退役单基药的冲击起爆特性

姜夕博; 饶国宁; 徐森; 姚淼; 马安鹏; 彭金华

doi:10.11883/1001-1455(2014)01-0099-07

退役单基药的冲击起爆特性

doi: 10.11883/1001-1455(2014)01-0099-07

南京理工大学化工学院，江苏南京 210094

详细信息

作者简介:
姜夕博(1985—), 女, 博士研究生

通讯作者:
Rao Guo-ning, raoguoning@foxmail.com

中图分类号: O381
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出版历程
- 收稿日期: 2012-08-20
- 修回日期: 2012-12-05
- 刊出日期: 2014-01-25

Shock initiation characteristics of expired single-base propellants

School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, Jiangsu, China

摘要

摘要: 为了研究退役单基药的冲击起爆特性，参照GJB772A-97中卡片式隔板法实验方法，分别开展了退役单基药的连续爆速实验、冲击波感度实验及锰铜压力计实验，观测了其冲击起爆的爆轰建立过程，得到了临界隔板值以及临界起爆压力。在连续爆速实验中，隔板厚度为50 mm时，观察到了退役单基药反应冲击波不断增长的过程，并在90mm处转变为爆轰; 在冲击波感度以及锰铜压力计实验中，测得其临界隔板厚度为50~52 mm，临界起爆压力为1.35~1.49 GPa。对退役单基药的冲击起爆过程进行了数值模拟，结合三种实验的实验结果，标定了其点火增长模型反应速率方程参数。
- 爆炸力学 /
- 冲击起爆 /
- 连续爆速 /
- 退役单基药 /
- 冲击波感度 /
- 反应速率方程
Abstract: The continuous detonation velocity test, the shock wave sensitivity test and the critical initiation pressure testwere developed, respectively, with reference to the GJB772A-97 card gap test.Based on the above tests, the detonation establishment process in the expired single-base propellantwas investigated, and the critical gap thickness and the critical initiation pressure were obtained.In the continuous detonation velocity test, the building-up process of the reactive shock wave was observed at the PMMA gap thickness of 50 mm and itdeveloped into a normal detonation at the PMMA gap thickness of90mm.The critical gap thicknesswas 50-52 mm obtained from the shock wave sensitivity test.And the critical initiation pressure was1.35-1.49 GPa obtained from the critical initiation pressure test.According to the above tests, the numerical simulations were conducted to calibrate the parameters of the reactive rate equation in the ignition-and-growth model for the expired single-base propellant.
- mechanics of explosion /
- shock initiation /
- continuous detonation velocity /
- expired single-base propellant /
- shock wave sensitivity /
- reaction rate equation

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图 1 连续爆速实验装置示意图

Figure 1. Sketchmap of experimental device for continuous detonation velocity

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图 2 冲击波感度实验装置示意图

Figure 2. Sketchmap of experimental device for shock wave sensitivity

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图 3 临界起爆压力实验装置示意图

Figure 3. Sketchmap of experimental device for critical initiation pressure

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图 4 退役单基药的连续爆速曲线

Figure 4. Curves of continuous detonation velocity for expired single-base propellant

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图 5 见证板破裂情况

Figure 5. Rupture condition of witness board

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图 6 典型波形示意图

Figure 6. Typicalwaveform

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图 7 连续爆速曲线的实验和数值模拟结果

Figure 7. Experimental and calculated results of continuous detonation velocity

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图 8 退役单基药的压力曲线

Figure 8. Pressure curves of expired single-base propellant

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表 1 冲击波感度实验结果

Table 1. Experimental results of shock wave sensitivity

No.	h_PMMA/mm	见证板破裂情况	判断结果
1	48	穿孔直径约35 mm，穿孔的外环对称的两处被撕裂	发生正常爆轰
2	50	穿孔直径约32 mm，穿孔的外环对称的两处被撕裂	发生正常爆轰
3	52	未被撕裂，仍为完整钢板，但是呈现锅底状向下凹陷约30 mm	退役单基药反应成长即将向爆轰的转变过程
4	54	未被撕裂，仍为完整钢板，且没有发生任何变形，但是没有回收到退役单基药残药	只发生燃烧反应

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