强激光与粒子束Issue(2)：174-179,6.DOI:10.11884/HPLPB201628.025008
静止条件下轨道炮膛内磁场分布特性分析
Analysis of railgun in-bore magnetic field distribution at zero speed
摘要
Abstract
In order to analysis the electromagnetic railgun in-bore magnetic field distribution characteristic at zero speed,a two-dimensional railgun computational model is built.Based on the magnetic diffusion equation and Ampere’s law,the current density in each part of the rail and armature is obtained.Through the Biot and Savart’s law,the magnetic flux density of the in-vestigated point which locates in front of the armature is calculated,Based on the electromagnetic induction method,the magnetic field measurement experiments are carried out.The experimental values are in agreement with the calculation values.The results show that the magnitude of the magnetic field is determined by the current flowing through the armature and rails.To the investi-gated points in the central axis in front of the armature,the magnetic flux density decreases with the increase of the distance from the investigated point to armature,but the decay rate is gradually smaller.The results are helpful for the in-bore magnetic field shielding and intelligent ammunition design.关键词
电磁发射/电枢/电流密度/磁场Key words
electromagnetic launch/armature/current density/magnetic field分类
军事科技引用本文复制引用
殷强,张合,李豪杰,史云雷..静止条件下轨道炮膛内磁场分布特性分析[J].强激光与粒子束,2016,(2):174-179,6.基金项目
装备预研基金项目(9140C300106150C30001) （9140C300106150C30001）
