电工技术学报  2020, Vol. 35 Issue (18): 3802-3810    DOI: 10.19595/j.cnki.1000-6753.tces.191029
电工理论与新技术 |
电磁轨道发射器电磁结构耦合动态发射过程数值模拟
杜佩佩, 鲁军勇, 冯军红, 谭赛, 李开, 李湘平
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 430074
Numerical Simulation of Dynamic Launching Process of Electromagnetic Rail Launcher with Electromagnetic and Structural Coupling
Du Peipei, Lu Junyong, Feng Junhong, Tan Sai, Li Kai, Li Xiangping
National Key Laboratory of Science and Technology on Vessel Integrated Power SystemNaval University of Engineering Wuhan 430074 China
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摘要 电磁轨道发射器动态发射过程数值模拟是研究内弹道的重要理论基础,该文以简化的电磁轨道发射器为研究对象,建立电磁轨道发射器瞬态电磁场数值求解模型,得到电磁轨道发射器动态发射过程中电枢和轨道三维瞬态电磁力;基于传统电磁轨道发射器动力学响应模型,提出两端无约束模型优化方案和轨道弹性支撑体结构刚度各向异性概念,建立弹性支撑各向异性约束模型;在此基础上,建立考虑弹性支撑刚度各向异性的电磁、结构耦合的内弹道仿真模型;研究弹性支撑刚度各向异性对轨道动力学响应影响规律,正向刚度越小,轨道正向变形越大,提出电磁轨道发射器正向约束临界刚度,建立临界刚度计算模型,为电磁轨道发射器设计提供理论依据。
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杜佩佩
鲁军勇
冯军红
谭赛
李开
李湘平
关键词 电磁轨道发射器电磁场瞬态动力学弹性支撑刚度电磁结构耦合    
Abstract:Numerical simulation of dynamic launch process of electromagnetic rail launcher is an important theoretical basis for studying interior ballistics. In this paper, taking the simplified electromagnetic rail launcher as the research object, the numerical solution model of transient electromagnetic field is established. The three-dimensional transient electromagnetic force of armature and rail in the dynamic launching process is then obtained. Based on the traditional dynamic response model of electromagnetic rail launcher, the optimization scheme of unconstrained model at both ends and the concept of stiffness anisotropy of elastic support structure are proposed, and the anisotropic constraint model of elastic support is established. On this basis, the electromagnetic and structural coupling interior ballistic simulation model considering the anisotropy of elastic support stiffness is established. The influence of anisotropy of elastic support stiffness on rail dynamic response is studied. The smaller the forward stiffness is, the larger the forward deformation of rail is, and the greater the influence on armature motion is. The forward restraint critical stiffness of the electromagnetic rail launcher is proposed, and the calculation model of the critical stiffness is established, which provides a theoretical basis for the design of the electromagnetic rail launcher.
Key wordsElectromagnetic rail launcher    electromagnetic field    transient dynamic    elastic support stiffness    electromagnetic structure coupling   
收稿日期: 2019-08-14     
PACS: TM359.4  
基金资助:国家自然科学基金(51522706、51877214、51607187)和海军工程大学博士创新基金资助项目
通讯作者: 鲁军勇 男,1978年生,教授,博士生导师,研究方向为电磁发射混合储能技术、直线电机设计等。E-mail: jylu@xinhuanet.com   
作者简介: 杜佩佩 男,1991年生,博士研究生,研究方向为电磁发射内弹道多物理场耦合数值仿真等。E-mail: dp911120@163.com
引用本文:   
杜佩佩, 鲁军勇, 冯军红, 谭赛, 李开, 李湘平. 电磁轨道发射器电磁结构耦合动态发射过程数值模拟[J]. 电工技术学报, 2020, 35(18): 3802-3810. Du Peipei, Lu Junyong, Feng Junhong, Tan Sai, Li Kai, Li Xiangping. Numerical Simulation of Dynamic Launching Process of Electromagnetic Rail Launcher with Electromagnetic and Structural Coupling. Transactions of China Electrotechnical Society, 2020, 35(18): 3802-3810.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.191029          https://dgjsxb.ces-transaction.com/CN/Y2020/V35/I18/3802