椭圆截面弹体侵彻砂浆靶规律分析  

Analysis of projectile penetrating into mortar target with elliptical cross-section

作　　者：王文杰 张先锋[1] 邓佳杰[1] 郑应民[1] 刘闯[1] 

机构地区：[1]南京理工大学机械工程学院,江苏南京210094

出　　处：《爆炸与冲击》2018年第1期164-173,共10页Explosion and Shock Waves

基　　金：国家自然科学基金委员会与中国工程物理研究院联合基金项目(U1730101);中央组织部青年拔尖人才支持计划项目(2014年);装备预研领域基金项目(6140657010116BQ02001)

摘　　要：为研究椭圆截面弹体侵彻混凝土靶规律,基于动态球形空腔膨胀理论,建立椭圆截面弹体侵彻受力模型,计算典型椭圆截面弹体阻力规律和侵彻砂浆靶深度。在此基础上,采用弹道炮发射平台,开展相同质量和长度的2种典型椭圆截面弹体及圆截面弹体垂直侵彻半无限砂浆靶实验。结果表明:理论模型能够反映椭圆截面弹体受力情况,并与实验研究结果吻合较好;椭圆截面弹体长短轴参数的改变对侵彻性能影响较为显著。In this work,based on the theory of dynamic spherical cavity expansion,we presented a force model of penetrating projectiles with an elliptical cross-section to study their penetration performance and,using this model,calculated the resistance of the elliptical cross section and the penetration depths. Further,we performed a series of experiments of two typical elliptical cross-sectioned and circular cross-sectioned projectiles with the same mass and length penetrating perpendicularly semi-infinite grout targets at a velocity of 700 m/s to 800 m/s. The results show that the established theoretical model reflected the force condition of the elliptical cross-section and the theoretical results agreed well with the experiment,and that the size of the cross-section had a significant influence on its penetration performance.

关 键 词：椭圆截面弹体 混凝土目标 空腔膨胀理论 垂直侵彻 

分 类 号：O385[理学—流体力学]