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Sympathetic Detonation Test and Simulation of Laminated Composite Charge
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1.Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621999, China;2.Robust Munitions Center, China Academy of Engineering Physics, Mianyang 621999, China

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    Abstract:

    Laminated composite charge is composed of two or more different charges by way of superposition, in which the safety and power performance can be regulated through the design of charge structure. To study the sympathetic detonation safety of laminated composite charge, typical composite charges which contain both the high energy charge and insensitive charge were selected as research objects. The effect of different charges structure on critical sympathetic detonation distance was explored through numerical simulation and sympathetic detonation tests. Results showed that, compared to simple high energy charge, the sympathetic detonation of composite charge decreases 53.3%(from 7.5 mm decreases to 3.5 mm), while energy decreases 22.9%. The thickness of insensitive charge must reach a certain threshold(3 mm) in order to reduce the critical sympathetic detonation distance obviously. As the content of insensitive charge increases, the critical sympathetic detonation distance is closer to insensitive charge.

    表 2 PBXN-109反应速率方程参数[14-15]Table 2 Ignition and growth reactive models parameters for PBXN-109[14-15]
    表 4 PBX-1与PBX-2状态方程参数[17-19]Table 4 The EOS of JWL for PBX-1 and PBX-2[17-19]
    表 7 叠层复合装药殉爆试验结果Table 7 Results of sympathetic detonation tests for laminated composite charge
    表 5 PBX-1与PBX-2反应速率方程参数[17-19]Table 5 Ignition and growth reactive models parameters for PBX-1 and PBX-2[17-19]
    表 1 PBXN-109状态方程参数[14-15]Table 1 The EOS of JWL for PBXN-109[14-15]
    图1 殉爆试验布局示意图Fig.1 Sketch of sympathetic detonation test
    图2 爆轰波阵面在叠层复合装药中传播示意图Fig.2 Propagation of detonation wave in laminated composite charge
    图3 PBXN-109殉爆试验仿真模型图Fig.3 Simulation model of sympathetic detonation test for PBXN-109
    图4 叠层复合装药殉爆数值模型Fig.4 Simulation model of sympathetic detonation test for laminated composite charge
    图5 被发装药内部压力曲线(R=9 mm)Fig.5 Pressure of acceptor charge(R=9 mm)
    图6 被发装药内部压力曲线(R=10 mm)Fig.6 Pressure of acceptor charge(R=10 mm)
    图7 被发装药压力曲线(R=2 mm)Fig.7 Pressure of acceptor charge(R=2 mm)
    图8 被发装药压力曲线(R=3 mm)Fig.8 Pressure of acceptor charge(R=3 mm)
    图9 叠层复合装药能量与临界殉爆距离的关系Fig.9 Relationship between energy and critical sympathetic detonation distance for laminated composite charge
    图10 殉爆试验结果(R=7 mm)Fig.10 Results of sympathetic detonation test(R=7 mm)
    图11 殉爆试验结果(R=8 mm)Fig.11 Results of sympathetic detonation test(R=8 mm)
    图14 临界殉爆距离试验值与仿真值对比Fig.14 Comparison of critical sympathetic detonation distance between test values and simulated values
    表 3 PBXN-109殉爆试验结果Table 3 Results of sympathetic detonation test for PBXN-109
    表 6 不同结构叠层复合装药临界殉爆距离Table 6 Critical sympathetic detonation distances for laminated composite charge with different structures
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李兴隆,吴奎先,路中华,等.叠层复合装药殉爆安全性试验及数值模拟[J].含能材料,2022,30(3):204-213.
LI Xing-long, WU Kui-xian, LU Zhong-hua, et al. Sympathetic Detonation Test and Simulation of Laminated Composite Charge[J]. Chinese Journal of Energetic Materials,2022,30(3):204-213.

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History
  • Received:January 10,2021
  • Revised:May 05,2021
  • Adopted:August 31,2021
  • Online: March 17,2022
  • Published: March 25,2022