摘要
为了提高机动性,现代迫击炮向车载化方向不断发展,研制紧凑型、低后坐力迫击炮制退机取代笨重座钣结构成为轻型高机动迫击炮发展的趋势。针对该问题,提出了一种迫击炮同心式电涡流制退机,建立了发射载荷下同心式电涡流制退机电磁有限元模型,分析了电涡流制退机阻尼性能、气隙磁场与涡流场特性,研究了不同结构参数下电涡流制退机阻尼性能。研制了同心式电涡流制退机发射试验装置,并进行射击试验,在60 g装药下最大后坐加速度为377 g,最大后坐速度为12.33 m/s,后坐位移为215 mm,后坐位移的仿真结果与试验值相比误差5.11%,验证了仿真模型的准确性。研究结果表明:减小复合内筒与磁钢间工作气隙有利于增大磁场强度;复合内筒厚度超过1.5 mm,电流密度增益效果不明显,并将导致阻尼性能下降。
To improve mobility,modern mortars are constantly developing in the direction of being vehicle-mounted,and the development of a compact,low-recoil mechanism for mortar to replace the cumbersome base plate metal structure has become a new trend in the development of lightweight and high-mobility mortars.To address this issue,a mortar concentric eddy current recoil mechanism was proposed,and an electromagnetic finite element model of concentric eddy current recoil mechanism was established under the firing load,damping performance,air gap magnetic field with eddy current field characteristics of the eddy current recoil mechanism analyzed.The damping performance of the eddy current recoil mechanism was studied under different structural parameters.The concentric eddy current recoil mechanism firing test device was developed and firing tests were carried out.The maximum recoil acceleration was[JP3]377 g with a 60 g charge,and the maximum recoil velocity is 12.33 m/s with a 215 mm recoil displacement.Simulation results of the recoil displacement have an error of 5.11%compared with the experimental value,which verified the accuracy of the simulation model.The results show that reducing the working air gap between the composite inner cylinder and the magnet is conducive to increasing the magnetic field strength.With the thickness of the composite inner cylinder being more than 1.5 mm,the effect of current density gain is not obvious and leads to a decrease in the damping performance.
作者
王彪彪
刘宁
沈艳萍
邱鑫涛
孙明亮
WANG Biaobiao;LIU Ning;SHEN Yanping;QIU Xintao;SUN Mingliang(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,Jiangsu,China)
出处
《火炮发射与控制学报》
北大核心
2024年第4期107-114,共8页
Journal of Gun Launch & Control
关键词
同心式电涡流制退机
发射载荷
反后坐装置
电磁阻尼力
concentric eddy current damper
launching load
recoil mechanism
electromagnetic damping force
作者简介
王彪彪(1997-),男,硕士研究生;通信作者:刘宁(1980-),男,博士,副教授。
