钨球侵彻LY-12铝合金靶板的有限元分析  

Finite element analysis of spherical fragments penetrating LY-12 aluminum alloy target

作　　者：米双山[1] 张锡恩[1] 陶贵明[1] 

机构地区：[1]军械工程学院导弹工程系,河北石家庄050003

出　　处：《爆炸与冲击》2005年第5期477-480,共4页Explosion and Shock Waves

基　　金：中国博士后科学基金项目(2004035620)

摘　　要：介绍了利用LS-DYNA进行球形破片侵彻靶板的网格划分方法,确定了钨球破片和LY-12铝合金的材料模型,利用不同尺寸的球形破片对不同厚度的靶板进行了仿真分析,得出了不同情况下破片对靶板的穿透曲线图、正向跳飞曲线图和破片穿透靶板时的临界入射角和正向跳飞时的临界入射角,并对破片的剩余速度和末角度进行了分析。The meshing method of spherical fragment penetrating target by LS-DYNA is introduced. With the material models of tungsten spherical fragment and LY-12 aluminum alloy target, simulation analysis of spherical fragments penetrating at different initial velocities and incident angles are made, from which the penetration charts, and the ricochet charts are obtained and discussed. The critical incident angles both for penetration and for ricochet are determined, and the terminal velocity and terminal angle of the penetrated fragments are analyzed as well.

关 键 词：爆炸力学 侵彻 有限元分析 破片 靶板 LS-DYNA 

分 类 号：O383.3[理学—流体力学]