Shock Initiation Experiments with Modeling on a DNAN Based MeltCast Insensitive Explosive  

作　　者：Feichao Miao Dandan Li Yangfan Cheng Junjiong Meng Lin Zhou 

机构地区：[1]School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,China [2]Composite Explosive Research Department,Xi'an Modern Chemistry Research Institute,Xi'an 710065,China [3]State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing 100081,China

出　　处：《Defence Technology（防务技术）》2024年第2期655-662,共8页Defence Technology

基　　金：Scientific Research Foundation for High-level Talents of Anhui University of Science and Technology(Grant No.2021yjrc38);Anhui Provincial Natural Science Foundation(Grant No.2208085QA27);National Natural Science Foundation of China(Grant Nos.11972046,12002266);the authors would like to thank these foundations for financial support.

摘　　要：2,4-dinitroanisole(DNAN)is a good replacement for 2,4,6-trinitrotoluene(TNT)in melt-cast explosives due to its superior insensitivity.With the increasing use of DNAN-based melt-cast explosives,the prediction of reaction violence and hazard assessment of the explosives subjected to shock is of great significance.This study investigated the shock initiation characteristics for a DNAN-based melt-cast explosive,DHFA,using the one-dimensional Lagrangian apparatus.The embedded manganin gauges in the apparatus record the pressure histories at four Lagrangian positions and show that shock-todetonation transition in DHFA needs a high input shock pressure.The experimental data are analyzed to calibrate the Ignition and Growth model.The calibration is performed using an objective function based on both pressure history and the arrival time of shock.Good agreement between experimental and calculated pressure histories indicates the high accuracy of the calibrated parameters with the optimization method.

关 键 词：2 4-Dinitroanisole(DNAN) Shock initiation Insensitive explosives Ignition and growth model Equation of state(EOS) 

分 类 号：TQ560.1[化学工程—炸药化工]