一种反射增强型起爆结构的数值模拟研究  

Numerical Study of A Reflection-enhanced Initiation Structure

作　　者：郭洪卫[1,2] 张浩宇 李晓刚 施长军 邓海[1] GUO Hong-wei;ZHANG Hao-yu;LI Xiao-gang;SHI Chang-jun;DENG Hai(Xi’an Modern Chemistry Research Institute,Xi’an,710065;State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081)

机构地区：[1]西安近代化学研究所,陕西西安710065 [2]北京理工大学爆炸科学与技术国家重点实验室,北京100081

出　　处：《火工品》2021年第5期19-23,共5页Initiators & Pyrotechnics

摘　　要：采用动力学软件AUTODYN-2D模拟了一种反射增强型起爆结构和普通起爆结构的爆轰波传播、反射、碰撞、成长以致最后起爆主装药的过程。用Lee-Tarver点火增长模型来描述传爆药爆轰后引起不敏感主装药的反应程度和爆轰情况,以主装药中的冲击压力值、反应度(ALPHA)、主装药完全起爆的时间和距离等作为衡量参数,对比了两种起爆结构的输出能量和起爆能力,探索了反射筒的直径和高度对反射增强型起爆结构起爆能力的影响。数值模拟结果验证了基于爆轰波反射和叠加的反射增强型起爆结构的原理正确性,并提出了反射筒结构的设计原则。The initiation process of a reflection enhanced initiation structure and a normal initiation structure were calculated by using AUTODYN-2D software,and the propagation,reflection,impact and growth of the detonation waves were considered.The Lee-Tarver ignition and growth model was used to simulate the reaction ratio and detonation process of the insensitive explosive.These parameters including pressure,reaction ratio,detonation time and distance were chosen to describe the initiation ability of the two kinds of initiation structures,and the influence of reflection tube diameter and height on the initiation ability was also studied.The study results validated that the initiation performance can be enhanced based on reflection and superposition of detonation waves,and then the design principle of reflection tube was given.

关 键 词：起爆结构 反射增强 点火增长模型 起爆能力 

分 类 号：TJ456[兵器科学与技术—火炮、自动武器与弹药工程]