考虑电枢运动下的电磁轨道发射装置数值计算方法  

Numerical analysis method of electromagnetic rail launchers with motion

作　　者：谭赛[1] 鲁军勇[1] 姜涛[2] 张晓[1] 龙鑫林[1] TAN Sai LU Jun-yong JIANG Tao ZHANG Xiao LONG Xin-lin(National Key .Laboratory for Vessel Integrated Power System Technology, Naval Univ. of Engineering, Wuhan 430033, China Office of Research ＆ Development, Naval Univ. of Engineering, Wuhan 430033, 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,武汉430033 [2]海军工程大学科研部,武汉430033

出　　处：《海军工程大学学报》2016年第5期46-50,共5页Journal of Naval University of Engineering

基　　金：国家自然科学基金资助项目(51407191;51307176);国家973计划资助项目(613262)

摘　　要：对于滑动电接触问题,以矢量磁位A和时间积分标量电位V为变量,采用棱边单元法,选择v·A=0作为树规范,可在A和V均连续的情况下,同时满足磁场强度H、磁感应强度B、电场强度E和电流密度J的分界面连续条件。采用罚函数保证轨道电流流入端口的边界条件,采用自由度平移法处理运动问题保证求解区域不变,最终建立了电磁轨道发射装置的二维有限元数值计算模型。模型计算结果与D.Rodge的模型计算值的对比分析结果验证了该模型的正确性。For electrical sliding problems,edge elements can satisfy the interface condition of magnetic field intensity H,magnetic flux density B,electric field strength Eand current density Jautomatically with continuous time integrated electric scalar potential V and magnetic vector potential A,when the v·A=0is chosen as the tree-gauge.Shifted degree of freedoms（DOFs）method is used to deal with motion.The governing equations are derived by penalty method to keep zero tangential component of J on current inlet surface of rail.By those methods,the finite element model with motion considered is derived by the edge element method which keeps the invariability of computational domains.The finite element model of electromagnetic rail launchers in two dimensional is established.The computational results of the model are compared and analyzed with the D.Rodge′s models,and the comparison results verify the method.The method is aneffective technological means for electromagnetic rail launcher optimization design.

关 键 词：电磁轨道发射装置 滑动电接触 棱边单元 罚函数法 自由度平移 

分 类 号：TM315[电气工程—电机]