基于圆筒实验的RDX/Al炸药反应进程

裴红波; 焦清介; 覃剑峰

doi:10.11883/1001-1455(2014)05-0636-05

基于圆筒实验的RDX/Al炸药反应进程

doi: 10.11883/1001-1455(2014)05-0636-05

北京理工大学爆炸科学与技术国家重点实验室，北京 100081

基金项目: 国家自然科学基金项目（11172042）

详细信息

作者简介:
裴红波(1987—), 男, 博士研究生

中图分类号: O383
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出版历程
- 收稿日期: 2013-03-27
- 修回日期: 2013-05-22
- 刊出日期: 2014-09-25

Reaction process of aluminized RDX-based explosives based on cylinder test

State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

摘要

摘要: 对RDX炸药和2种铝粉质量分数分别为15%、30%的RDX基含铝炸药进行∅50mm圆筒实验，研究铝粉含量对炸药做功能力的影响，根据格尼公式分析铝粉与爆轰产物的反应进程。结果表明：在圆筒实验记录的时间范围内，铝粉质量分数为15%的含铝炸药做功能力最强，RDX炸药次之，铝粉质量分数为30%炸药做功能力最弱；34μs时刻，铝粉质量分数为15%的炸药，铝粉的反应度为0.49，而铝粉质量分数为30%炸药铝粉的反应度仅为0.21，含铝炸药中铝粉的反应时间在50~200μs之间。
- 爆炸力学 /
- 反应进程 /
- 圆筒实验 /
- 含铝炸药 /
- 反应时间 /
- RDX
Abstract: The copper cylinder tests were carried out to explore the effects of the aluminum contents on the performances of aluminized RDX-based explosives.In the tests, the outer diameter of the copper cylinder was 50 mm and the mass fractions of aluminum in the three RDX-based explosives were 0, 15% and 30%, respectively.In the three explosives tested, the acceleration ability of the explosive with the aluminum mass fraction of 15% was highest.However, the acceleration ability of the explosive with the aluminum mass fraction of 30% was lower than that of the pure RDX.The Gurney formula was used to analyze the reaction process of aluminum with detonation products in the aluminized RDX-based explosives.About 49% aluminum by mass had reacted in the explosive with the aluminum mass fraction of 15% at 34 μs, while in the explosive with the aluminum mass fraction of 30%, only about 21% aluminum by mass had reacted.And the reaction time of aluminum powder with the size of 10 μm was 50-200 μs.
- mechanics of explosion /
- reaction process /
- cylinder test /
- aluminized explosive /
- reaction time /
- RDX

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图 1 圆筒实验装置示意图

Figure 1. Schematic diagram of the cylinder tests

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图 2 圆筒膨胀过程

Figure 2. Cylinder expansion process

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图 3 不同膨胀距离处圆筒壁速

Figure 3. Wall velocities at different expansion distances

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图 4 圆筒壁速度时程曲线

Figure 4. Histories of wall velocity

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图 5 不同膨胀距离处筒壁比动能关系

Figure 5. Wall specific kinetic energies vs expansion distances

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图 6 圆筒壁加速度时程曲线

Figure 6. Histories of wall acceleration

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图 7 含铝炸药中铝粉反应度

Figure 7. Reaction degree of aluminum in explosive

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表 1 炸药配方

Table 1. Explosive formulations

炸药	w(RDX)	w(Al)	ρ/(g·cm^-3)	w(Al)/w(O)	v/(m·s^-1)
RA0	100	0	1.673	0	8 325
RA15	80	15	1.763	0.257	8 121
RA30	70	30	1.865	0.632	7 879

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表 2 圆筒实验拟合系数

Table 2. Fitting coefficients of cylinder test

炸药	a	b	c	d	v/(m·s^-1)
RA0	3.960	0.593 1	-3.613	-0.109 00	8 325
RA15	5.511	0.571 0	-4.601	-0.073 64	8 121
RA30	5.740	0.616 9	-4.644	-0.080 71	7 879

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表 3 含铝炸药的爆热

Table 3. Heat of aluminum explosive

炸药	ρ_T/(g·cm^-3)	ρ₀/(g·cm^-3)	Q/(MJ·kg^-1)	Q_e/(MJ·kg^-1)	Q(Al)/(MJ·kg^-1)
RA0	1.737	1.677	5.637	5.637	-
RA15	1.817	1.775	6.489	4.801	1.688
RA30	1.906	1.861	7.324	3.950	3.374

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参考文献(10)

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