究了水下爆炸与附近钢柱的相互作用。圆柱与炸药装药之间的初始间距的变化产生不同的相互作用的情况下，在其中的圆柱的冲击波，气泡脉冲波，水喷射和气泡崩溃的响应可以进行研究。冲击波载荷在所有情况下都产生了显著的响应。来自脉动气泡的压力波是不太重要的载荷，产生的峰值速度约为冲击波引起的峰值速度的一半。然而，气泡在圆柱体上的破裂被认为是最严重的结构载荷，产生的峰值速度几乎是冲击波引起的峰值速度的两倍，并引起显著的塑性变形。
Measurements of acceleration and pressure together with high-speed imaging have been used to study the interaction of an underwater explosion with a nearby steel cylinder. Variation of the initial separation between the cylinder and explosive charge generated different cases of interaction in which the response of the cylinder to the shock wave, the bubble pulse wave, water jetting and bubble collapse could be studied. Shock wave loading generated a significant response in all cases. The pressure wave from the pulsating bubble was a less significant load, generating a peak velocity about half that caused by the shock wave. However the collapse of the bubble onto the cylinder was found to be the most severe structural load, generating a peak velocity almost twice that caused by the shock wave and causing significant plastic deformation.