电磁发射拦截系统发射装置工作过程仿真研究

Dynamic Simulation of Working Process of the Electromagnetic Launcher in the Electromagnetic Launching Interception System

利用Maxwell 2D瞬态求解器对电磁发射拦截系统发射装置的工作过程进行了有限元仿真,得到了发射装置工作过程中放电回路的电流、拦截弹受到的电磁力、速度以及位移等参数随时间变化的规律。结果表明:拦截弹的加速时间主要集中在放电电流的第1个半周期内,因此,可适当延长放电周期,以增加拦截弹的加速时间;拦截弹与发射线圈的距离是影响拦截弹发射速度的主要因素,为了提高发射效率,在设计发射装置时,应尽可能地减小发射线圈与拦截弹间绝缘材料的厚度。

The dynamic working process of the electromagnetic launcher is researched by simulation through the Maxwell 2D transient solver in the ansoftware.The current wave of the discharge circuit vs.time and the electromagnetic force,the speed and the displacement vs.time for the interception projectile are achieved.The simulation results indicate that the main acceleration happens during the first half-period of discharge current,and the dischargeing period should be extended appropriately for purpose of increasing acceleration time of the interception projectile.The space between interception projectile and launch coil has great influence on velocity of the interception projectile.So in order to improve the launching efficiency,the thickness of insulator between the launching coil and the interception projectile should be decreased when designing the launcher.