不同类型炸药水下爆炸时冰层损伤特性研究

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振动与冲击 ›› 2022, Vol. 41 ›› Issue (9) : 189-198.

论文

不同类型炸药水下爆炸时冰层损伤特性研究

王莹，秦业志，王志凯，姚熊亮

作者信息 +

Damage characteristics of ice layer during underwater blasting of different types of explosives

WANG Ying, QIN Yezhi, WANG Zhikai, YAO Xiongliang

Author information +

文章历史 +

摘要

为了探究水下爆炸冲击波与气泡脉动载荷联合作用下冰层损伤特性以及不同类型含能炸药水下爆炸对冰层损伤特性，本文采用动力学分析软件LS-DYNA中的任意拉格朗日欧拉(ALE)法建立了计算水下爆炸气泡动力学模型及水下爆炸冰-水全耦合模型，考虑了冲击波载荷及复杂的气泡载荷耦合全过程；在此基础上，分析了烈性奥克托今炸药（简称HMX）及不同铝氧比黑索金炸药（简称RDX）对冰层损伤特性的影响。研究结果表明：计算模拟结果与试验结果吻合良好，验证了本文计算模型的有效性；揭示了水下爆炸冲击波和气泡载荷联合作用下的冰层损伤机理； HMX炸药对冰层的损伤威力更强，RDX(0.36)比RDX(0)、RDX(0.16)、RDX(0.63)对冰层产生的毁伤效应要强，其与TNT对冰层造成的毁伤效应强度接近。依据研究结果冲击波载荷是造成冰层损伤区域大小的主要毁伤元素，而气泡载荷主要影响冰层毁伤区域的破碎形态；根据不同毁伤目标应用特性，调节炸药配方比，改变冲击波能与气泡能的输出结构，可实现冰层的不同毁伤模式。

Abstract

To investigate the damage characteristics of ice sheet under the combination of underwater explosion and bubble pulsating load, and subjected to different energetic explosives underwater explosion loads, this paper uses the arbitrary Lagrange-Eule（ALE） method to establish the calculation of the underwater explosion bubble dynamic model and the underwater explosion ice-water fully coupled model, considering the coupling between the shock wave load and the complex bubble load. On this basis, the influence of different type explosives, such as the strong Octogen explosive (HMX) and different Al-Oxide ratios Hexogen explosives (RDX) on the ice damage characteristics were analyzed. The results show that during the process, the calculated simulation results are in good agreement with the test results, verifying the effectiveness of the calculation model and have revealed the ice damage mechanism under the combined action of underwater explosion shock wave and bubble load. RDX (0.36) have a strong damage effect on ice layer than RDX (0), RDX (0.16), RDX (0.63), which is close to the damage effect of TNT explosive on ice layer; according to the application characteristics of damage targets application situation, the shock wave load is the main damage element that causes the size of the ice damage area, and the bubble load mainly affects the crushing shape of the ice damage area; adjusting the explosive formula ratio, changing the shock wave energy and bubble energy achieves the purpose of efficient damage mode to structures.

导出引用

王莹，秦业志，王志凯，姚熊亮. 不同类型炸药水下爆炸时冰层损伤特性研究[J]. 振动与冲击, 2022, 41(9): 189-198

WANG Ying, QIN Yezhi, WANG Zhikai, YAO Xiongliang. Damage characteristics of ice layer during underwater blasting of different types of explosives[J]. Journal of Vibration and Shock, 2022, 41(9): 189-198

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