锻压技术

铝合金薄板电磁自由弯曲

英文标题：Free bending of thin aluminum alloy sheet by electromagnetic force

作者：龙安林王文平万敏陈晓伟熊威人

单位：北京航空航天大学

分类号：TG391

出版年,卷(期):页码：2015,40(9):48-52

摘要：

采用并列矩形螺旋线圈对不同铝合金薄板进行电磁自由弯曲成形研究。分析了试样中点变形挠度与试样宽度及电磁放电电压的关系，结果表明：试样宽度与矩形螺旋线圈长度比值（当量宽度）为0.55时，试样中点挠度最大，板料塑性变形量最大，电磁成形装备利用率最高，从而得到使用矩形螺旋线圈进行电磁弯曲成形时的最佳板料宽度；采用最佳板料宽度进行不同铝合金板不同放电电压下的电磁自由弯曲成形，试验结果表明，试样中点变形挠度和放电电压呈二次函数关系。

The electromagnetic free bend-forming of different aluminum alloy sheet was studied by the electromagnetic paratactic rectangular spiral coil. The relationship between the midpoint deflection of the samples with the sheet width or the discharging voltage of capacitors was analyzed. The results show that when the ratio of the blank width and the rectangular coil length (equivalent width) is 0.55, the blank midpoint deflection reaches the maximum, and the sheet mental deformation is the largest with the highest efficiency of the electromagnetic forming equipment. So the optimal sheet width is obtained in electromagnetic bend-forming by the rectangular spiral coil. By adopting the optimal sheet width, a number of tests on the different aluminum alloy sheet were carried out under different discharging voltages. It is found that the relationship between the midpoint deflection of the blank and the discharging voltage of capacitors is satisfied with the quadratic function.

基金项目：

国家重点基础研究发展计划（“973”计划）（2011CB12800，2011CB012804）

龙安林（1990-），男，博士研究生；通讯作者：王文平（1971-），女，博士，副教授

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