RDX炸药爆轰产物物态方程

赵艳红; 段素青; 刘海风; 张弓木

doi:10.11858/gywlxb.2015.01.008

RDX炸药爆轰产物物态方程

doi: 10.11858/gywlxb.2015.01.008

北京应用物理与计算数学研究所，北京 100094

基金项目: 国家自然科学基金(11102026，10804011)；国家自然科学基金委员会-中国工程物理研究院NSAF联合基金(11176002)

详细信息

作者简介:
赵艳红(1977—)，女，硕士，副研究员，主要从事材料物态方程的理论研究.E-mail:zhao_yanhong@iapcm.ac.cn

中图分类号: O521.2; O381
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出版历程
- 收稿日期: 2014-03-13
- 修回日期: 2014-05-23

Equation of State of Detonation Products for RDX Explosive

Institute of Applied Physics and Computational Mathematics, Beijing 100094, China

摘要

摘要: 采用基于统计物理的爆轰产物物态方程模型, 研究了不同初始密度下RDX炸药爆轰产物性质，发现炸药初始密度小于1.20 g/cm³时，炸药爆轰后只有气相产物生成，随着炸药初始密度进一步增大，爆轰后有固相碳析出。炸药初始密度小于1.60 g/cm³时，各气相产物按均匀混合处理，计算的爆速、爆压和实验值符合较好。随着炸药初始密度进一步增大，计算的爆速、爆压与实验值出现较大的偏差，经分析发现此处可能出现了超临界流体相分离现象，在物态方程模型中考虑了这种效应后，得到较好的结果。
- 爆轰产物 /
- 物态方程 /
- 超临界流体相分离
Abstract: The equation of state of detonation products for RDX explosive at different initial densities is calculated by adopting the program based on the statistical physics model.It is found that only gas phase product generates after the explosive detonation when the initial density of explosive is less than 1.20 g/cm³.With the increasing of initial density of explosive, solid carbon dissolves out after the explosive detonation.When the initial density of explosive is less than 1.60 g/cm³, the calculated detonation velocity and detonation pressure is in good consistent with the experimental value regarding the gas phase product as uniform mixing.With the increasing of initial density of explosive, the calculated detonation velocity and detonation pressure deviate largely from the experimental value.After detailed analysis, we find out that there is a supercritical fluid phase separation in this condition.Considering this effect in our program, a good result is obtained.
- detonation products /
- equation of state /
- supercritical fluid phase separation

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图 1 不同初始密度下RDX炸药CJ点的爆速

Figure 1. Detonation velocity of RDX explosive of different initial densities at CJ point

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图 2 不同初始密度下RDX炸药CJ点的主要组分

Figure 2. Products of RDX explosive of different initial densities at CJ point

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图 3 不同初始密度下RDX炸药CJ点的爆压

Figure 3. Detonation pressure of RDX explosive of different initial densities at CJ point

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表 1 不同初始密度下RDX炸药CJ点的爆速、爆压的比较

Table 1. Detonation velocity and detonation pressure of RDX explosive of different initial density at CJ point

Initial density /(g/cm³)	D_CJ/(km/s)			p_CJ(GPa)
Initial density /(g/cm³)	Experiment	Idealmix	Nonidealmix	Experiment	This work
0.53	4.06	4.10		-	2.90
0.56	4.05	4.21		3.16	3.19
0.61	4.39	4.40		-	3.73
0.70	4.78	4.75		4.72	4.86
0.90	5.61	5.58		-	8.06
0.95	5.80	5.79		9.46	9.02
1.00	6.04	6.00		-	10.03
1.05	6.19	6.21		-	11.11
1.07	6.26	6.30		11.6	11.56
1.10	6.18	6.42		12.0	12.25
1.20	6.75	6.85		15.2	14.71
1.29	7.00	7.13		16.4	17.14
1.40	7.44	7.46		21.3	20.37
1.46	7.60	7.66		20.8	22.26
1.50	7.69	7.82	7.81	-	23.60
1.59	8.10	8.19	8.14	28.7	28.66
1.60	8.13	8.25	8.18	26.0	27.01
1.72	8.46	8.65	8.48	30.8	31.46
1.77	8.64	8.89	8.70	33.8	32.82

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参考文献(16)

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