Parametric Design of Railgun Armature Based on Functional Zoning

As the key part of electromagnetic railgun, the geometry structure of armature deeply affect the lunch performance of railgun during the lunch progress. In the launching process of electromagnetic railgun, strong current flows on the contact surface between armature and track, and local high temperature will lead to melting of metal materials, thus affecting the contact performance. Thus reasonable structure of armature should be chosen for the optimization of electromagnetic, heat and stress characteristic to improve anti-ablation. Based on the structure character of C-shaped armature in this paper, parameter model is established, and the ANSYS software is used to investigate the current density distribution law of armature and the mechanical character influence of armature with the changing of geometry parameter of structure area. Moreover the initial interference of the armature and material selection were analyzed. The result of this paper have important reference value for the research and design for armature.