基于精细建模下单级线圈发射装置的堵驻分析  

Simulation Analysis of Single-Stage Coil Launcher at Blocked Condition Based on Fine FEM Modeling

作　　者：贺亚男 关晓存[1] 孟庆云[1] 管少华[1] 郭灯华[1] 吴彪 HE Yanan;GUAN Xiaocun;MENG Qingyun;GUAN Shaohua;GUO Denghua;WU Biao(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Navy University of Engineering, Wuhan 430033, Hubei, China)

机构地区：[1]海军工程大学舰船综合电力技术国防科技重点实验室,湖北武汉430033

出　　处：《火炮发射与控制学报》2021年第2期1-8,共8页Journal of Gun Launch & Control

基　　金：国家自然科学基金项目(51777212)。

摘　　要：为分析线圈内部的应力变形状况,根据线圈绕组的不同形态,建立了两种极端情况模型简化模型和匝间局部折弯模型。通过分析电枢在堵驻工况下简化模型线圈内部应力变形,发现线圈内部与电枢距离最近的导线绕组存在应力和径向位移最大,得出通过限制内层位移可减少整体变形的结论。通过分析匝间局部折弯模型,得出了线圈内部匝数间的迅速过渡及输入输出端口处会导致线圈绕组应力集中,会对电枢产生较大侧向干扰力。绕组平滑过渡可减少层内过渡应力集中,但无法解决层间过渡区域应力集中的结论。针对上述问题,又建立了第3种通过铜管切割、焊接而成的螺线管线圈绕组优化模型,不仅可以解决在过渡时自身应力集中问题,同时去除了加工残余应力,可优化材料配置,提升加工精度和强度,有利于增强驱动对电枢的正向推力,减少对电枢的侧向干扰。In order to analyze the stress and deformation conditions inside the synchronous induction coils,according to the different forms of coil windings,two extreme models are established:the simplified model and the local bending model between turns.By analyzing the internal stress and deformation of the simplified model coil under the blocking condition of the armature,the stress and radial displacement of the wire windings with the closest distance to the armature are the largest inside the coil.It is concluded that the overall deformation can be reduced by limiting the inner displacement.Through the analysis of the local bending model between the turns,it is concluded that the rapid transitions between the internal turns of the coil and the input and output ports cause the stress concentration of the coil winding,which will produce a large lateral interference force on the armature.The smooth transition of the winding can reduce the transition stress concentration in the layer,but it cannot solve the problem of the stress concentration in the transition region between layers.In response to the above problems,a third type of solenoid coil winding optimization model made by copper tube cutting and welding was established,which not only solves the problem of stress concentration during transition,but also removes processing residual stress and optimizes material configuration.Improving the proce-ssing accuracy and strength is beneficial to increasing the positive thrust of the drive on the armature and reducing the lateral interference to the armature.

关 键 词：有限元仿真 线圈绕组 线圈发射装置 电磁耦合分析 结构优化分析 

分 类 号：TM303[电气工程—电机]