炮膛间距对枢轨初始接触状态的影响分析  

Analysis of the Influence of Gun Bore Spacing on the Initial Contact Performance Between Armature and Rail

作　　者：曹斌[1] 裴朋超 张昕楠 曹永杰[1] 葛霞[1] CAO Bin;PEI Pengchao;ZHANG Xinnan;CAO Yongjie;GE Xia(Northwest Institute of Mechanical&Electrical Engineering,Xianyang 712099,Shaanxi,China)

机构地区：[1]西北机电工程研究所,陕西咸阳712099

出　　处：《火炮发射与控制学报》2024年第3期1-5,共5页Journal of Gun Launch & Control

基　　金：国家自然科学基金资助项目(6141B010409)。

摘　　要：电磁轨道炮炮膛间距直接影响到发射过程中枢轨滑动电接触状态,尤其是起始段炮膛间距变化对电枢烧蚀具有较大影响,将炮膛等效成呈一定角度张开的两条直线,利用角平分线相关特性开展炮膛间距测量,根据炮膛间距实测数据,结合工程实际分析起始段炮膛变化形态并建立对应形态下的枢轨初始接触模型,分析了炮膛装配精度对枢轨初始接触性能的影响,分析结果表明起始段炮膛间距是造成电枢静态受力不均、枢轨接触面积及接触力非对称分布的主要原因,通过不同炮膛变化形态的静态接触试验,进一步验证了理论分析结果。通过分析炮膛间距对枢轨初始接触的影响作用,为枢轨匹配性设计提供理论依据。During electromagnetic launching process,the spacing of the railgun bore directly affects the sliding electric contact state between the armature and rail,especially at the initial stage,which has a great impact on the armature erosion.The gun bore is equivalent to two straight lines that open at a certain angle,and gun bore spacing measurement is carried out using angular bisector characteristics.Combining measured data of bore spacing with the engineering practice,the shape change of the bore at the initial stage is analyzed,the initial contact model of the armature and rail under the corresponding shape is established,and the influence of the bore assembly accuracy on the initial contact performance examined.Analysis results show that initial bore spacing is the main reason for uneven static stress and asymmetric distribution of contact area and force between rail and armature.The theoretical analysis results are further verified by the static contact tests of different bore shapes.The research can be used to provide theoretical basis for the matching design of armature and rail by analyzing the effect of bore spacing of the gun bore on the initial contact between armature and rail.

关 键 词：轨道炮 滑动电接触 炮膛间距 枢轨初始接触 

分 类 号：TJ303[兵器科学与技术—火炮、自动武器与弹药工程]