中文摘要：

在电磁的形成的试管压缩上的螺线管卷的长度的效果被理论分析或通过顺序的联合数字模拟调查。细节电磁并且在模拟的机械模型被描述。结果证明卷水流波形和当前的频率的振幅随卷长度的增加减少。并且磁性的压力的山峰价值与卷长度相反地成正比。当试管比卷长时，对试管起作用的磁性的力量的分发是不同类的。弄短的卷长度引起最大的变丑和精力效率的增加。数字地计算的结果并且试验性最后的试管侧面之一在好同意。

英文摘要：

The effects of the length of solenoid coil on tube compression in electromagnetic forming were investigated either by theory analysis or through sequential coupling numerical simulation. The details of the electromagnetic and the mechanical models in the simulation were described. The results show that the amplitude of coil current waveform and the current frequency decrease with the increase of the coil length. And the peak value of magnetic pressure is inversely proportional to the coil length. The distribution of the magnetic force acting on the tube is inhomogeneous while the tube is longer than the coil. The shortened coil length causes the increases of the maximum deformation and energy efficiency. The numerically calculated result and the experimental one of the final tube profile are in good agreement.