Numerical and Experimental Investigation of the Impact of the Electromagnetic Properties of the Die Materials in Electromagnetic Forming of Thin Sheet Metal
Numerical and Experimental Investigation of the Impact of the Electromagnetic Properties of the Die Materials in Electromagnetic Forming of Thin Sheet Metal
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DOI：
10.3390/jmmp5010018
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发表时间：
2021-03-01
影响因子：
3.2
通讯作者：
Kuhfuss, Bernd
中科院分区：
文献类型：
--
作者：
Beckschwarte, Bjoern;Langstaedtler, Lasse;Kuhfuss, Bernd
在薄板的电磁成形中，模具位于电磁波的有效范围内。相应地，电流不仅在金属板中感应，而且在模具中感应。与工件中的电流一样，模具中的电流也与电磁波相互作用，导致洛伦兹力和电磁场的变化。为了研究不同的电磁模具性能对比电阻和相对磁导率的影响，进行了电磁仿真。确定了金属板中所产生的成形力的变化。为了验证模拟结果，与相应的模具材料进行了电磁成形和压花试验。仿真结果与实验结果吻合较好。
In electromagnetic forming of thin sheet metal, the die is located within the effective range of the electromagnetic wave. Correspondingly, a current is induced not only in the sheet metal, but also in the die. Like the current in the workpiece, also the current in the die interacts with the electromagnetic wave, resulting in Lorentz forces and changes of the electromagnetic field. With the aim to study the influence of different electromagnetic die properties in terms of specific electric resistance and relative magnetic permeability, electromagnetic simulations were carried out. A change in the resulting forming forces in the sheet metals was determined. To confirm the simulation results, electromagnetic forming and embossing tests were carried out with the corresponding die materials. The results from simulation and experiment were in good agreement.