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1. 北京理工大学 机电学院, 北京 100081
2. 西安机电信息技术研究所, 陕西 西安 710065
Received:17 June 2024,
Published Online:28 June 2025,
Published:10 June 2025
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Wenzhong LOU, Wenxing KAN, Hengzhen FENG, et al. Safety Analysis and Equivalent Test Method for Fuzes during Fast Cook-off[J]. Acta Armamentarii, 2025, 46(6): 240463.
Wenzhong LOU, Wenxing KAN, Hengzhen FENG, et al. Safety Analysis and Equivalent Test Method for Fuzes during Fast Cook-off[J]. Acta Armamentarii, 2025, 46(6): 240463. DOI: 10.12382/bgxb.2024.0463.
引信热防护技术与等效试验技术是提升引信快速烤燃安全性与热防护多轮优化设计效率的关键。根据引信一维热传导模型
构建炸药及引信壳体径向温度分布方程
建立基于铝-硅气凝胶的航空炸弹引信热防护模型
通过引信快速烤燃仿真模拟研究
获得引信内部炸药经历20min 800℃烤燃环境的温度变化曲线。隔铝-硅气凝胶的临界厚度为3mm
炸药最终温度比其5s爆发点(280℃)低87.8℃
可以保证引信的热安全性。以铝-硅气凝胶包覆的引信为验证主体
结合快速烤燃标准试验方法建立基于仿真分析-高温火焰喷射试验平台的引信快速烤燃等效试验方法。试验结果表明
标准试验的引信易损点测温数据与仿真数据对比
精度优于91%;等效试验下引信易损点测量温度与标准试验测量结果对比
精度优于95%。试验结果表明
标准试验的引信易损点测温数据与仿真数据对比
标准试验精度优于91%;等效试验下引信易损点测量温度与标准试验测量结果对比
等效试验精度优于95%。
The thermal protection technology and equivalent testing technology are the key to improving the safety of fuzes during fast cook-off and the iterative efficiency of multiple rounds of optimization design of thermal protection.According to the one-dimensional fuze heat conduction model
the theoretical equations for the radial temperature distributions of explosive and fuze shell are constructed.An aluminum-silicon aerogel thermal protection model is established for aerial bomb fuze.The simulation study on the fast cook-off of fuze is carried out to obtain the temperature change curve of the explosive inside the fuze undergoing a 20-minute heating environment at 800℃.The critical thickness of thermal protection material is 3 mm
and the final temperature of explosive is 87.8℃ lower than its 5 s explosion temperature (280℃)
which can ensure the thermal safety of fuze.Taking the fuze coated with aluminum-silicon aerogel as the verification subject
an equivalent test method for the fast cook-off of fuze is established based on simulation analysis and high-temperature flame injection test platformm
which is combined with the standard fast cook-off test method.Test results show that when comparing the temperature measurement data of fuze vulnerable points in standard tests with simulation data
the accuracy of the standard test results exceeds 91%.When comparing the measured temperature of fuze vulnerable points in equivalent tests with the measurement results of standard tests
the accuracy of the equivalent test results exceeds 95%.
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李亮亮 , 沈飞 , 王胜强 , 等 . 外部涂层及包覆层对HAE装药快速烤燃实验的影响 [J ] . 火炸药学报 , 2019 , 42 ( 2 ): 202 - 206 . DOI: 10.14077/j.issn.1007-7812.2019.02.017 http://doi.org/10.14077/j.issn.1007-7812.2019.02.017 为研究外电场对共晶含能材料HMX/DMI感度的影响,分别采用DFT-B3LYP-D3、M06-2X-D3和ωB97XD方法,在6-311+G(d, p)水平下,对HMX/DMI的稳定构型施加±0.005a.u.、±0.010a.u.、0.00a.u.的外电场,分析了电子密度转移、硝基基团电荷、分子表面静电势及引发键变化。结果表明,施加正向外电场时,电场强度越大,炸药感度越高。施加负向外电场时,电场强度越大,炸药感度越低; 随着负向外加电场的增强,引发键电子云密度越大,引发键强度增大,导致HMX/DMI感度降低; 负向外加电场增加,硝基基团所带负电荷由0.126e增至0.325e,感度降低; 分子表面静电势研究分析表明,施加负向电场时,分子表面静电势增大,共晶感度降低; 引发键变化分析表明,负向外加电场强度增加,引发键键长由0.1386nm降至0.1367nm,引发键键解离能由180.252kJ/mol增加到180.782kJ/mol,共晶化合物感度降低。
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孙晓乐 , 刘海青 , 万力伦 , 等 . 高效隔热材料在战斗部中的热防护性能研究 [J ] . 兵工自动化 , 2022 , 41 ( 12 ): 122 - 124 ,128.
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潘玥 , 李定华 , 杨荣杰 , 等 . 烤燃环境下引信及其包装材料的热防护涂层性能 [J ] . 兵工学报 , 2021 , 42 ( 6 ): 1169 - 1177 . DOI: 10.3969/j.issn.1000-1093.2021.06.006 http://doi.org/10.3969/j.issn.1000-1093.2021.06.006 为提高引信及其包装箱的隔热或防火性能,避免在遇热或火焰时导致安全隐患,研究开发兼备防火及隔热性能的复合防护涂料。结合慢速与快速烤燃模拟试验,分析涂层结构设计对引信外壳及包装材料热防护行为和火安全行为的影响。结果表明:在慢速烤燃测试中,对钢板单独使用防火涂料时,不能起到隔热作用;在防火涂料上涂覆隔热涂料形成复合涂层后,防护效果有显著提升;在慢速和快速烤燃测试中,钢板背面温度分别降低了32 ℃和157 ℃. 进一步将复合涂层应用于引信壳体和引信包装箱板材,背面温度在慢速烤燃测试中分别降低33 ℃和21 ℃,在快速烤燃测试中分别降低105 ℃和117 ℃,起到了有效隔热或防火作用。
PAN Y , LI D H , YANG R J , et al . Performance of thermal protection coating of fuze and its packaging materials in cook-off test [J ] . Acta Armamentarii , 2021 , 42 ( 6 ): 1169 - 1177 . (in Chinese) DOI: 10.3969/j.issn.1000-1093.2021.06.006 http://doi.org/10.3969/j.issn.1000-1093.2021.06.006 A sandwich structural coating with both fire resistance and thermal insulation properties is developed to improve the heat insulation/fire resistance performances of fuze and its packaging box. The use of coatings help to avoid the potential safety hazards caused by thermal stimulation. The slow and fast cook-off tests were made to analyze the thermal insulation performances of different coating structures. The results show that the fireproof coating used alone could not serve as a thermal insulation in the slow cook-off test. After applying an insulation outer coating layer, a strong protective layer could be formed under thermal stimulation. The temperature on the back side of steel plate is reduced by 32 ℃ in the slow cook-off test and 157 ℃ in fast cook-off test. The sandwich structural coating is applied to fuze shells and their packaging boxes. And it plays an important role in heat insulation/fire resistance performance. Compared with the unprotected specimen, the sandwich structural coatings could reduce the temperatures on the back side of steel plate by 21 ℃ and 33 ℃ in the slow cook-off test, and 117 ℃ and 105 ℃ in the fast cook-off test.
白孟璟 , 段卓平 , 白志玲 , 等 . 内/外隔热复合结构炸药装药快速烤燃热防护效应 [J ] . 兵工学报 , 2024 , 45 ( 5 ): 1555 - 1563 . DOI: 10.12382/bgxb.2023.0065 http://doi.org/10.12382/bgxb.2023.0065 为了研究快速烤燃(火烧)条件下炸药装药内/外隔热复合结构(内隔热材料/外阻燃材料)的热防护效应,对多种内/外隔热复合结构的炸药装药进行多点测温快速烤燃试验,得到火焰场和炸药装药各测点的温度-时间曲线及装药点火响应时间。开展内/外隔热复合结构炸药装药快速烤燃数值模拟,获得内/外隔热复合结构对装药快速烤燃点火响应时间的影响规律。研究结果表明:在快速烤燃过程中,外阻燃材料由于火烧变性存在导热增强及隔热减弱效应,在数值模拟中需考虑该效应;无论使用单独的隔热/阻燃材料还是使用内/外隔热复合结构,炸药装药的点火响应时间均随着材料涂覆厚度增加而延后,其中内/外隔热复合结构具有更好的热防护能力;点火位置均发生在装药端面棱角处,装药点火后反应烈度不受内/外隔热复合结构影响,反应等级均为爆燃;对于一定热防护性能范围内的隔热阻燃材料,壳体外表面涂层材料是耐高温纳米隔热材料、壳体内表面涂层材料是高效隔热防护材料时复合结构的隔热效果最好,并且当需求的隔热效果给定时,可考虑优先增加壳体外表面涂层的涂覆厚度,实现以最小涂覆厚度的内/外隔热复合结构满足所需的隔热效果。研究成果可为提升弹药热安全性设计提供参考。
BAI M J , DUAN Z P , BAI Z L , et al . Fast cook-off thermal protection effects of inner and outer heat-insulating composite structures of explosive charge [J ] . Acta Armamentarii , 2024 , 45 ( 5 ): 1555 - 1563 . (in Chinese) DOI: 10.12382/bgxb.2023.0065 http://doi.org/10.12382/bgxb.2023.0065 In order to study the thermal protection effects of the inner and outer heat-insulating composite structures (inner heat-insulating material/outer combustion-insulating material) of explosive charges under the condition of fast cook-off (burning), the multi-point temperature measurement fast cook-off experiments are carried out on explosive charges with various forms of inner and outer heat-insulating composite structures. The temperature-time curves of flame and each measuring point of explosive charge and the ignition response time of the charge are obtained. The fast cook-off ignition of explosive charges with different inner and outer heat-insulating composite structures is numerically simulated to obtain the influence law of inner and outer heat-insulating composite structures on the ignition response time of charge under fast cook-off. The results show that the thermal conductivity of the outer combustion-insulating material is increased and its thermal insulation is weakened due to the burning and denaturation of the material during the process of fast cook-off experiment. This effect should be considered in numerical simulation. The ignition response time of explosive charge is delayed with the increase in the coating thickness of both heat-insulating and combustion-insulating materials, whether using separate insulating/combustion-insulating materials or inner and outer heat-insulating composite structures. The inner and outer heat-insulating composite structures have better thermal protection ability and can significantly delay the ignition response time of the charge. The ignition position all occurs at the corner of the end face of the charge, and the reaction intensity after ignition is not affected by the inner and outer heat-insulating composite structures and is always the deflagration. For insulating/combustion-insulating materials within a certainprotection performance range, the composite structure has the best heat-insulating effect when the coating material on the outer surface of the shell is HGN and the coating material on the inner surface of the shell is GXTI, and when the required heat-insulating effect is given, it is possible to consider increasing the coating thickness of the outer surface coating of the shell first to achieve the optimal thermal protection effect of inner and outer heat-insulating composite structures with minimum coating thickness. The research results provide reference for improving ammunition thermal safety design.
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ZHU M , WANG S A , HUANG H , et al . Numerical and experimental study on the response characteristics of warhead in the fast cook-off process [J ] . Defence Technology , 2021 , 17 ( 4 ): 1444 - 1452 . DOI: 10.1016/j.dt.2020.08.001 http://doi.org/10.1016/j.dt.2020.08.001 The response characteristics of the warhead under thermal stimuli conditions are important to the safety improvement. The goal of this study is to obtain data on the warhead in the fast cook-off process. In this paper, a numerical calculation method is proposed, whose reliability is supported by comparison with experimental results. Through the numerical calculation, the temperature distribution, temperature change, and ignition time are acquired. The numerical results show that the ignition time is 76 s after the warhead started to burn and that the maximum temperature of the explosive's outer surface is 238.3 °C at the ignition time. The fast cook-off experiment of the warhead is implemented so as to get the flame temperature and reaction grades that are not available through numerical calculation. The experimental results show that the overpressure fails to reach the preset minimum value which is equivalent to 6 kg of TNT and that the reaction grade is deflagration. The research results have reference value for the design of the warhead and the reduction of detonation risks. © 2020 The Authors
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王晓峰 . 关于不敏感弹药的几点认识 [J ] . 火炸药学报 , 2022 , 45 ( 3 ): 285 - 289 . DOI: 10.14077/j.issn.1007-7812.202112003 http://doi.org/10.14077/j.issn.1007-7812.202112003 以聚氨酯热熔胶、铝粉和高氯酸铵组成的复合固体推进剂为研究对象,首先通过压延物理混合方法制备了复合固体推进剂,采用SEM和EDS方法对其形貌和组分分布进行了表征,测试了其力学性能、密度和机械感度。为深入了解聚氨酯热熔胶基复合推进剂的流变性能,进一步使用哈克流变仪(HAAKE MARS)研究了增塑剂、剪切速率和温度对其黏度的影响。结果表明,聚氨酯热熔胶基热塑性复合推进剂为假塑性流体,符合Ostwald-de Wale模型。与纯热熔胶体系相比,加入增塑剂的聚氨酯热熔胶基热塑性复合推进剂的高温黏度由4&#215;10<sup>6</sup>Pa·s降至1.5&#215;10<sup>6</sup>Pa·s,黏流活化能由41.53kJ/mol降至28.57kJ/mol。此外,聚氨酯热熔胶基热塑性推进剂随温度升高和剪切速率的增加其黏度逐渐减小,纯热熔胶基推进剂的黏流活化能随剪切速率的增加由41.53kJ/mol降至31.20kJ/mol。
WANG X F . Some opinions about insensitive munitions [J ] . Chinese Journal of Explosives & Propellants , 2022 , 45 ( 3 ): 285 - 289 . (in Chinese)
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