多组分PBX炸药细观结构冲击点火数值模拟

王晨; 陈朗; 刘群; 皮铮迪; 胡晓棉

doi:10.11883/1001-1455(2014)02-0167-07

多组分PBX炸药细观结构冲击点火数值模拟

doi: 10.11883/1001-1455(2014)02-0167-07

王晨^{1, 2},
陈朗^1, ,,
刘群¹,
皮铮迪¹,
胡晓棉²

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.
北京应用物理与计算数学研究所，北京100094

详细信息

作者简介:
王晨(1985—), 女, 博士

中图分类号: O381
计量
- 文章访问数: 3483
- HTML全文浏览量: 326
- PDF下载量: 607
- 被引次数: 15
出版历程
- 收稿日期: 2012-09-03
- 修回日期: 2012-11-02
- 刊出日期: 2014-03-25

Numerical simulation for analyzing shock to ignition of PBXs with different compositions in meso-structural level

Wang Chen^{1, 2},
Chen Lang^{1
, ,},
Liu Qun¹,
Pi Zheng-di¹,
Hu Xiao-mian²

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing100081, China
2.
Institute of Applied Physics and Computational Mathematics, Beijing100094, China

More Information

Corresponding author: Chen Lang, chenlang@bit.edu.cn

摘要

摘要: 建立了炸药颗粒自由堆积三维计算模型，考虑了炸药颗粒尺寸和位置的随机分布、粘结剂对炸药颗粒的包覆和不同组分炸药颗粒间的级配；采用非线性有限元方法，对炸药颗粒由自由堆积到密实装药的压药过程进行模拟，构建了PBX炸药细观结构模型；对多元PBX炸药（HMX+TATB+Estane）细观结构冲击点火过程进行了计算，考虑冲击作用下炸药内部热力耦合作用和自热反应，计算不同组分比例混合炸药的冲击点火性能，分析了炸药组分对冲击点火的影响。研究表明TATB含量增加，混合炸药冲击感度降低。
- 爆炸力学 /
- 细观结构模型 /
- 三维计算模型 /
- PBX炸药 /
- 冲击点火
Abstract: By considering the particle size, location in random distribution and the composite content, a three-dimensional computation model was developed for explosive particles in free deposition.The pressing process of the explosive particles from free deposition to molded explosives was numerically simulated by using the non-linear finite element method.Based on the above, the meso-structural models of PBXs(HMX+TATB+Estane)were established.Thereby, numerical simulations were conducted to analyze the shock-to-ignition processes of the PBXs with different compositions in the meso-structural level.In the above numerical simulations, the thermo-mechanical coupling effect and the self-sustained thermal reaction within the PBXs were taken into account.The influences of the composition contents on the shock-to-ignition performances of the PBXs were discussed.The simulated results show that the composite explosives containing HMX and TATB become less sensitive as the TATB content in them increases.
- mechanics of explosion /
- meso-structural model /
- three-dimensional calculation model /
- PBXs /
- shock to ignition

HTML全文

图 1 PBX炸药细观结构显微照片

Figure 1. Image of the PBX microstructure

下载: 全尺寸图片幻灯片

图 2 炸药颗粒自由随机堆积示意图

Figure 2. Pictorial of a packed ensemble of particles

下载: 全尺寸图片幻灯片

图 3 压制过程炸药在不同时刻的变形

Figure 3. Deformation of explosive particles at different times during compression

下载: 全尺寸图片幻灯片

图 4 计算得到压制成型后PBX炸药细观结构截面图

Figure 4. Calculated meso-structure of pressed PBXs

下载: 全尺寸图片幻灯片

图 5 炸药颗粒自由堆积模型

Figure 5. Packed ensemble of particles

下载: 全尺寸图片幻灯片

图 6 炸药细观结构1/2模型网络图

Figure 6. Mesh of the calculation model

下载: 全尺寸图片幻灯片

图 7 不同配比混合炸药细观结构模型

Figure 7. Calculated meso-structure for varying compositions

下载: 全尺寸图片幻灯片

图 8 飞片冲击加载PBX炸药物理模型

Figure 8. Calculation model of shock to ignition

下载: 全尺寸图片幻灯片

图 9 飞片冲击加载PBX炸药计算模型网络图

Figure 9. Mesh of the calculation model

下载: 全尺寸图片幻灯片

图 10 温度分布图

Figure 10. Distribution of temperature

下载: 全尺寸图片幻灯片

图 11 测点示意图

Figure 11. Schematic of gauging point

下载: 全尺寸图片幻灯片

图 12 炸药内部监测点温度时间变化曲线

Figure 12. Calculated temperature-time curves of selected elements

下载: 全尺寸图片幻灯片

图 13 不同配比炸药发生点火的位置

Figure 13. Temperature contous of varying composite content

下载: 全尺寸图片幻灯片

图 14 临界点火压力随HMX质量分数变化曲线

Figure 14. Critical pressure of ignition varied with mass fraction of HMX

下载: 全尺寸图片幻灯片

表 1 材料参数

Table 1. Material parameters

材料	ρ/(kg·m^-3)	G/GPa	σ_y/GPa	c/(m·s^-1)	s	γ₀
HMX	1 900	2.700	0.10	2 901	2.058	1.100
TATB	1 876	1.700	0.08	1 745	1.993	1.097
Estane	1 100	0.270	0.01	2 350	1.700	1.000
Steel	7 850	79.000	1.85	4 570	1.490	1.930

下载: 导出CSV

参考文献(8)

[1]	Mader C L, Kershner J D. The heterogeneous explosive reaction zone[C]//Proceedings of 9th International Symposium on Detonation. Portland, Oregon, USA, 1989.
[2]	Conley P A, Benson D J. Microstructural effects in shock initiation[C]//Proceedings of 11th International Symposium on Detonation. Snowmass, Colorado, 1998: 768-787.
[3]	Baer M R. Modeling heterogeneous energetic materials at the mesoscale[J]. Thermochimica Acta, 2002, 384: 351-367. doi: 10.1016/S0040-6031(01)00794-8
[4]	尚海林, 赵锋, 王文强, 等.冲击作用下炸药热点形成的3维离散元模拟[J].爆炸与冲击, 2010, 30(2): 131-140. http://www.bzycj.cn/article/id/8376 Shang Hai-lin, Zhao Feng, Wang Wen-qiang, et al. Three-dimensional discrete element simulation of hot spots in explosives under shock loading[J]. Explosion and Shock Waves, 2010, 30(2): 131-140. http://www.bzycj.cn/article/id/8376
[5]	Barua A, Zhou M. A Lagrangian framework for analyzing microstructural level response of polymer-bonded explosives[J]. Modelling and Simulation in Materials Science and Engineering, 2011, 19(5): 1-24. doi: 10.1088/0965-0393/19/5/055001/pdf
[6]	Lawrence Livermore National Laboratory. LS-DYNA user's manual[M]. California: Lawrence Livermore National Laboratory, University of California, 2001.
[7]	董海山, 周芬芬.高能炸药及相关物性能[M].北京: 科学出版社, 1989: 334-340.
[8]	Gibbs T R, Popolato A. LASL explosive property data[M]. California: University of California Press, 1980: 6-7, 156-157.

施引文献

期刊类型引用(7)

1.	夏全志，吴艳青，柴传国，杨昆，黄风雷. 冲击加载下PBX界面对热点形成和安全性影响. 兵工学报. 2024(06): 1840-1853 . 百度学术
2.	陈春燕，栗保华，李昆，高立龙，王晓峰，南海，宁栋. 冲击加载下PBX的点火特性与力学特性间的关系. 火炸药学报. 2018(04): 369-374 . 百度学术
3.	王芳，蒋建伟，门建兵. 钨铜射流成形的细观数值模拟分析. 兵工学报. 2018(02): 245-253 . 百度学术
4.	周涛，李亮亮，屈可朋，肖玮. RDX基含铝炸药的剪切试验及损伤模式. 火炸药学报. 2017(06): 78-82 . 百度学术
5.	吕鹏博，王伟力，刘晓夏，吴世勇. 含裂纹装药缺陷的侵爆战斗部穿甲过程装药安定性的数值模拟研究. 兵器装备工程学报. 2017(11): 26-30 . 百度学术
6.	唐红，周俊辉，吕珂臻，陈学平，豆育升. PBX压制过程中细观力学行为的二维数值模拟. 含能材料. 2016(07): 651-656 . 百度学术
7.	王洪波，王旗华，卢永刚，梁斌，冯晓伟. PBX炸药细观孔洞缺陷对其冲击点火特性的影响. 火炸药学报. 2015(05): 31-36 . 百度学术