Coupling analysis on armature-rail contact in railgun

摘要：

　　In the process of electromagnetic launch(EML), armature-rail contact is affected by the start-up contact.On account that the location of pulse current flowing into armature is determined by the position of start-up contact, the distribution of current and electromagnetic force in armature is affected by start-up contact.In this paper, the distribution characteristics of current and electromagnetic force in armature is analyzed.The electromagnetic force in the electromagnetic analysis is transferred to the structural analysis via the method of electromagnetic-structure coupling analysis, and the distribution of armature-rail contact pressure is acquired.Some armature contact parameters and the concept of armature contact efficiency are proposed.The relationship between contact parameters and contact efficiency of armature arm with different lengths is acquired by a series simulations.

关键词： Start-up contact pressure Electromagnetic force(EMF) Coupling analysis Contact efficiency Armature arm

作者: Hai-yu MIAO Shao-wei LIU Ming LIU Qing-rong CHEN Meng-yang CUI

作者单位: Air Force Enginering Universty, Xian, Shaanxi, China

会议类型: 国际会议

会议名称: 2018 International Conference on Defence Technology (2018国际防务技术会议)

会议地点: 北京

会议语种:英文

页码: 61-64

在线出版日期: 2018-10-21（万方平台首次上网日期，不代表论文的发表时间）