摘要为了提高点火后的密封问题,研究出了隔板起爆器。然而传统的起爆器为敏感装药,安全性能较差。为解决起爆器安全问题,用LS-DYNA软件仿真研究钝感装药隔板起爆器。仿真选用的隔板材料为40CrNiMoA钢,该材料经验证冲击波衰减率比较小,且其他性能较好;施主装药和受主装药均选择许用的钝感炸药JH-14,该炸药易被起爆。通过仿真研究了隔板厚度、炸药装药量、梯形孔尺寸等因素对于传爆的影响,并找到了一种适合传爆的结构。从设计原理上看,该隔板起爆器可以实现密封要求,且安全性较好,具有工程应用前景。60103
关键词 火工品 隔板起爆器 钝感装药 安全性 动力学仿真
毕业设计说明书(毕业论文)外文摘要
Title Insensitive through bulkhead initiator simulation development
Abstract In order to improve the ignition problems after sealing,the clapboard of detonator was researched out.However the traditional initiators for sensitive charge don’t work well in security aspects.To solve the problem of electric detonator safety,LS-DYNA software was applied to develop insensitive propellant clapboard initiators.The diaphragm material for simulation is determined as 40CrNiMoA steel,whose shock wave attenuation rate is smaller and other performance is better. Donor and acceptor explosive both select JH-14 insensitive high explosive,which is relatively easy to blasting.The experiment plans to discuss the effect of the change of thickness of the diaphragm,the charge mass ,the size of ladder hole .From the point of view of design principles,insensitive through bulkhead initiator can realize accurate booster and itself is safe as well.Therefore insensitive through bulkhead initiator have good engineering application prospect.
Keywords: explosive device through bulkhead initiator deterred charge security dynamics simulation
1 绪论 1
1.1 选题背景和意义 1
1.1.1 隔板起爆器的发展史 1
1.1.2 隔板起爆器研究的局限性 2
1.1.3 本课题拟取得的成果 2
1.2 隔板起爆器简介 2
1.2.1 爆炸序列的功能作用 2
1.2.2 隔板起爆器的基本组成和应用 3
1.3 火工品简介 4
1.3.1 火工品的基本功能和应用 4
1.3.2 火工品的发展史 4
1.3.3 火工品在军事上的应用 4
1.3.4 火工品在民事上的应用 5
1.3.5 火工品的设计原则和设计要求 5
1.4 火炸药简介 5
1.4.1 火炸药的组成 5
1.4.2 火炸药爆炸的冲击波效应 6
1.4.3 爆轰的特征参数 6
1.5 本文的主要研究内容 7
2 冲击起爆 9
2.1 爆轰波的CJ理论