RDX基PBX的做功能力及JWL状态方程参数确定

王新颖; 王树山; 徐豫新; 胡赛

doi:10.11883/1001-1455(2016)02-0242-06

RDX基PBX的做功能力及JWL状态方程参数确定

doi: 10.11883/1001-1455(2016)02-0242-06

王新颖^{1, 2,},
王树山¹,
徐豫新¹,
胡赛¹

1.
北京理工大学爆炸科学与技术国家重点实验室，北京 100081
2.
沈阳理工大学装备工程学院, 辽宁沈阳 110159

详细信息

作者简介:
王新颖(1980—)，女，博士研究生，讲师，wxy801003@163.com

中图分类号: O381
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出版历程
- 收稿日期: 2014-11-18
- 修回日期: 2015-03-10
- 刊出日期: 2016-03-25

Power capability and parameters of JWL equation of state for RDX-based PBX

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
School of Equipment Engineering, Shenyang LigongUniversity, Shenyang 110159, Liaoning, China

摘要

摘要: 为研究RDX基PBX炸药的做功能力并确定其爆轰产物的JWL状态方程参数，对RDX基PBX炸药和TNT炸药进行∅50 mm标准圆筒实验，获得了圆筒膨胀位移和速度的时程曲线，对比得出RDX基PBX炸药的做功能力明显高于TNT炸药；基于能量守恒对实验数据进行非线性拟合，得到2种炸药爆轰产物的JWL状态方程参数。TNT炸药的拟合参数和通过AUTODYN软件计算得到的结果符合较好；将采用上述方法得到的RDX基PBX炸药爆轰产物JWL状态方程参数用于数值模拟，计算结果与实验值吻合较好，符合数值模拟标定JWL状态方程参数的要求。
- 爆炸力学 /
- 做功能力 /
- 圆筒实验 /
- RDX基PBX /
- JWL状态方程
Abstract: In order to study the power capability of RDX-based PBX and determine the parameters of the JWL equation of state, the ∅50 mm standard cylinder test of RDX-based PBX and TNT were carried out, the expansion distance-time curve and velocity-time curve of the cylinder wall were obtained. Compared with the TNT, PBX had obviously a higher power capability. Based on the theory of energy conservation and the nonlinear fitting of the experimental data, the parameters of the JWL equation of state were obtained. Compared with the known software parameters and by numerical simulation of the cylinder test by AUTODYN, a fairly good agreement was reached between the experimental value and the actual test results, proving that this method for obtaining the JWL parameters is viable.
- mechanics of explosion /
- power capability /
- cylinder test /
- RDX-based PBX /
- JWL equation of state

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图 1 圆筒实验装置图

Figure 1. Equipment diagram of the cylinder test

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图 2 圆筒壁膨胀过程原始扫描底片

Figure 2. Scanning films showing expansion process of cylindrical wall

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图 3 不同炸药驱动下圆筒壁膨胀距离时程曲线

Figure 3. Radial expansion displacement of cylindrical wall generated by different explosives

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图 4 不同炸药驱动下圆筒壁膨胀速度时程曲线

Figure 4. Radial expansion velocity of cylindrical wall generated by different explosives

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图 5 不同炸药驱动下圆筒壁u-V曲线和E_k(V)-V曲线

Figure 5. u-V and E_k(V)-V curves of cylindrical wall generated by different explosives

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图 6 数值模拟的几何模型

Figure 6. Geometry model of simulation

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图 7 RDX基PBX炸药圆筒实验的数值模拟与实验结果比较

Figure 7. Cylinder test results of RDX-based PBX explosive compared with numerical simulation

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表 1 圆筒壁膨胀位移曲线拟合系数

Table 1. Fitting parameters for radial expansion displacement curve of cylindrical wall

炸药	v_s/(mm·μs^-1)	τ_s/μs	v_g/(mm·μs^-1)	τ₁/μs	τ₂/μs
TNT	0.684 66	0.370 31	0.102 67	1.350 37	7.772 72
RDX-based PBX	0.868 95	0.186 85	0.118 26	0.839 37	7.610 43

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表 2 破片初速及炸药格尼系数

Table 2. Initial velocity of fragment and Gurney coefficient of explosive

炸药	v₀/(m·s^-1)	$\sqrt{2 E} $/(m·s^-1)
TNT	1 311	2 270.7
RDX-based PBX	1 630	2 749.2

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表 3 爆轰产物的JWL状态方程参数

Table 3. Parameters in JWL state equation of detonation product

炸药	A/GPa	B/GPa	C/GPa	R₁	R₂	ω
RDX-based PBX	522.8	8.500	1.065	4.20	1.00	0.36
TNT(Origin)	363.5	3.600	0.988	4.10	0.99	0.26
TNT(AUTODYN)	371.2	3.231	1.045	4.15	0.95	0.30

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