含攻角动能块撞击带壳B炸药冲击起爆阈值研究
Impact detonation threshold study of kinetic energy blocks with angle of attack impacting cased B explosives
孙乔溪 1陈利 1郭香华 1张庆明1
作者信息
- 1. 北京理工大学 机电学院,北京 100081
- 折叠
摘要
为研究动能块攻角对带壳B炸药冲击起爆阈值速度的影响规律,使用LS-DYNA仿真软件和Lee-Tarver点火与增长模型,对钨合金动能块撞击带壳B炸药进行数值模拟,得到了攻角 0°～90°条件下撞击不同盖板厚度(6、10、14 mm)装药的冲击起爆阈值速度;在Jacobs-Roslund冲击起爆判据模型中引入攻角修正项,所得到的冲击起爆判据模型与数值模拟结果吻合较好.结果表明:壳体厚度在6～14 mm范围内,随着攻角的增大,冲击起爆阈值速度先增大后减小.
Abstract
In order to study the effect of kinetic block angle of attack on the impact detonation threshold velocity of cased B explosives,numerical simulations were conducted using LS-DYNA simulation software and the Lee-Tarver ignition and growth model to obtain the impact detonation threshold velocity of tungsten alloy kinetic blocks impacting cased B explosives with different cover thicknesses(6 mm,10 mm and 14 mm)at angles of attack from 0° to 90°.The angle of attack correction is introduced into the Jacobs-Roslund impact initiation criterion model,and the obtained impact initiation criterion model is in good agreement with the numerical simulation results.The results show that the impact detonation threshold velocity increases and then decreases with increasing angle of attack in the shell thickness range of 6～14 mm.
关键词
冲击起爆/动能块/带壳B炸药/起爆阈值速度/数值模拟Key words
impact detonation/kinetic energy block/cased B explosives/threshold velocity/numerical simulation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据