GHL01炸药烤燃实验的尺寸效应与数值计算  

Size Effect and Numerical Simulation of Cook-off Test for CHL01 Explosive

作　　者：牛余雷[1] 冯晓军[1] 郭昕[1] 南海[1] 王浩[1] 

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《火炸药学报》2014年第5期37-41,共5页Chinese Journal of Explosives & Propellants

基　　金：国家安全重大基础研究项目

摘　　要：在不同升温速率下,对不同尺寸的GHL01炸药装药进行了烤燃实验,建立了烤燃实验的计算模型。分析了装药尺寸对炸药烤燃临界环境温度和响应程度的影响,根据实验结果标定了反应模型的动力学参数。结果表明,GHL01炸药的烤燃实验存在一个临界升温速率,当升温速率大于临界升温速率时,随着装药直径的增加,炸药发生点火的临界环境温度增大,当升温速率小于临界升温速率时,随着装药直径的增加,临界环境温度先减小后增大,存在极小值（即最小临界环境温度）,且随着升温速率的减小,最小临界环境温度降低。GHL01炸药的临界升温速率为0.2～0.4K/min。按照GHL01炸药点火的原因不同,提出了以临界升温速率作为慢速烤燃和快速烤燃的分界点。The cook off tests for GHL01 explosive charge with different sizes were carried out at different heating rates. A calculation model of cook-off test of explosive was established. The effect of charge size on the critical environment temperature and degree of response for cook-off of explosive was analyzed. According to the experimen- tal results, the kinetic parameters of the reaction model were calibrated. Results show that there is a eritical heating rate in the cook-off test of GHL01 explosive. When the heating rate is greater than the critical heating rate, with the increase in diameter of the charge, the critical environment temperature increases occurring explosive ignition. When the heating rate is less than the eritieal heating rate, with the increase in diameter of the charge, the critical environ- ment temperature first decreases and then increases, there is a minimum value （which is minimum critical environ- ment temperature）, and as the heating rate decreases, the minimum critical environment temperature decreases. The critical heating rate of the GHL01 explosive is between 0.2K/min to 0.4K/min. According to the different reasons for explosives ignition, the critical heating rate as a cut-off point of slow cook-off and fast cook-off is proposed.

关 键 词：物理化学 热安全性 烤燃实验 尺寸效应 数值计算 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术] O642[理学—物理化学]