孔隙度对PBX炸药冲击起爆影响的实验研究

刘海庆; 段卓平; 白志玲; 温丽晶; 欧卓成; 黄风雷

doi:10.11883/bzycj-2018-0226

孔隙度对PBX炸药冲击起爆影响的实验研究

doi: 10.11883/bzycj-2018-0226

刘海庆^1,,
段卓平^1, ,,
白志玲¹,
温丽晶^{1, 2},
欧卓成¹,
黄风雷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.
环境保护部核与辐射安全中心，北京 100082

基金项目: 国家自然科学基金(U1630113)；材料与结构冲击动力学创新小组(11521062)

详细信息

作者简介:
刘海庆（1987－　），男，博士研究生，liuhaiqing0705@163.com

通讯作者:
段卓平（1965－　），男，博士，研究员，博士生导师，duanzp@bit.edu.cn

中图分类号: O381
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出版历程
- 收稿日期: 2018-06-25
- 修回日期: 2018-08-15
- 刊出日期: 2019-07-01

Experimental research on effects of porosity on shock initiation of PBX explosive

1.
State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
2.
Nuclear and Radiation Safety Center, Ministry of Environmental Protection, Beijing 100082, China

摘要

摘要: 为了研究孔隙度(装药密度)对PBX炸药冲击起爆爆轰成长的影响，采用炸药冲击起爆锰铜压阻一维拉格朗日实验测试系统，测量了不同孔隙度的PBXC03炸药(HMX的质量分数为87%，TATB的质量分数为7%，黏结剂的质量分数为6%)冲击起爆过程不同拉格朗日位置的压力-时间历史。结果显示：在本文装药范围和加载条件下，孔隙度对PBX炸药冲击起爆爆轰过程的影响不单调，中等密度的炸药冲击起爆和爆轰成长最快，这是热点点火过程与燃烧反应过程共同作用的结果。
- 冲击起爆 /
- PBX炸药 /
- 拉格朗日实验分析测试系统 /
- 孔隙度
Abstract: To investigate the influence of the porosity (charge density) on the shock initiation and detonation of polymer bonded explosives (PBXes), a one-dimensional Lagrangian experimental testing system is adopted to measure the pressure-time histories at different Lagrangian locations of PBXC03 (87% HMX, 7% TATB, 6% binder by weight) with three different porosities (or charge densities), in which, an explosive plane-wave lens is used to generate a high-pressure planar detonation wave loading, and the Manganin piezoresistive pressure gauge measurement technique and the attenuation technique by both air-gap and Al-gap are used. The experimental results show that the detonation grows the fastest in the explosive with a moderate porosity. This work provides more detailed experimental data for the further development of mesoscopic reaction rate models for shock initiation of heterogeneous explosives.
- shock initiation /
- PBX explosives /
- Lagrangian experiment testing system /
- porosity

HTML全文

图 1 炸药冲击起爆锰铜压阻一维拉格朗日实验测试系统^[11-13]

Figure 1. One-dimensional Lagrangian system with manganin piezoresistive pressure gauges for testing explosive shock initiation^[11-13]

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图 2 PBXC03炸药样品

Figure 2. PBXC03 samples

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图 3 封装的锰铜压阻传感器

Figure 3. Packaged manganin piezoresistive pressure gauges

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图 4 示波器记录的典型实验信号

Figure 4. Typical voltage signals recorded by an oscilloscope

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图 5 不同孔隙度的PBXC03炸药冲击起爆过程的实验测试结果

Figure 5. Experimental pressure-time curves of the shock initiation processes of the PBXC03 with different porosities.

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图 6 同一加载压力下不同实验中PBXC03炸药0 mm位置的压力-时间曲线对比

Figure 6. Pressure-time curves at 0 mm of the PBXC03 with different porosities in different experiments under the same loading pressure

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图 7 不同孔隙度的PBXC03炸药前导冲击波阵面压力成长历史和前导冲击波迹线。

Figure 7. Pressure growth histories on the shock wave front and precursory shock wave trajectories in the PBXC03 with different porosities

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参考文献(15)

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