射弹侵彻中的攻角效应  

Effect of Attack Angle on a Projectile's Penetration

作　　者：刘瑞朝[1] 何满潮[1] 任辉启 施鹏 

机构地区：[1]中国矿业大学岩土工程研究所,北京100083 [2]洛阳水利工程研究所,河南洛阳471023

出　　处：《北京理工大学学报》2003年第1期26-29,共4页Transactions of Beijing Institute of Technology

基　　金：国家"九七三"计划项目 ( 5 130 9-2 -6 )

摘　　要：为了研究偏航机理 ,在受力模型简化的基础上利用撞击动力学理论 ,分析射弹撞击异形体后的动力学特性 ,并利用数值模拟技术分析攻角及偏航角对侵彻的影响 .研究表明 :射弹撞击异形体将会产生攻角和偏航角 ,在对均质材料的侵彻过程中 ,由于初始攻角的存在 ,致使射弹在侵彻过程中受到巨大的不对称力作用 ,而使偏航角逐渐加大 ,反映在侵彻路径上 ,表现为侵彻路径呈曲线状 ,有效侵彻深度显著缩小 .Analyzes the dynamic characteristics of a projectile after its impact with a shaped target, and as well as the effects of the angles of attack and yaw, respectively, on penetration, based on a simplified mechanical model and numerical calculations. The study shows that the angles of attack and yaw will occur when the projectile impinges on a shaped target, and that in its penetration of nonuniform materials, occurrence of the initial attack angle will induce enormous assymmetric effect in the projectile's penetration process, and the angle of yaw gradually increases. The penetration path will become curvilinear, and the effective penetration depth will be markedly reduced.

关 键 词：射弹 攻角效应 侵彻路径 偏航角 偏航机理 撞击动力学 遮弹结构 

分 类 号：TJ41[兵器科学与技术—火炮、自动武器与弹药工程] TJ012.4