非对称类椭圆截面弹体斜贯穿铝靶数值模拟研究  

Numerical simulation of oblique penetration of shaped elliptical cross section projectile through aluminum target

作　　者：岳胜哲 陈利[1] 张晓伟[1] 李元龙 张庆明[1] YUE Shengzhe;CHEN Li;ZHANG Xiaowei;LI Yuanlong;ZHANG Qingming(State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;Beijing Institute of Space Long March Vehicle, Beijing 100076, China)

机构地区：[1]北京理工大学爆炸科学与技术国家重点实验室,北京100081 [2]北京航天长征飞行器研究所,北京100076

出　　处：《兵器装备工程学报》2022年第4期127-133,共7页Journal of Ordnance Equipment Engineering

基　　金：基础加强项目(2020-JCJQ-ZD-211)。

摘　　要：为研究非对称类椭圆截面弹体的穿甲问题,通过定义非对称类椭圆截面弹体的不对称度,建立了5种弹体模型,对每种弹体在不同初始速度条件下30°倾斜铝靶的贯穿过程进行了数值模拟研究。结果表明:在该初速范围条件下,与传统圆截面弹型相比,非对称类椭圆截面弹型弹道极限速度变低,偏转角度增大。对于非对称类椭圆截面弹型,弹道极限速度和弹体偏转角度、角速度均随着不对称度的增大而增大。弹体所受偏转力矩在弹头与靶板相互作用阶段随着不对称度的增大而减小,在弹身与靶板相互作用阶段随着不对称度的增大而增大。不对称度对弹体弹道偏移的影响随着弹体初速的增加而降低。仿真结果对异构型弹体截面形状设计具有参考意义。To study the armor-piercing problem of asymmetric elliptic section projectile,five projectile models were established by defining the asymmetry degree of asymmetric elliptic section projectile,and the penetration process of each projectile with 30 inclined aluminum target under different initial velocity conditions was numerically simulated.The results show that under this initial velocity range,the ballistic limit velocity of asymmetric elliptic-section projectile decreases,and the deflection angle increases compared with the traditional circular-section projectile.For asymmetric elliptic cross-section projectile,the ballistic limit velocity,deflection angle,and angular velocity of projectile all increase with the increase of asymmetry.The deflection moment of projectile decreases with the increase of asymmetry in the stage of interaction between the warhead and target plate and increases with the increase of asymmetry in the stage of interaction between projectile and target plate.The influence of asymmetry on the ballistic deviation of the projectile decreases with the increase of the initial velocity of the projectile.

关 键 词：非对称类椭圆截面 不对称度 贯穿 姿态偏转 弹道极限速度 

分 类 号：O385[理学—流体力学]