• CN:11-2187/TH
  • ISSN:0577-6686

›› 2005, Vol. 41 ›› Issue (4): 185-188.

• 论文 • 上一篇    下一篇

管坯电磁胀形磁场特性及磁压力分布

赵志衡;李春峰;李建辉;邓将华   

  1. 哈尔滨工业大学电气工程及自动化学院;哈尔滨工业大学材料科学与工程学院
  • 发布日期:2005-04-15

MAGNETIC FIELD CHARACTERISTIC AND MAGNETIC PRESSURE DISTRIBUTION IN TUBE ELECTROMANETIC EXPANSION

Zhao Zhiheng;Li Chunfeng;Li Jianhui;Deng Jianghua   

  1. School of Electrical Engineering and Automation,Harbin Institute of Technology School of Materials Science and Engineering, Harbin Institute of Technology
  • Published:2005-04-15

摘要: 电磁成形理论涉及电磁学与塑性动力学,磁压力研究是其理论研究的基本问题之一。采用有限元法是提高磁压力求解精度的有效途径,而确定求解区域及其边界上的磁场特性又是有限元方法的关键问题。采用解析方法求解管坯与线圈同轴放置时的磁场,确定了有限元的求解区域及该求解区域边界上的磁场特性。在此基础上通过有限元计算得到了螺线管线圈和阶梯形线圈胀形时的磁场场景和磁压力分布,并通过管坯自由胀形试验验证了磁压力分布。

关键词: 磁场特性, 磁压力分布, 电磁胀形, 有限元法

Abstract: The theory research on electromagnetic forming is related to electromagnetics and plasticity dynamics. Of all the problems, magnetic pressure calculation is the basic one. FEM (Finite element method) is an effective method in enhancing the accuracy of magnetic pressure calculation. But for the FEM, how to confirm the solving area and magnetic field charac- teristic on the boundary is the key problem. The symmetry of magnetic field characteristic in the condition that workpiece and forming coil are placed coaxially is calculated by analysis. According to the result of magnetic field characteristic, the solving area of FEM is decided and the magnetic field characteristic on the boundary is presented. Then, the magnetic field and magnetic pressure distribution of solenoid coil and echelon coil are simulated by means of FEM and the magnetic pressure distribution is verified by electromagnetic bulging experiment.

Key words: Electromagnetic bulging, Finite element method, Magnetic field characteristic, Magnetic pressure distribution

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