Design of Armature Interference Structure of New Quadrupole Track Electromagnetic Launcher

摘要

How to provide pre-tightening force for armature and how to achieve interference fit between armature and track are the basic and key difficult problems in the research process of electromagnetic track launcher,which directly affect the contact characteristics between armature and track,and have important research significance.Firstly,according to the armature arm structure of C-type armature of railgun,the interference structure of armature of new quadrupole track electromagnetic launcher is designed.Then,in the simulation process,two kinds of interference structures are simulated and analyzed by the loading assembly method.Finally,the final structure of armature interference is determined based on the four performance indicators of stress,pressure contact efficiency,stress and pressure distribution uniformity to quantify the contact characteristics.The results show that scheme 2 is more suitable for armature of new quadrupole track electromagnetic launcher,and has the best performance index when the interference is 0.6 mm.