Analysis of the Heat Transfer Characteristics of DNAN-based Melt-cast Explosive in Slow Cook-off Test

被引：0

作者：

Zhou J. ^{[1
]}

Zhi X. ^{[1
]}

Liu Z. ^{[1
]}

Wang X. ^{[1
]}

Wang S. ^{[1
]}

机构：

[1] College of Electromechanic Engineering, North University of China, Taiyuan, 030051, Shanxi

来源：

Binggong Xuebao/Acta Armamentarii | 2019年 / 40卷 / 06期

关键词：

2; 4-dinitroanisole; Cook-off; Heat transfer characteristic; Melt-cast explosive; Natural convection; Phase transition;

D O I：

10.3969/j.issn.1000-1093.2019.06.005

中图分类号：

学科分类号：

摘要：

3 experimental devices were designed to investigate the internal heat transfer characteristics of 2, 4-dinitroanisole(DNAN)-based melt-cast explosive in slow cook-off test, and tested by scaled thermal explosion experiment. The temperature curves of internal monitoring points in the explosive under a thermal stimulus with the rate of 1 K/min were obtained. It is found that the phase-transition temperature is 73℃, the ignition temperature is 205℃, and the incomplete combustion reaction occurs after ignition. The ignition location is estimated to be on the upper half of bomb body. The changing process of internal temperature of DNAN-based melt-cast explosive is described. The internal temperature field was analyzed by numerical simulation, and the whole process of phase transition was observed. The results show that the internal temperature field of explosive in solid phase is elliptical, and its internal temperature field in liquid phase is layered. A natural convection arises inside the explosive after phase transition, which is a major factor to affect the ignition location distribution of the explosive. © 2019, Editorial Board of Acta Armamentarii. All right reserved.

引用

页码：1154 / 1160

页数：6

共 16 条

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