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.
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. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(9): 189-198.
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