邱立,何晨骏,张望.双管件电磁约束成形的电磁分布与均匀性变形研究[J].电测与仪表,2021,58(11):128-135. Qiu Li,He Chenjun,Zhang Wang.Study on Electromagnetic Force Distribution and Axial uniformity of Tube electromagnetic bulging[J].Electrical Measurement & Instrumentation,2021,58(11):128-135.
双管件电磁约束成形的电磁分布与均匀性变形研究
Study on Electromagnetic Force Distribution and Axial uniformity of Tube electromagnetic bulging
In the tube electromagnetic bulging, the length and outer diameter of driving coil are the main geometric parameters that affect the distribution of electromagnetic force and the axial tube uniformity. Based on this, this paper explores the influence of these two parameters on the relative uniform deformation of workpiece in electromagnetic forming from the aspects of magnetic force line characteristics, radial electromagnetic force distribution, axial relative length and so on. The results show that the changes of the height and outer diameter of the forming coil modify the characteristics of the magnetic force line and the electromagnetic force distribution at the end of the tube, hence compared with the short and coarse driving coil, the proportion of uniform deformation on the bulging axis of the tube with slender coil is increased by nearly 42%. Obviously, the tube electromagnetic bulging based on slender driving coil is easier to achieve axial uniform deformation, this study provides.
