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管件电磁成形是依靠磁脉冲力来实现的。影响磁脉冲力的因素很多,但是本文主要研究线圈与工件的轴向相对位置对磁脉冲力分布的影响;进而分析管件受到磁脉冲力变形时,其变形模式(方式)与准静态塑性变形不同;磁脉冲力的形式(峰值、脉宽)、分布与端部约束条件决定管件变形后的形状。在实验中,调节管件与线圈之间的轴向位置,可以完成管件的多种变形形状,验证了理论分析的正确性。
Tube electromagnetic forming is to rely on magnetic pulse force to achieve. There are many factors that affect the magnetic pulse force. However, this paper mainly studies the influence of axial relative position of the coil and the workpiece on the magnetic pulse force distribution. When the tube is subjected to the magnetic pulse force deformation, the deformation mode (mode) is different from the quasi-static plastic deformation The forms of magnetic impulsive force (peak, pulse width), distribution and end constraints determine the deformed shape of the pipe. In the experiment, the axial position between the pipe and the coil can be adjusted to achieve a variety of deformation shapes of the pipe, which proves the correctness of the theoretical analysis.