基于磁异探测的侵彻复杂工况磁响应仿真分析  

Simulation analysis of magnetic response under complex penetration conditions based on magnetic anomaly detection

作　　者：赵静[1] 王瑞波 李长生[1] ZHAO Jing;WANG Ruibo;LI Changsheng(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;Henan North Star Optical Electromechanical Co.,Ltd.,Dengzhou 474150,China)

机构地区：[1]南京理工大学机械工程学院,南京210094 [2]河南北方星光机电有限责任公司,河南邓州474150

出　　处：《兵器装备工程学报》2024年第7期158-166,共9页Journal of Ordnance Equipment Engineering

摘　　要：针对目前基于地磁场磁异探测在复杂侵彻工况下的引信磁异响应研究不足的情况,利用COMSOL有限元分析软件建立了弹体复杂工况下的侵彻模型,探究了弹体在平射或垂直正侵6层钢筋混凝土靶板、不同方向与不同距离的铁磁干扰作用、侵彻带有横梁结构钢筋混凝土靶板、偏转不同角度斜侵命中竖直墙体4种不同复杂工况条件下的侵彻过程引信磁异响应特征。经过仿真分析发现,不论是平射或是垂直正侵都可以得到清晰的穿靶特征信号,相对地磁方向偏转不同角度平射只会影响穿靶时磁信号的变化量而不影响穿靶特征的识别;放置于不同方向的铁磁干扰会对该轴与Z轴的磁异信号产生影响,放置距离超过3 m时影响微弱;弹体侵彻带横梁结构靶板,在横梁放置方向与Z轴方向上穿靶信号的变化量与脉宽均有所增加,不影响穿靶特征识别;弹体绕某轴发生偏转后带有攻角侵彻带竖直墙体钢筋混凝土靶板,攻角越小,侵彻竖直墙体及相邻2层靶板时产生的磁异信号变化越剧烈,攻角为10°时,失去穿靶特征。In view of the lack of research on the magnetic anomaly response of the fuze based on the geomagnetic field magnetic anomaly detection under complex penetration conditions,the penetration model of the projectile under complex conditions was established by using COMSOL finite element analysis software.The magnetic anomaly response characteristics of the fuze during the penetration process under four different complex working conditions were explored,including the projectile penetrating the 6-layer reinforced concrete target plate in the horizontal or vertical direction,the ferromagnetic interference effect in different directions and different distances,penetrating the reinforced concrete target plate with beam structure,and deflecting different angles obliquely penetrating the vertical wall.Through analysis,it is found that clear penetrating target characteristic signals can be obtained whether it is horizontal or vertical normal penetration.Different angles of horizontal deflection relative to the geomagnetic direction will only affect the variation of the magnetic signal when penetrating the target without affecting the recognition of the penetrating target characteristics;the ferromagnetic interference placed in different directions will affect the magnetic anomaly signal of the axis and the Z axis,and the influence is weak when the distance is more than 3 m.When the projectile penetrates the target plate with beam structure,the variation and pulse width of the target signal in the beam placement direction and the Z-axis direction are increased,which does not affect the identification of the target.After the projectile deflects around an axis,it penetrates the reinforced concrete target plate with a vertical wall with an angle of attack.The smaller the angle of attack,the more intense the change of the magnetic anomaly signal generated when penetrating the vertical wall and the adjacent two layers of the target plate.When the angle of attack is 10°,the penetration characteristics are lost.

关 键 词：侵彻 引信 地磁探测 复杂工况 计层 

分 类 号：TJ431.6[兵器科学与技术—火炮、自动武器与弹药工程]