高压物理学报2016，Vol.30Issue(6)：511-516,6.DOI:10.11858/gywlxb.2016.06.012
电磁轨道炮接触热时空分布特性分析
Characteristics of Temporal and Spatial Distribution of Railgun Contact Heat
王志恒 1万敏 1李小将2
作者信息
- 1. 装备学院研究生管理大队，北京 101416
- 2. 装备学院航天装备系，北京 101416
- 折叠
摘要
Abstract
A good understanding of the temporal and spatial distribution characteristics of the railgun contact heat is an important basis upon which to suppress armature melting,design the rails cooling system,and control the thermal management.In this work,based on the calculation models of the contact pressure and contact resistance of the armature and rail,the calculation model of the railgun contact heat temporal and spatial distribution was built,the temporal and spatial distribution of the contact heat was simulated,and the distributional characteristics were analyzed.Aiming at the problem of the relative concentration of the contact heat in the initial stage of the armature movement,the effect of the armature pre-acceleration on the temporal and spatial distribution of the contact heat was examined.The simulation and analytical results show that the contact heat originates mainly from the current's Joule heat,the curves of whose power and driving current have great similarity;most of the contact heat is conducted to the rails in the initial stage of the armature movement,which is the primary cause for the rail erosion;both the contact heat conducted to the unit length rail in the initial stage and that accumulated in the armature during the launching process decrease with the increase of the armature initial velocity.关键词
电磁轨道炮/电枢/轨道/滑动电接触/焦耳热/摩擦热Key words
railgun/armature/rails/sliding electrical contact/Joule heat/friction heat分类
数理科学引用本文复制引用
王志恒,万敏,李小将..电磁轨道炮接触热时空分布特性分析[J].高压物理学报,2016,30(6):511-516,6.
