弹道学报2024，Vol.36Issue(4)：55-62,8.DOI:10.12115/j.issn.1004-499X(2024)04-007
屏蔽装药的冲击引爆特性研究和量纲分析
Dimensional Analysis and Investigation of the Shock Initiation Characteristics of Covered Charge
摘要
Abstract
In order to study the damage effect of the near-field strong shock wave on the covered charge,the dimensional analysis method on the sympathetic detonation with covered plate was established theoretically.The shock initiation process of covered-pressed TNT was numerically simulated by nonlinear finite element program ANSYS/LS-DYNA.The influence of covered plate thickness,donor charge mass,length-diameter ratio of donor charge on the detonation distance during non-contact explosion was analyzed.The functional relationship between covered-plate thickness and sympathetic detonation distance was obtained by a non-linear least square method,as well as the functional relationship between donor charge mass and sympathetic detonation distance.The results show that the dimensional analysis results are in good agreement with the fitting formula,which fully demonstrates the validity and accuracy of the fitting formula.The calculated detonation distance of the non-contact explosion decreases with the increase of the covered-plate thickness.While the covered-plate thickness is less than 3 mm,the increase of the covered-plate thickness has a greater impact on the sympathetic detonation distance.While the thickness is greater than 3 mm,further increasing the covered-plate thickness has significantly smaller effect on increasing the shock initiation resistance of explosive.When the length-diameter ratio of the donor charge remaining constant,the detonation distance of the non-contact explosion is linear with the donor-charge radius,and cubic with the donor-charge mass.Under the donor-charge mass remains constant,the detonation distance of the non-contact explosion is the largest when the diameters of the donor-charge and the acceptor charge are equal.关键词
屏蔽装药/冲击引爆/殉爆距离/量纲分析/拟合公式Key words
covered charge/shock initiation/sympathetic detonation distance/dimensional analysis/fitting formula分类
数理科学引用本文复制引用
陈兴旺,王冕,贾波,陈超,焦元威,唐奎..屏蔽装药的冲击引爆特性研究和量纲分析[J].弹道学报,2024,36(4):55-62,8.基金项目
国家自然科学基金项目(12102202) （12102202）
