Influence of explosive mass and heating rate on cook-off response characteristics of DNAN based casting explosive
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摘要: 为了研究不同药量和升温速率条件下DNAN基熔铸炸药的慢速烤燃特性，自行设计了烤燃实验装置，采用多点测温烤燃实验方法，分别在1和0.055℃/min两种升温速率下进行了不同状态装药量的烤燃实验，分析了熔铸混合炸药的热反应特征。结果表明，装药量和升温速率共同影响烤燃弹的响应特性。相同烤燃弹在0.055℃/min升温速率下比在1℃/min升温速率下加热响应会更剧烈；烤燃弹的放置姿态及端盖厚度会影响烤燃弹的响应剧烈程度。
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关键词:
- 装药量 /
- DNAN基熔铸混合炸药 /
- 烤燃 /
- 升温速率
Abstract: We studied the effect of the explosive mass and the heating rate on the slow cook-off characteristics of DNAN based casting explosive by designing a new roasting test device, and examined the thermal reaction characteristics of the mixed explosive by performing a multipoint temperature experiment at two heating rates, 1℃/min and 0.055℃/min, respectively. The results showed that the explosive mass and the heating rate jointly affected the response characteristics of the roasting bombs. The same roasting bombs at the heating rate of 0.055℃/min was more intense than that at the heating rate of 1℃/min. The placement posture and the thickness of the end cover also affected the intensity of the response of the roasting bombs.-
Key words:
- explosive mass /
- DNAN based casting explosive /
- cook-off /
- heating rate
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图 3 相变过程和自热反应过程的实验曲线
Figure 3. Experimental curves of phase transition and aotothermal reaction processes
表 1 不同装药量下的烤燃实验结果
Table 1. Results of roasting experiment with different explosive masses
实验 药柱尺寸 药柱质量
m/g端盖厚度
δ/mm放置方式 升温速率/Ṫ
/(℃·min-1)T1/℃ T2/℃ T3/℃ 响应等级 d/mm h/mm 1 19 38 19.0 1 横放 1 200.0 205.0 204.7 燃烧 2 19 38 19.0 1 竖放 1 198.0 203.2 200.0 燃烧 3 19 38 19.1 3 横放 1 201.1 207.2 203.8 燃烧 4 19 38 19.1 3 横放 0.055 194.5 200.0 199.0 燃烧 5 19 76 38.7 1 横放 1 199.5 204.9 201.0 燃烧 6 19 76 38.7 1 横放 0.055 190.0 196.0 195.0 爆炸 7 30 30 38.1 3 横放 0.055 187.5 197.0 194.0 爆轰 8 30 120 150.0 3 横放 0.055 184.2 193.0 191.5 爆轰 
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