侵彻过程中弹引系统的冲击传递特性研究  

Study on Impact Transfer Characteristics of Projectile System During Penetration

作　　者：张冬梅[1] 高世桥[2] 李世中[1] ZHANG Dongmei;GAO Shiqiao;LI Shizhong(School of Mechanical and Electrical Engineering, North University of China, Shanxi 030051, China;School of Mechanical and Electrical Engineering, Beijing Institute of Technology, Beijing 100081, China)

机构地区：[1]中北大学机电工程学院,太原030051 [2]北京理工大学机电学院,北京100081

出　　处：《兵器装备工程学报》2020年第12期27-34,共8页Journal of Ordnance Equipment Engineering

基　　金：山西省青年基金项目(201901D211229);中北大学2018年校科研基金项目(11044818)。

摘　　要：针对侵彻弹内部器件失效问题,利用ANSYS/LS-DYNA软件开展了不同目标侵彻过程的数值模拟,得到了侵彻过程中弹引系统各部件的动态响应。分析仿真结果发现:在弹引系统侵彻靶板的过程中,弹丸头部承受的冲击载荷要大于弹丸尾部承受的冲击载荷;对于刚性连接,如螺纹连接或压接,由于界面碰撞等作用导致内部零件承受的冲击载荷增大;通过橡胶垫片、灌封胶等的保护,内部的电路板受到的冲击载荷明显减小;在侵彻多层靶板过程中,当弹丸的穿靶频率与侵彻单层靶板的脉冲频率接近时,穿靶过程中产生的峰值不明显,产生了信号粘连现象;变形后的橡胶垫在充分恢复后能够有效保护内部器件,因此应该根据层间距调整橡胶垫片的尺寸。In view of the failure of the internal components of the projectile,the numerical simulation of projectile penetrating into different targets was carried out by using ANSYS/LS-DYNA software.Through the simulation,the dynamic response of each part of the projectile system was obtained during penetration.It was shown that in the process of the projectile system penetrating into the target plate,the impact load on the head of the projectile was greater than that on the tail.The impact load of internal devices were slower than projectile due to the interface collision.For rigid connections,such as threaded connection or crimping,the impact load of internal parts was increased due to the interface collision.In the process of penetrating multi-layer target,if the penetration frequency of projectile was close to the pulse frequency of penetrating single-layer target,the peak value was no longer obvious because of the signal adhesion.The deformed rubber pad could effectively protected the internal components after full recovery.Therefore,the size of rubber gasket should be adjusted according to the layer spacing.

关 键 词：侵彻 弹引系统 冲击传递 过载 数值仿真 

分 类 号：TJ43[兵器科学与技术—火炮、自动武器与弹药工程]