含能材料2024，Vol.32Issue(11)：1174-1181,8.DOI:10.11943/CJEM2024072
基于慢烤实验的混合炸药热传导系数计算方法
Calculation Method of Thermal Conductivity of Explosives Based on Slow Cook-off Experiment
摘要
Abstract
As an important thermodynamic parameter of explosives,thermal conductivity significantly affects the ignition re-sponse characteristics of explosive charge.In order to quickly and effectively obtain the thermal conductivity of explosives with-out tests,an axisymmetric heat conduction theoretical model of typical cylindrical charge structure is established,and its steady-state analytical solution is derived.Also,a method for calculating the thermal conductivity of explosives is proposed based on the slow cook-off experimental data.The thermal conductivity of a new type of insensitive explosive,GOL-1(HMX/Al/AP/Binder),is determined.The numerical simulation results of the ignition response of small-size charge structure under typical cook-off conditions shows that the calculated results of the charge center temperature-time curves at different heating rates are ba-sically consistent with the experimental results,and the deviations of ignition temperature at charge center and ignition time be-tween the calculated and experimental results are 2.27%and 1.12%at most,which indicates the effectiveness of the thermal conductivity of the GOL-1 and the feasibility of the numerical simulation method.The established calculation method reveals the thermal conductivity characteristics and rules based on the temperature-time curves of slow cook-off experiments,which is more suitable for calculating the thermal conductivity of explosives compared with volume-weighted method and string or parallel heat conduction model.In the absence of experimental data for determining the thermal conductivity of new explosives,this method is an effective determination method,providing a basic parameter for the design and evaluation of thermal safety of ammunition and promoting the development of digital design and quantitative evaluation of safe ammunition.关键词
混合炸药/热传导系数/热传导方程解析解/慢速烤燃/数值模拟Key words
explosives/thermal conductivity/analytical solution of heat conduction equation/slow cook-off/numerical simulation分类
军事科技引用本文复制引用
许礼吉,白志玲,段卓平,黄风雷..基于慢烤实验的混合炸药热传导系数计算方法[J].含能材料,2024,32(11):1174-1181,8.基金项目
国家自然科学基金(12002044) National Natural Science Foundation of China(No.12002044) （12002044）
