不同弹丸结构的单级感应线圈炮仿真研究

Simulation of Working Process of Single-stage Induction Coil-gun Considering Different Projectile’s Structures

不同的弹丸结构对同步感应线圈炮的发射性能有着重要的影响。通过分析储能脉冲电容器驱动的单级感应线圈炮的工作原理和电路模型,选择Ansoft有限元软件的2D瞬态求解器进行仿真研究。针对圆筒型和绕线型两种不同结构的弹丸,以驱动线圈与弹丸触发放电时的中心距为变量,以弹丸所能达到的最大速度为目标函数,对单级感应线圈炮进行了仿真分析。仿真结果表明,两种结构的弹丸都具有最佳的触发位置,且并不重合,绕线型弹丸出口速度较高,对比了两者的电流密度分布,为以后研究不同弹丸的工程应用提供了理论参考。

Different projectile’s structures have great influence on the function of single-stage induction coil-gun.Working process and circuit model,which describe single-stage induction coil-gun excited by the stored energy pulsed capacitor,is established.The single-stage inductance coil-gun is researched by simulation through the 2-Dimension transient solver in the Ansoft software.Regarding the maximal velocity of projectile as target function and regarding the space of the centers of the driving coil and projectile as variable when discharging,two type projectile’s structures of cylinder and winding are simulated.The simulation results indicate that each projectile has its own best discharge position,and this position is different,the winding projectile has a higher muzzle velocity,comparing the current density between the two types projectile,which provides the theoretical reference for future engineering practice.