弹体侵彻岩石-混凝土复合靶数值分析
Numerical Analysis of Projectiles Penetrating Rock-Concrete Composite Targets
韩鸿宇 1姚文进 1张笑瀛 2张小静 1徐鹏1
作者信息
- 1. 南京理工大学机械工程学院,江苏南京 210094
- 2. 63863部队,吉林白城 137001
- 折叠
摘要
为研究弹体高速侵彻花岗岩-C60混凝土复合靶板的侵彻规律,通过显示动力学软件LS-DYNA建立了尖卵形弹体侵彻复合靶板的数值仿真模型,分析了不同入射速度,不同靶板倾角下弹体高速侵彻复合靶板作用过程,得出弹体速度、靶板倾角对弹体侵彻复合靶板的影响规律.由仿真结果可得:弹体余速随入射速度的增加呈现先增大后减小的趋势,弹体磨蚀率随入射速度的增加呈现增大的趋势.当弹体入射速度一定时其偏转角随靶板倾角的减小呈现增大的趋势,且弹体侵彻第2层靶板时其偏转角较第1层靶板还有所增加.弹体过载与入射速度呈正相关且与弹体质量磨蚀有关,当弹体弯曲时弹体过载会上升.
Abstract
In order to study the penetration law of projectiles penetrating composite targets of granite-C60 concrete at high speed,a numerical simulation model of a projectile with a sharp ogive penetrating a composite target is established by using the display dynamics software LS-DYNA.The process of the projectile penetrating the composite target at high speed under different incident velocities and different target plate angles are analyzed,and the influence law of the projectile velocity and target plate angles on the projectile penetrating the composite target is obtained.According to the simulation results,the residual velocity of the projectile increases first and then decreases with the increase of the incident ve-locity,and the abrasion rate of the projectile increases with the increase of the incident velocity.When the incident velocity of the projectile is constant,its deflection angle increases inversely with the target plate angle.At the second layer of the target plate,its deflection angle will be even bigger than when it penetrated the first layer.The overload of the projectile is positively related to the incident velocity and is related to the abrasion of the projectile mass.The overload of the projectile will rise when the projectile body is bent.
关键词
岩石-混凝土靶/侵彻效应/偏转角/弹体磨蚀/数值模拟Key words
rock-concrete target/penetration effect/deflection angle/projectile abrasion/numerical simulation引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据