三项式点火增长模型及各参量调控机理研究  

Study on Trinomial Ignition Growth Model and Regulation Mechanism of Various Parameters

作　　者：马沛冉 蔡宣明[1] 侯阳 潘成龙 MA Peiran;CAI Xuanming;HOU Yang;PAN Chenglong(School of Aerospace Engineering,North University of China,Taiyuan 030051,China;School of Semiconductor and Physics,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学航空宇航学院,山西太原030051 [2]中北大学半导体与物理学院,山西太原030051

出　　处：《中北大学学报（自然科学版）》2024年第3期317-325,共9页Journal of North University of China(Natural Science Edition)

基　　金：国家自然科学基金项目(12272356);山西省研究生创新项目(2022Y634)。

摘　　要：为了探明Lee-Tarver三项式点火增长模型各参量的调控机理,根据三项式反应速率方程,分析预测了Lee-Tarver三项式点火增长模型各参量对冲击起爆特性的影响。建立以HMX为施主炸药、H6JJ1为受主炸药的小隔板试验有限元模型,确定了该模型起爆成功时小隔板的临界厚度区间为1.2~1.3 mm。调节受主炸药的各三项式点火增长模型参量,得到了该模型起爆成功时小隔板的临界厚度区间变化,明确了Lee-Tarver三项式点火增长模型各项系数对冲击起爆特性的影响。内向的球形颗粒燃烧b和c取值为0.667;a,d,e,g,λ_(G2min)与冲击起爆所需压力为正相关关系;I,x.G_(1),G_(2),λ_(igmax),λ_(G1max)与冲击起爆所需压力为负相关关系;y和z为压强指数,当0<p<1时,冲击起爆所需压力为负相关关系,当p≥1时,冲击起爆所需压力为正相关关系。本文研究揭示了三项式点火增长模型各参量的调控机理。In order to explore the regulation mechanism of the parameters of Lee-Tarver trinomial ignition growth model,the effects of the parameters of Lee-Tarver trinomial ignition growth model on the impact initiation characteristics were analyzed and predicted based on the trinomial reaction rate equation.A finite element model of a small separator test with HMX as the donor explosive and H6JJ1 as the recipient explosive was established,and the critical thickness interval of the small separator was determined to be 1.2–1.3 mm when the model was successfully detonated.By adjusting the parameters of the trinomial ignition growth model of the main explosive,the variation of the critical thickness interval of the small separator was obtained when the model was successfully detonated,the influence of the coefficients of the Lee-Tarver trinomial ignition growth model on the impact initiation characteristics was clarified.Where b and c represent inward spherical particle combustion,and the value is 0.667;a,d,e,g and λ_(G2min) are positively correlated with the pressure required for impact initiation.I,x,G_(1),G_(2,λigmax),λ_(G1max) are negatively correlated with the pressure required for impact initiation.y and z are the pressure index,when 0<p<1,the pressure required for impact initiation is negatively correlated,and when p≥1,the pressure required for impact initiation is positively correlated.The regulation mechanism of the parameters of the trinomial ignition growth model is revealed.

关 键 词：爆炸力学 点火增长模型 冲击起爆 小隔板试验 

分 类 号：TJ55[兵器科学与技术—军事化学与烟火技术]