星载螺旋线行波管螺旋线过盈装配技术研究  

Simulation of Interference-Fit of Helix in Assembling Space Helix Traveling Wave Tube

作　　者：李鑫伟[1,2] 王小宁[1,2] 俞世吉[1] 苏小保[1] 邢艳荣[1] 方有维[1] 孟鸣凤[1] 

机构地区：[1]中国科学院电子学研究所,中国科学院高功率微波源与技术重点实验室,北京100190 [2]中国科学院大学,北京100049

出　　处：《真空科学与技术学报》2016年第9期1017-1023,共7页Chinese Journal of Vacuum Science and Technology

基　　金：国家高技术研究发展计划(863计划)资助的课题(No.2013AA8035040C)

摘　　要：螺旋线行波管具有宽频带、高效率、高增益的优良特性,在卫星通信及电子对抗中得到了广泛的应用。螺旋线行波管的慢波结构由螺旋线、夹持杆、管壳及周期永磁系统组成。通常,螺旋线通过夹持杆过盈装配在管壳中,在装配时,由于元件加工误差的随机性,若没有准确的理论指导,很可能造成管壳因过量挤压而产生屈曲形变。本文利用ANSYS有限元软件对某星载螺旋线行波管螺旋线-夹持杆-管壳过盈装配技术开展了研究,通过理论分析和模拟计算,给出了该螺旋线行波管在螺旋线-夹持杆-管壳冷挤压装配时的挤压安全范围及成功概率,以指导实际工程操作。此外,又讨论了管壳长度和厚度对安全装配的影响,为相近型号的螺旋线行波管装配操作提供了参考。The interference fit of the three components of the slow wave structure of the space-borne helix traveling wave tube,including the clamping rods,tube housing and periodic permanent magnet unit,was mathematically modeled,theoretically analyzed,and numerically simulated in finite element method with software Inventor and ANSYS. The impact of the mould displacement（ extrusion） on the stress,strain,tube＇s deformation,and buckling deformation originated from random fabrication error,was investigated. The calculated and simulated results provide the security scope and success probability of the interference fit. In addition,dependence of the interference fit on the length and thickness of the tube housing was also simulated. The interference fit was found to strongly depend on the thickness,but weakly on the length of the tube; the thinner the tube,the weaker the yield strength,and the higher success probability.

关 键 词：螺旋线 夹持杆 管壳 过盈装配 ANSYS 

分 类 号：O462.1[理学—电子物理学]