Calculation of pressure parameters at ignition moment of HMX-based aluminized pressed explosives during slow cook-off

GUO Lu; ZHI Xiaoqi; QU Kepeng; LIU Xinghe; JIA Jie; LI Jin

doi:10.11883/bzycj-2023-0353

Volume 44 Issue 6

Jun. 2024

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GUO Lu, ZHI Xiaoqi, QU Kepeng, LIU Xinghe, JIA Jie, LI Jin. Calculation of pressure parameters at ignition moment of HMX-based aluminized pressed explosives during slow cook-off[J]. Explosion And Shock Waves, 2024, 44(6): 062303. doi: 10.11883/bzycj-2023-0353

Citation:

GUO Lu, ZHI Xiaoqi, QU Kepeng, LIU Xinghe, JIA Jie, LI Jin. Calculation of pressure parameters at ignition moment of HMX-based aluminized pressed explosives during slow cook-off[J]. Explosion And Shock Waves, 2024, 44(6): 062303. doi: 10.11883/bzycj-2023-0353

Citation:

GUO Lu, ZHI Xiaoqi, QU Kepeng, LIU Xinghe, JIA Jie, LI Jin. Calculation of pressure parameters at ignition moment of HMX-based aluminized pressed explosives during slow cook-off[J]. Explosion And Shock Waves, 2024, 44(6): 062303. doi: 10.11883/bzycj-2023-0353

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Calculation of pressure parameters at ignition moment of HMX-based aluminized pressed explosives during slow cook-off

doi: 10.11883/bzycj-2023-0353

GUO Lu^1
,,
ZHI Xiaoqi^{1
,
,},
QU Kepeng²,
LIU Xinghe¹,
JIA Jie¹,
LI Jin¹

1.
School of Electromechanical Engineering, North University of China, Taiyuan 030051, Shanxi, China
2.
Xi’an Modern Chemistry Research Institute, Xi’an 710065, Shaanxi, China

Received Date: 2023-09-28
Rev Recd Date: 2024-03-26

Available Online: 2024-03-29

Publish Date: 2024-06-18

Abstract

Abstract

In order to study the pressure parameters of HMX-based aluminized pressed explosives at the ignition moment during slow cook-off, slow cook-off tests were designed at 0.1 and 1.0 ℃/min heating rates, and internal multi-point temperature measurements were taken inside explosives. On this foundation, based on the universal cook-off model of explosives, combining the multi-step decomposition reaction mechanism of HMX-based explosives with the reaction of aluminum powder, and considering the phase transition process in the decomposition of HMX-based explosives, a slow cook-off calculation model for pressure-department reaction rate of HMX-based aluminized pressed explosives is proposed. The calculation model is then written as a user defined function and imported into Ansys Fluent to perform calculations. Slow cook-off tests were conducted on large aspect ratio (5∶1) HMX-based aluminized pressed explosive charges with 4 mm shell thickness at heating rates of 0.1 and 1.0 ℃/min and compared with simulation results. And then the numerical simulations of the temperature field and internal pressure changes are performed before ignition of the cook-off bomb at heating rates of 0.055, 0.1, 0.2, 0.3, 0.5, and 1.0 ℃/min. It is found that at the heating rate of 0.1 ℃/min, after the test reaction, the end cover is ejected, the shell is axially cracked, and there is no powder left, so it is judged to be a deflagration reaction; while at the heating rate of 1.0 ℃/min, the shell is slightly deformed, with some powder left, indicating that a combustion reaction has occurred. The numerical calculations show that as the heat stimulus increases, the ignition temperature of the explosive tends to increase logarithmically, while the extent of reaction and internal pressure of the cook-off bomb tend to decrease exponentially. Before the HMX phase transition, the internal pressure inside the cook-off bomb grows slowly, after the HMX phase transition the pressure grow rapidly increases, and finally it rises sharply near the ignition moment.
- slow cook-off,
- HMX-based aluminized pressed explosives,
- universal cook-off model,
- heating rate,
- pressure,
- cook-off bomb

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References(23)

References

[1]	曾稼, 智小琦, 于永利, 等. 热刺激强度对DNAN基熔铸炸药烤燃响应特性的影响 [J]. 火炸药学报, 2018, 41(2): 131–136. DOI: 10.14077/j.issn.1007-7812.2018.02.005. ZENG J, ZHI X Q, YU Y L, et al. Effect of thermal stimulation intensity on cook-off response characteristics of DNAN based casting explosives [J]. Chinese Journal of Explosives and Propellants, 2018, 41(2): 131–136. DOI: 10.14077/j.issn.1007-7812.2018.02.005.
[2]	李凌峰, 韩秀凤, 沈飞, 等. 典型约束环境下HMX基温压炸药内爆释能特性 [J]. 火工品, 2022(2): 48–53. DOI: 10.3969/j.issn.1003-1480.2022.02.011. LI L F, HAN X F, SHEN F, et al. Internal explosion energy release characteristics of HMX-based thermos-baric explosive in typical confined environment [J]. Initiators and Pyrotechnics, 2022(2): 48–53. DOI: 10.3969/j.issn.1003-1480.2022.02.011.
[3]	智小琦, 胡双启, 李娟娟, 等. 不同约束条件下钝化RDX的烤燃响应特性 [J]. 火炸药学报, 2009, 32(3): 22–24, 34. DOI: 10.3969/j.issn.1007-7812.2009.03.007. ZHI X Q, HU S Q, LI J J, et al. Cook-off response characteristics of desensitizing RDX explosive under different restriction conditions [J]. Chinese Journal of Explosives and Propellants, 2009, 32(3): 22–24, 34. DOI: 10.3969/j.issn.1007-7812.2009.03.007.
[4]	董泽霖, 屈可朋, 胡雪垚, 等. 约束方式和强度对HMX基压装含铝炸药慢烤响应特性的影响 [J]. 火炸药学报, 2023, 46(10): 897–904. DOI: 10.14077/j.issn.1007-7812.202212010. DONG Z L, QU K P, HU X Y, et al. Effect of restraint mode and strength on slow cook-off response characteristics of HMX-based pressed aluminized explosives [J]. Chinese Journal of Explosives and Propellants., 2023, 46(10): 897–904. DOI: 10.14077/j.issn.1007-7812.202212010.
[5]	沈飞, 王胜强, 王辉. 不同约束条件下HMX基含铝炸药的慢烤响应特性 [J]. 火炸药学报, 2019, 42(4): 385–390. DOI: 10.14077/7812.2019.04.012. SHEN F, WANG S Q, WANG H. Slow cook-off response characteristics of HMX-based aluminized explosives under different constraint conditions [J]. Chinese Journal of Explosives and Propellants, 2019, 42(4): 385–390. DOI: 10.14077/7812.2019.04.012.
[6]	智小琦, 胡双启. 炸药装药密度对慢速烤燃响应特性的影响 [J]. 爆炸与冲击, 2013, 33(2): 221–224. DOI: 10.11883/1001-1455(2013)02-0221-04. ZHI X Q, HU S Q. Influences of charge densities on responses of explosives to slow cook-off [J]. Explosion and Shock Waves, 2013, 33(2): 221–224. DOI: 10.11883/1001-1455(2013)02-0221-04.
[7]	赵亮. 尺寸效应对炸药烤燃响应特性影响的研究[D]. 太原: 中北大学, 2018. ZHAO L. Research on the effect of size effect on the flaming characteristics of explosives [D]. Taiyuan: North University of China, 2018.
[8]	刘子德, 智小琦, 王帅, 等. 几何尺寸对DNAN基熔铸炸药慢烤响应特性的影响 [J]. 火炸药学报, 2019, 42(1): 63–68. DOI: 10.14077/j.issn.1007-7812.2019.01.010. LIU Z D, ZHI X Q, WANG S, et al. Effect of geometric dimensions on slow cook-off response characteristics of DNAN-based melt-casting explosive [J]. Chinese Journal of Explosives and Propellants, 2019, 42(1): 63–68. DOI: 10.14077/j.issn.1007-7812.2019.01.010.
[9]	马欣, 陈朗, 鲁峰, 等. 烤燃条件下HMX/TATB基混合炸药多步热分解反应计算 [J]. 爆炸与冲击, 2014, 34(1): 67–74. DOI: 10.11883/1001-1455(2014)01-0067-08. MA X, CHEN L, LU F, et al. Calculation on multi-step thermal decomposition of HMX- and TATB-based composite explosives under cook-off conditions [J]. Explosion and Shock Waves, 2014, 34(1): 67–74. DOI: 10.11883/1001-1455(2014)01-0067-08.
[10]	DICKSON P M, ASAY B W, HENSON B F, et al. Measurement of phase change and thermal decomposition kinetics during cookoff of PBX9501 [J]. AIP Conference Proceedings, 2000, 505(1): 837–840.
[11]	PERRY W L , GUNDERSON J A , DICKSON P M . Application of a four-step HMX kinetic model to an impact-induced fraction ignition problems[C]//14th International Detonation Symposium. Coeur d'Alene, Idaho, United States, 2010.
[12]	HOBBS M L, KANESHIGE M J, ERIKSON W W. A universal cookoff model for explosives[C]//50th International Annual Conference of the Fraunhofer ICT. Karlsruhe, Germany, 2019.
[13]	范士锋, 董平, 李鑫, 等. 国外海军弹药安全性研究进展 [J]. 火炸药学报, 2017, 40(2): 101–106. DOI: 10.14077/j.issn.1007-7812.2017.02.019. FAN S F, DONG P, LI X, et al. Research progress in the safety of foreign naval ammunition [J]. Chinese Journal of Explosives and Propellants, 2017, 40(2): 101–106. DOI: 10.14077/j.issn.1007-7812.2017.02.019.
[14]	董泽霖, 屈可朋, 胡雪垚, 等. 升温速率对HMX基大长径比压装装药烤燃特性的影响研究 [J]. 火工品, 2023(4): 56–60. DOI: 10.3969/j.issn.1003-1480.2023.04.011. DONG Z L, QU K P, HU X Y, et al. Study on the effect of heating rate on the cook-off characteristics of HMX-based pressure charge with large aspect ratio [J]. Initiators and Pyrotechnics, 2023(4): 56–60. DOI: 10.3969/j.issn.1003-1480.2023.04.011.
[15]	封雪松, 冯晓军, 赵娟, 等. 铝粉含量和粒度对HMX基炸药空爆性能的影响 [J]. 爆破器材, 2018, 47(4): 10–15. DOI: 10.3969/j.issn.1001-8352.2018.04.002. FENG X S, FENG X J, ZHAO J, et al. Effect of content and particle size of aluminum powder on the air blast property of HMX-based explosive [J]. Explosive Materials, 2018, 47(4): 10–15. DOI: 10.3969/j.issn.1001-8352.2018.04.002.
[16]	HOBBS M L, KANESHIGE M J. Ignition experiments and models of a plastic bonded explosive (PBX 9502) [J]. The Journal of Chemical Physics, 2014, 140(12): 124203. DOI: 10.1063/1.4869351.
[17]	HENSON B F, SMILOWITZ L, ASAY B W, et al. The β-δ phase transition in the energetic nitramine octahydro-1, 3, 5, 7-tetranitro-1, 3, 5, 7-tetrazocine: thermodynamics [J]. The Journal of Chemical Physics, 2002, 117(8): 3780–3788. DOI: 10.1063/1.1495398.
[18]	周建兴, 刘瑞祥, 陈立亮, 等. 凝固过程数值模拟中的潜热处理方法 [J]. 铸造, 2001, 50(7): 404–407. DOI: 10.3321/j.issn:1001-4977.2001.07.010. ZHOU J X, LIU R X, CHEN L L, et al. The approaches of latent heat treatment [J]. Foundry, 2001, 50(7): 404–407. DOI: 10.3321/j.issn:1001-4977.2001.07.010.
[19]	HOBBS M L, KANESHIGE M J, ERIKSON W W. Modeling the measured effect of a nitroplasticizer (BDNPA/F) on cookoff of a plastic bonded explosive (PBX 9501) [J]. Combustion and Flame, 2016, 173: 132–150. DOI: 10.1016/j.combustflame.2016.08.014.
[20]	TARVER C M, TRAN T D. Thermal decomposition models for HMX-based plastic bonded explosives [J]. Combustion and Flame, 2004, 137(1/2): 50–62. DOI: 10.1016/j.combustflame.2004.01.002.
[21]	BAO Q, FANG Q, ZHANG Y D, et al. Effects of gas concentration and venting pressure on overpressure transients during vented explosion of methane-air mixtures [J]. Fuel, 2016, 175: 40–48. DOI: 10.1016/j.fuel.2016.01.084.
[22]	韦世豪, 杜扬, 王世茂, 等. 不同形状受限空间内油气爆燃特性的实验研究 [J]. 中国安全生产科学技术, 2017, 13(5): 41–47. DOI: 10.11731/j.issn.1673-193x.2017.05.007. WEI S H, DU Y, WANG S M, et al. Experimental study on deflagration characteristics of gasoline-air mixture in confined space with different shapes [J]. Journal of Safety Science and Technology, 2017, 13(5): 41–47. DOI: 10.11731/j.issn.1673-193x.2017.05.007.
[23]	傅献彩, 沈文霞, 姚天扬, 等. 物理化学(上) [M]. 5版. 北京: 高等教育出版社, 2005: 99–103.