弹体侵彻过程主动磁探测识别方法  

Identification Method of Projectile Penetration Process Based on Active Magnetic Detection

作　　者：赵静 李长生[1] ZHAO Jing;LI Changsheng(Ministerial Key Laboratory of ZNDY,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学智能弹药技术国防重点学科实验室,江苏南京210094

出　　处：《探测与控制学报》2024年第1期40-46,共7页Journal of Detection & Control

摘　　要：针对现有主动磁探测侵彻过程识别方法存在双磁块体积大、安装一致性差,相对位置扰动对侵彻过程识别影响大的问题,提出利用单个磁块激发磁场的主动磁探测侵彻过程识别方法。通过安装于引信内部的单个磁块产生磁场,靶板内铁磁性的钢筋会使引信内部磁场产生变化,而磁场变化情况与侵彻过程中弹靶相对位置具有对应关系,可以此实现对弹体侵彻过程的识别以控制起爆。利用COMSOL软件建立弹体侵彻钢筋混凝土靶板的有限元仿真模型,通过对侵彻单层靶的弹靶耦合作用下的引信内部磁场变化情况进行仿真,确定磁块和磁传感器相对位置的放置方案。针对多层靶和厚靶的不同侵彻工况进行仿真分析,得到弹体侵彻多层靶和厚靶时磁场变化情况与侵彻过程的对应关系,分析了斜侵角度对主动磁探测的影响,侵彻角度越大,磁场强度变化滞后越明显。研究结果表明,利用单个磁块的主动磁探测方法可用于不同工况的侵彻过程识别并以此来控制起爆。Aiming at the problem that the existing active magnetic detection penetration process identification method has the problems of large volume of double magnetic blocks,poor installation consistency,and great influence of relative position disturbance on the identification of penetration process,an active magnetic detection penetration process identification method using a single magnetic block excitation magnetic field was proposed,and the penetration process under different working conditions was simulated and analyzed.The magnetic field was generated by the magnetic block installed inside the fuze.The ferromagnetic steel bar in the target plate changed the magnetic field inside the fuze,and the change of the magnetic field had a corresponding relationship with the relative position of the projectile-target during the penetration process,which could realize the identification of the penetration process of the projectile to control the initiation.The finite element simulation model of projectile penetrating reinforced concrete target plate was established by COMSOL software.The relative position of magnetic block and magnetic sensor was determined by simulating the change of internal magnetic field of fuze under the coupling of projectile and target penetrating single-layer target.The simulation analysis of different penetration conditions of multi-layer target and thick target was carried out,and the corresponding relationship between the magnetic field change and the penetration process when the projectile penetrates multi-layer target and thick target was obtained.The larger the penetration angle,the more obvious the hysteresis of magnetic field intensity change.The results showed that the active magnetic detection method could be used to identify the penetration process under different working conditions and control the detonation.

关 键 词：引信 磁探测 计层 厚靶 仿真分析 

分 类 号：TJ431.6[兵器科学与技术—火炮、自动武器与弹药工程]