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. 重庆红宇精密工业有限责任公司, 重庆 402760
*邮箱: zhangxr@bit.edu.cn
收稿:2021-02-07,
网络出版:2023-07-19,
纸质出版:2023-06-30
移动端阅览
周霖, 倪磊, 李东伟, 等. 炸药抗过载性能试验方法[J]. 兵工学报, 2023,44(6):1722-1732.
Lin ZHOU, Lei NI, Dongwei LI, et al. Test Method for Anti-overload Performance of Explosives[J]. Acta Armamentarii, 2023, 44(6): 1722-1732.
周霖, 倪磊, 李东伟, 等. 炸药抗过载性能试验方法[J]. 兵工学报, 2023,44(6):1722-1732. DOI: 10.12382/bgxb.2022.0074.
Lin ZHOU, Lei NI, Dongwei LI, et al. Test Method for Anti-overload Performance of Explosives[J]. Acta Armamentarii, 2023, 44(6): 1722-1732. DOI: 10.12382/bgxb.2022.0074.
炸药抗过载性能的测试与表征
是侵彻战斗部装药选型的重要依据。基于单自由度受迫振动模型
建立炸药抗过载性能试验测试装置
模拟战斗部侵彻过程中炸药装药所承受的力学环境和变形行为
提出过载条件下炸药的点火判据
<math id="Mml1"> <mo>∫</mo> <mover> <mrow> <mi>σ</mi></mrow> <mrow> <mo>·</mo></mrow></mover></math>
d
σ
(
σ
和
<math id="Mml2"> <mover> <mrow> <mi>σ</mi></mrow> <mrow> <mo>·</mo></mrow></mover></math>
分别为应力和应力率)
形成了炸药抗过载性能表征方法。采用该装置对3种典型的DNAN基不敏感侵彻熔注炸药的抗过载性能进行测试
得到它们的点火阈值分别为1.8GPa
2
/ms、2.2GPa
2
/ms和3.3GPa
2
/ms;采用平头弹侵彻试验方法
对上述3种炸药的抗过载性能进行验证
得到了3种炸药的着靶爆炸反应的临界速度范围分别为444~475m/s、512~531m/s和大于570m/s。研究结果表明
炸药抗过载性能测试和平头弹侵彻试验方法试验的验证结果一致
说明炸药抗过载性能试验方法可作为侵彻战斗部装药选型的科学有效手段。
The test and characterization of the anti-overload performance of the explosives are important basis for the selection of penetrating warhead charge. Based on the single-degree-of-freedom forced vibration model
a testing device for the anti-overload performance of explosives is set up
the mechanical environment and deformation characteristics of explosive charges in the process of warhead penetration are simulated. Then we propose a method for characterizing the anti-overload performance
which is the explosive charge ignition criterion
<math id="Mml3"> <mo>∫</mo> <mover> <mrow> <mi>σ</mi></mrow> <mrow> <mo>·</mo></mrow></mover></math>
d
σ
(
σ
and
<math id="Mml4"> <mover> <mrow> <mi>σ</mi></mrow> <mrow> <mo>·</mo></mrow></mover></math>
are stress and stress rate respectively)
and obtain a method for characterizing overload resistance of explosives. The device is used to test the anti-overload performance of three typical DNAN-based insensitive penetrating melt cast explosives
and obtain that their ignition thresholds are 1.8GPa
2/
ms
2.2GPa
2
/ms and 3.3GPa
2
/ms. Then
the flat-nosed projectile penetration test is employed to verify the anti-overload performance of the above three explosives. The results show that the anti-overload performance test and the flat-nosed projectile penetration test deliver consistent results
indicating that the test method and the device for the anti-overload performance of explosives are scientifically effective in selecting penetrating warhead charges.
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