姚金明,张腾飞,韩辉,杨艳,吴巨爱

• 1:南京邮电大学自动化学院人工智能学院
• 2:郑州市管城回族区银莺路小学

摘要(Abstract)：

在“电磁发射理论与技术”课程教学中，电枢/轨道接触理论涉及结构力学、电磁学、热学等多场耦合过程较为抽象且复杂。电磁发射试验依赖昂贵的脉冲电源及发射材料，并且脉冲电源的操作及安全控制危险系数较高，以致实验教学难以开展。本文针对课程现存的这些教学难点，介绍了COMSOL Multiphysic在电磁发射枢轨接触界面多场耦合教学中的应用；以发射初期枢轨界面电流分布为教学案例，通过软件的应用使学生掌握电枢/轨道手动建模、接触压力过盈计算、结构力学模块和电磁模块耦合设置、2D/3D接触界面压力和电流分布查看等教学内容。同理论教学相比，基于COMSOL Multiphysic的实验教学环节可有效地将枢轨接触界面多物理场耦合过程形象化、案例化，使得“电磁发射理论与技术”课程教学更具说服力，提高课程的教学效果和专业水平。研究成果有助于提升学生逻辑思考及主动探究能力，为在物理学教学中引入仿真软件使理论教学和可视化仿真有机结合提供了有益的借鉴。

关键词(KeyWords)： 电磁发射;接触界面;多物理场耦合;实验课程;COMSOL

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(52207009);; 江苏省学位与研究生教育教学改革课题(JGKT24＿B013);; 南京邮电大学教学改革项目(JG00521JX40)

作者(Author): 姚金明,张腾飞,韩辉,杨艳,吴巨爱

参考文献(References)：

• [1] 马伟明，鲁军勇，李湘平.电磁发射超高速一体化弹丸[J].国防科技大学学报，2019,41(4):1-4.MA W M,LU J Y,LI X P.Electromagnetic launch hypervelocity integrated projecti[J].Journal of National University of Defense Technology,2019,41(4):1-4.(in Chinese)
• [2] 马伟明，鲁军勇.电磁发射技术的研究现状与挑战[J].电工技术学报，2023,38(15):3943-3959.MA W M,LU J Y.Research progress and challenges of electromagnetic launch technology[J].Transactions of China Electrotechnical Society,2023,38(15):3943-3959.(in Chinese)
• [3] 胡鑫凯，鲁军勇，李白，等.瞬态条件下电磁轨道发射装置绝缘体热损伤分析[J].电工技术学报，2023,38(21):5673-5681.HU X K,LU J Y,LI B,et al.Thermal damage analysis of insulator in electromagnetic rail launcher under transient conditions[J].Transactions of China Electrotechnical Society,2023,38(21):5673-5681.(in Chinese)
• [4] 冯登.电枢轨道高速滑动电接触界面热流体动力润滑研究[D].武汉：华中科技大学，2014FENG D.Thermohydrodynamic lubrication research of armature-rail high speed sliding electrical contact interface[D].Wuhan:Huazhong University of Science and Technology,2014.(in Chinese)
• [5] 张嘉炜，鲁军勇，谭赛，等.考虑初始接触压力的滑动电接触界面磁扩散模型[J].电工技术学报，2022,37(2):488-495.ZHANG J W,LU J Y,TAN S,et al.A magnetic diffusion model of electromagnetic launcher considering initial contact pressure[J].Transactions of China Electrotechnical Society,2022,37(2):488-495.(in Chinese)
• [6] 汤亮亮.电磁发射中枢轨接触界面金属液化层特性的实验与理论研究[D].武汉：华中科技大学，2015.TANG L L.Experimental and theoretical study on liquid metal film characteristic of armature/rail contact interface in an electromagnetic launching[D].Wuhan:Huazhong University of Science and Technology,2015.(in Chinese)
• [7] 陈允，徐伟东，袁伟群，等.电磁发射中铝电枢与不同材料导轨间的滑动电接触特性[J].高电压技术，2013,39(4):937-942.CHEN Y,XU W D,YUAN W Q,et al.Sliding electrical contacts between aluminum armature and different material rails in railgun[J].High Voltage Engineering,2013,39(4):937-942.(in Chinese)
• [8] 李鹤，雷彬，李治源，等.轨道炮轨道刨削形成及相关参数分析[J].机械设计与研究，2013,29(4):99-102.LI H,LEI B,LI Z Y,et al.Gouge formation on rail of railgun and its parameters research[J].Machine Design and Research,2013,29(4):99-102.(in Chinese)
• [9] 陈立学，何俊佳，夏胜国，等.电磁轨道炮轨道电阻率和轨道高度对电流上升沿阶段电枢边沿熔蚀的影响[J].高电压技术，2014,40(4):1071-1076.CHEN L X,HE J J,XIA S G,et al.Influence of rail resistivity and rail height on armature edge erosion at current rampup in solid armature railgun[J].High Voltage Engineering,2014,40(4):1071-1076.(in Chinese)
• [10] 毛保全，张天意，白向华，等.电磁轨道炮抗烧蚀枢轨结构设计[J].兵器装备工程学报，2020,41(3):67-71.MAO B Q,ZHANG T Y,BAI X H,et al.Design of anti-ablation armature structure for electromagnetic rail gun[J].Journal of Ordnance Equipment Engineering,2020,41(3):67-71.(in Chinese)
• [11] 宋清卿，王晓杰.COMSOL Multiphysics仿真软件在 PT教学中的应用[J].物理与工程，2023,33(6):38-47.SONG Q Q,WANG X J.Application of COMSOL Multiphysics simulation software in Physicists' Tournament teaching[J].Physics and Engineering,2023,33(6):38-47.(in Chinese)
• [12] 裴畅贵，刘国志，金寅翔，等.基于 COMSOL 的电磁发射一体化弹丸动力学分析[J].火炮发射与控制学报，2024,45(1):104-112.PEI C G,LIU G Z,JIN Y X,et al.Dynamic analysis of electromagnetically launched integrated projectiles based on COMSOL[J].Journal of Gun Launch & Control,2024,45(1):104-112.(in Chinese)
• [13] 张驰.基于COMSOL的磁流体加速器三维建模与仿真分析[D].湘潭：湘潭大学，2022.ZHANG C.Three-dimensional modeling and simulation analysis of MHD accelerator based on COMSOL[D].Xiangtan:Xiangtan University,2022.(in Chinese)
• [14] 姚金明，傅强.大电流高速滑动电接触界面热量分配过程[J/OL].电工技术学报，2024.https://doi.org/10.19595/j.cnki.1000-6753.tces.231136YAO J M,FU Q.Heat partition process at sliding electrical contact interfaces with high-speed and large current[J/OL].Transactions of China Electrotechnical Society,2024.https://doi.org/10.19595/j.cnki.1000-6753.tces.231136 (in Chinese)