电磁成形磁场力的研究

RESEARCH ON THE MAGNETIC PRESSURE IN ELECTROMAGNETIC FORMING

电磁成形属于高能率成形 ,磁场力分析是其理论分析的基础 ,研究结果直接用于工件变形分析、确定电磁成形的工艺参数。本文通过分析电磁胀形的特点提出磁场力求解的归一化 ,阐述了电磁胀形磁场力求解的几种方法和各自特点。不同求解方法的对比表明 ,有限元方法求解磁场力最接近胀形实测情况。随着大型有限元分析软件的应用 。

Electromagnetic forming is a kind of high energy rate forming process The analysis of magnetic pressure is the foundation of theoretic calculation and the results can be used to determine the deformation of workpiece and technical parameters in electromagnetic forming By studying the characteristics of electromagnetic expansion,the normalization of magnetic pressure solution is put forward At the same time,several methods of magnetic pressure solution and their characteristics are expounded The comparison of these methods shows that the FEM result is the closest one to the actual measurement With the application of large\|scale FEM software,the research on magnetic pressure in electromagnetic forming will start a brand\|new stage