带壳JH-14C传爆药烤燃实验及响应特性数值模拟  

Cook-off experiment on the JH-14C booster explosive with a shell and the relevant numerical simulation

作　　者：肖有才 王瑞胜 范晨阳 张宏[3] 王志军[1] 孙毅[4] XIAO Youcai;WANG Ruisheng;FAN Chenyang;ZHANG Hong;WANG Zhijun;SUN Yi(College of Mechatronic Engineering,North University of China,Taiyuan 030051,Shanxi,China;Xi’an Institute of Electromechanical Information Technology,Xi’an 710065,Shaanxi,China;The 713th Research Institute,China State Shipbuilding Corporation Limited,Zhengzhou 450015,Henan,China;Department of Astronautic Science and Mechanics,School of Astronautics Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]中北大学机电工程学院,山西太原030051 [2]西安机电信息技术研究所,陕西西安710065 [3]中国船舶重工集团公司第七一三研究所,河南郑州450015 [4]哈尔滨工业大学航天学院航天科学与力学系,黑龙江哈尔滨150001

出　　处：《爆炸与冲击》2023年第7期38-49,共12页Explosion and Shock Waves

基　　金：国家自然科学基金(11802273);山西省青年科学基金(201901D211279)。

摘　　要：为了探究受外部不同温度影响下带壳JH-14C传爆药的响应特性,设计了一套慢速烤燃下可测量JH-14C传爆药温度变化和壳体应变的实验装置,获取了不同升温速率下弹体内部温度随时间变化曲线、慢烤响应过程中装药壳体径向应变历程曲线,揭示了带壳JH-14C传爆药的慢速烤燃响应特性,将烤燃实验中弹体径向应变测试结果和炸药反应烈度相关联,提出了一种弹药烤燃实验反应等级的判定方法;基于热力学和装药化学反应,建立了带壳装药烤燃热传导模型和Arrhenius模型,采用BP神经网络反演了JH-14C传爆药热的热反应参数,对不同升温速率下弹体内部的温度场进行了研究。结果表明:升温速率越低,装药的响应温度越高,响应越剧烈;随着升温速率的降低,炸药的点火区域从炸药两端外缘逐渐向炸药内部转移。In order to explore the cook-off response characteristics of the JH-14C booster explosive with a shell under different external temperatures,a set of experimental devices was designed for measuring the cook-off response temperatures at multiple points of the JH-14C booster explosive and for monitoring the deformation of the shell.The explosive temperatures were measured from its edge to its center.The strain-time curves of the shell were recorded by a dynamic strain indicator and a high-temperature strain gauge.The cook-off experiments with the heating rates of 1.0℃/min and 3.3℃/h were conducted.The temperature was raised at different points of the explosive and the strains at different points of the shell were obtained.The intensity of the shock wave in the process of the slow cook-off experiment is calculated by using the thin-walled cylinder principle,and the violence of the reaction of the JH-14C booster explosive with a shell is quantitatively characterized by using the intensity of blast loading.The response characteristics of the JH-14C booster explosive with a shell in the slow cook-off experiment is revealed.Though the relationship between the shell strain results and the reaction intensities,a method is proposed to describe the reaction level of the JH-14C booster explosive with a shell.Based on the thermodynamics and the chemical reaction of the explosive,the heat conduction model is established.The decomposition reaction of the explosive is described by the Arrhenius equation.A back propagation(BP)neural network is used to invert the heat reaction parameters of the JH-14C booster explosive.Comparison between the experimental and simulated results shows that the presented model can be used to obtain the cook-off response characteristics of the explosive obtained by simulation with high precision.The internal temperature field response of the projectile body is also studied under different heating rates.The results exhibit that the lower the heating rate,the higher the response temperature of the ch

关 键 词：JH-14C传爆药 烤燃实验 烤燃响应 升温速率 热反应参数 BP神经网络 

分 类 号：O381[理学—流体力学]