Numerical simulation on explosion mechanism of split-tube charge holders

被引：0

作者：

Shen T. ^{[1
,2
]}

Luo N. ^{[1
,2
,3
]}

Xiang J. ^{[1
,2
]}

Gao X. ^{[4
]}

机构：

[1] State Key Laboratory for GeoMechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou, 221116, Jiangsu

[2] School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, 221116, Jiangsu

[3] Department of Modern Mechanics, University of Science and Technology of China, Hefei, 230027, Anhui

[4] Guizhou Public Security Bureau, Guiyang, 550001, Guizhou

来源：

Baozha Yu Chongji/Explosion and Shock Waves | 2018年 / 38卷 / 05期

关键词：

Blasting; Detonation gas; Directional control; High-speed schlieren; Split-tube charge holder;

D O I：

10.11883/bzycj-2017-0410

中图分类号：

学科分类号：

摘要：

To explore the directional-control blasting mechanism of a split-tube charge holder, a model was established by coupling explosive, a split-tube, and air. On the basis of the experimental results of the double split-tube charge holder by the high-speed schlieren system, the established model was used to carry out numerical simulations to investigate the interaction of shock waves, the spatial and temporal distribution of pressure in the explosion fields, and the morphological changes of the split-tube. The investigated results show that in the explosion processes of the split-tube charge holder, the split-tube can effectively control the energy release of explosive and the dynamic behavior of detonation gas; the pressure in the cutting direction appears earlier and it is higher than those in the non-cutting directions; under the joint action of the explosion shock waves and the detonation gas, the curvature of the split-tube decreases continuously and develops along the axial direction of the split-tube with the same deformation characteristics from the initiation detonation point; the numerical simulation results are in agreement with the experimental ones. © 2018, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.

引用

页码：1172 / 1180

页数：8

共 14 条

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