重力场作用下的引信球转子动力学特性数值模拟  

Numerical Simulation of Dynamic Characteristics of FuzeBall Rotor under Gravity Field

作　　者：刘艳欣 闻泉[1] 王雨时[1] 朱乐乐 张斌 LIU Yanxin;WEN Quan;WANG Yushi;ZHU Lele;ZHANG Bin(School of Mechanical Engineering,Nanjing University of Science&Technology,Nanjing 210094,China;Shanghai Aerospace Electronics Technology Institute,Shanghai 201108,China)

机构地区：[1]南京理工大学机械工程学院,江苏南京210094 [2]上海航天电子技术研究所,上海201108

出　　处：《探测与控制学报》2023年第6期56-63,共8页Journal of Detection & Control

摘　　要：针对低速旋转弹引信球转子机构解除保险运动过程中的动力学问题,应用刚体动力学理论、欧拉动力学以及外弹道学理论,研究在重力场作用下的引信球转子动力学特性。通过分析引信球转子的力学环境,建立在重力场作用下的引信球转子动力学模型,并采用Matlab软件编制数值模拟程序;以典型引信球转子为例,通过吉尔算法进行数值模拟,得到有无重力作用下的球转子解除保险距离、动态平衡角和章动角随时间的变化规律。结果表明:在重力场作用下的低速旋转弹引信球转子的解除保险距离至少缩短14.00%,动态平衡角散布至少减小18.60%。低速旋转弹引信球转子机构的重力效应可以提高引信发火的可靠性,同时可以使球转子发生反转,但对解除保险可靠性的影响较小。Aiming at the issue of dynamics during the release of the fuze ball rotor mechanism of a low-speed rotary projectile,the rigid body dynamics theory,Euler dynamics theory and external ballistics were applied to study the dynamics characteristics of the fuze ball rotor under gravity field.By analyzing the mechanical environment of the fuze ball rotor,the dynamic model of the fuze ball rotor under gravity field was established,and the numerical simulation program was compiled with Matlab.Taking a typical fuze ball rotor as an example,the numerical simulation was carried out with Gill algorithm.And the law of ball rotor release safety distance,dynamic equilibrium angle and nutation angle with and without gravity were obtained.The results showed that the release distance of the fuze ball rotor for low-speed rotary projectiles under gravity field was shortened by at least 14.00%,and the dynamic equilibrium angle dispersion was reduced by at least 18.60%.The gravity of the fuze ball rotor mechanism for low-speed rotary projectiles could improve the reliability of the fuze ignition,and also reversed the ball rotor,but it had less impact on the reliability of the release insurance.

关 键 词：低速旋转弹 引信 球转子 重力 动力学模型 数值模拟 

分 类 号：TJ431.3[兵器科学与技术—火炮、自动武器与弹药工程]