Distribution of blast loading in cylindrical explosive containment vessels

被引：0

作者：

Xu J. ^{[1
,2
]}

Gu W. ^{[1
]}

Liu J. ^{[1
]}

Wang Z. ^{[3
]}

Lu M. ^{[1
]}

Xu B. ^{[4
]}

机构：

[1] Field Engineering College, Army Engineering University of PLA, Nanjing

[2] Unit 78102 of PLA, Chengdu

[3] Institute of Chemical Research, Academy of Military Sciences, Beijing

[4] Unit 96901 of PLA, Beijing

来源：

Zhendong yu Chongji/Journal of Vibration and Shock | 2020年 / 39卷 / 18期

关键词：

Cover shape; Cylindrical explosive containment vessel; Explosive pressure; Mach reflection; Numerical simulation;

D O I：

10.13465/j.cnki.jvs.2020.18.038

中图分类号：

学科分类号：

摘要：

In order to analyze the distribution of blast loading in cylindrical explosive containment vessels, LS-DYNA was used to simulate the internal explosion field. The influences of H/D(ratio of height to radius),a/b(ratio of short axis to long axis of end cap) and the configuration of end cap on the distribution of blast loading were discussed. The results show that the peak value and specific impulse of the shock wave calculated by the numerical simulation agree well with the experimental results. A 'secondary shock wave' and a 'second Mach reflection wave' appear on the wall surface of the cover, so that the pressure at the cover center point is larger than that at the cylinder center point. As H/D increases, the peak pressure and the specific impulse at the cover center point will become larger and larger, reaching the maximum when H/D=1.5. With the increase of a/b, the peak pressure and the specific impulse at the cover center point significantly increase. For the cylindrical explosive containment vessels with flat cover, with the increase of H/D, the pressure and the specific impulse at cover center point decrease, but the corner points will become a new danger point. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.

引用

页码：276 / 282

页数：6

共 19 条

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