Damage Characteristics of Fixed Rectangular Steel Plate under Close-in Explosion

被引：0
|
作者：
Han L. [1 ]
Yuan J.-F. [1 ]
Zhang Y.-L. [1 ]
Xu Q.-P. [1 ]
Li Z.-R. [1 ]
机构：
[1] Xi'an Modern Chemistry Research Institute, Xi'an
来源：
Huozhayao Xuebao/Chinese Journal of Explosives and Propellants | 2021年 / 44卷 / 02期
关键词：
Close-in explosion; Damage characteristics; Explosion mechanics; Rectangular steel plate; Shock wave;
D O I：
10.14077/j.issn.1007-7812.202004023
中图分类号：
学科分类号：
摘要：
To obtain damage characteristics of metal plate structure under close-in explosion, the close-in explosion test of cylindrical TNT charges on rectangular steel plate with four fixed sides were carried out, and the results show three damage modes: plastic large deformation damage, critical initiation damage and petal shaped damage. The effects of charge mass, distance and thickness of steel plate on its damage characteristics under close-in explosion were analyzed by theoretical and simulation models under different damage modes. The results show that the maximum plastic deformation of plate increases with the increase of charge mass and decreases with the increase of detonation distance. The critical crack of plate is I-shape and parallel to the long side of the rectangle. When the detonation distance remains constant, the maximum fracture diameter of the steel plate is positively related to the charge mass, and the maximum fracture diameter of 2000g charge is 1.18 times that of 1000g charge. When the charge mass is constant, the maximum fracture diameter of the steel plate first increases and then decreases with the increase of detonation distance. The optimal damage explosion distance is 4cm and 5cm for the explosive mass of 500g and 1000g, respectively. © 2021, Editorial Board of Journal of Explosives & Propellants. All right reserved.
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页码：225 / 232
页数：7
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