基于电流密度的分段计算电爆炸模型研究  

Electrical Explosion Model Based on Current Density in Piecewise Calculation

作　　者：于红新 冉汉政[1] 杜涛[1] 丰伟 YU Hongxin;RAN Hanzheng;DU Tao;FENG Wei(Institute of Electronic Engineering,CAEP,Mianyang 621999,China)

机构地区：[1]中国工程物理研究院电子工程研究所,四川绵阳621999

出　　处：《高压物理学报》2018年第6期17-24,共8页Chinese Journal of High Pressure Physics

基　　金：中国工程物理研究院电子工程研究所创新发展基金(S20160801)

摘　　要：瞬态电阻是爆炸丝在电爆炸过程中最重要的参数之一,准确描述爆炸丝电阻的非线性时变特性是电爆炸仿真的关键,决定了电爆炸过程的仿真精度。为解决传统仿真模型精度差的问题,提出了根据电流密度采用分段计算的方法校正传统电阻率-比作用量关系,建立基于电流密度的分段计算电爆炸仿真模型。结果表明,在大脉冲电流条件下,基于电流密度的分段计算电爆炸模型精度较传统的仿真模型精度明显提高,可用于高精度的爆炸丝电爆炸过程研究。Transient resistance is one of the most important parameters in the process of electric explosion.The accurate description of the nonlinear time-varying characteristics of the exploding wire resistance is the key to the simulation of electric explosion,which determines the simulation precision.In order to solve the problem of poor precision associated with traditional simulation model,this paper presents a piecewise calculation method based on current density to correct the relationship between traditional resistivity and specific action,and establishes a piecewise calculation electric explosion simulation model based on the current density.The results show that,under the condition of large pulse current,the precision of the model is higher than that of the traditional simulation model,which can be used to study the electric explosion process with high accuracy.

关 键 词：爆炸丝 电流密度 分段计算 电阻率 比作用量 

分 类 号：TJ450.2[兵器科学与技术—火炮、自动武器与弹药工程] TM133[电气工程—电工理论与新技术]