电磁轴向冲击加载装置管状线圈的有限元分析

Finite element analysis of electromagnetic tubular coil with axial impact loading system

电磁冲击粉末压制工艺中,电磁线圈是重要的能量载体,如何提高其转换效率是一个关键问题.为了探索最佳电磁线圈几何尺寸与形状的关系,通过ANSYS多物理场对管状线圈轴向电磁力进行了有限元分析,建立了最佳电磁线圈截面的几何形状最佳尺寸计算公式,发现在有效截面积相同的条件下该梯形线圈比传统矩形线圈的有效电磁力大,且有效行程长.当管状线圈横截面积为360 mm^2时,其效率可提高5.57%,有效行程可增加23.07%.为电磁线圈及电磁轴向冲击加载装置的设计提供了参考.

In the electromagnetic impact pressing process,electromagnetic coil is an important energy carrier.How to improve the conversion efficiency is a key issue.In this paper,in order to explore how to achieve the best electromagnetic coil geometry size and shape,the electromagnetic force of the tubular coil is simulated based on the ANSYS Multi/physics field.The optimum parameters in the computational formula of geometry are established in a bid to identify the best electromagnetic coil sectional area.It is found that,under the condition of equal effective sectional area,the axial electromagnetic force of trapezoidal coil is larger and effective stroke of trapezoid coil is longer than those of the conventional rectangular coil.When the cross-sectional area of the tubular coil reaches 360 mm2,the efficiency rises by 5.57%and effective travel increases by 23.07%.The findings may provide reference for the design of the electromagnetic coil and the electromagnetic axial impact loading device.