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.
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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2020, Vol. 35 
