电磁轨道发射系统后坐力研究及反后坐装置设计

Study of Recoil Force in Electromagnetic Railgun and Design of Recoil Mechanism

电磁轨道发射系统运行时,受到了极其复杂的载荷作用,包括电磁力、电枢及弹丸的摩擦与切削热和高温梯度等产生的应力等,这些力随着电枢发射等量地作用于发射系统基座上。针对大能量电磁轨道发射试验系统的后坐力现象,建立发射系统后坐力研究模型,运用ANSYS软件仿真计算了各部件的受力状况,得出发射系统后坐力构成及状态,在此基础上建立基于阻尼液孔缩效应耗能和摩擦耗能原理的驻退复进反后坐力计算模型。根据试验要求展开计算,得到设定条件下的电磁轨道发射试验系统反后坐力装置的结构及具体参数,并据此开展研制,实现了新型阻尼反后坐装置,并应用于大能量电磁轨道发射试验系统。

During the launch process of electromagnetic railgun,the launcher is subjected to the effects of complex loads,and the forces include the electromagnetic force,the friction and cutting heat of armature,the stress caused by high temperature gradient.The forces act on the pedestal of launcher system when the armature is shouted.Aiming at the recoil phenomenon for high-energy electromagnetic rail launch system,the model was established,and the stress-conditions of each component were calculated by ANSYS simulation software.The component and status of the recoil were obtained.Based on the energy dissipation of damping-liquid hole-shrinkage effect and the energy dissipation principle of friction,the calculation model of recoil force was established. According to the test requirements,new recoil mechanism was developed,and it can be applied in high-energy electromagnetic rail launch test system.