Modeling and Verification of Electromagnetic-Thermal Coupling for Electromagnetic Track Launch Considering the Dynamic Conductivity

被引:0
|
作者
Yan, Rongge [1 ,2 ]
Jiang, Jinbo [1 ,2 ]
Yang, Qingxin [1 ,2 ]
An, Kang [1 ,2 ]
机构
[1] Hebei Univ Technol, State Key Lab Reliabil & Intelligence Elect Equipm, Tianjin 300401, Peoples R China
[2] Hebei Univ Technol, Key Lab Electromagnet Field & Elect Apparat Reliab, Tianjin 300401, Peoples R China
来源
APPLIED SCIENCES-BASEL | 2023年 / 13卷 / 15期
基金
中国国家自然科学基金;
关键词
electromagnetic track launch; electromagnetic-thermal coupling; armature and track dynamic conductivity; dynamic inductance gradient;
D O I
10.3390/app13158739
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
In order to solve the problems of insufficient precision of the armature velocity and inductance gradient in the process of finite element calculation of the electromagnetic track launcher, an improved dynamic conductivity electromagnetic-thermal coupling model is proposed to make the calculated results closer to the actual working condition. Firstly, the finite element analysis for the electromagnetic-thermal field is carried out. Then, considering the influence of dynamic conductivity on the armature velocity and inductance gradient, an improved dynamic conductivity electromagnetic-thermal coupling model based on finite element analysis is established, whose parameters are identified by the proposed PSO-GA hybrid algorithm. Moreover, the predicted values of armature velocity and inductance gradient are also obtained. Finally, the experimental platform of the electromagnetic track launcher is built to verify the improved model. By comparing the predicted value of the improved model with the experimental test value, it is found that the improved model can further reduce the calculated error from 5.79% to 1.18%, which provides a certain theoretical basis for the full true simulation of the electromagnetic track launch.
引用
收藏
页数:21
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