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 uniform deformation of dual-tube electromagnetic constraint forming

作　　者：邱立[1,2] 何晨骏 张望 Qiu Li;He Chenjun;Zhang Wang(School of Electrical Engineering and New Energy,China Three Gorges Unwersity,Yichang 443002,Hubei,China;Hubei Provincial Key Laboratory far Operation and Control of Cascaded Hydropower Station,Yichang 443002,Hubei,China)

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]梯级水电站运行与控制湖北省重点实验室,湖北宜昌443002

出　　处：《电测与仪表》2021年第11期128-135,共8页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金面上项目(51877122)。

摘　　要：管件电磁胀形因其在轻质工领域具有成形极限高、回弹小等优点而得到广泛研究。然而传统电磁胀形过程中,存在轴向变形非均匀的问合金加题,制约了这一金属加工技术的发展。为此文中在驱动线圈和成形工件引入一约束管件来改善电磁力的分布特性,构建了基于双管件电磁约束成形方法。仿真结果表明,通过调节约束管的高度和电导率可以使成形工件取得比较高的轴向变形均匀度。此外,电磁力和成形速率的对比分析进一步表明采用基于双管件电磁约束成形方法时轴向均匀变形长度为36.3 mm,该值是传统电磁胀形方法下的2倍。显然,通过合理的引入一约束管件亦可以调节电磁力的分布规律,该研究为改善电磁力分布方式的创新提供了新的研究思路。The tube electromagnetic bulging has been widely studied because of its high forming limit and small spring-back in the field of light engineering, however, non-uniform axial deformation of the alloy in the traditional electromagnetic bulging process restricts the development of this metal working technology. In this paper, the constraint tube is introduced into the driving coil and the forming workpiece to improve the distribution characteristics of electromagnetic force, and an electromagnetic constraint forming method based on dual-tube is established. The simulation results show that the high uniformity of axial deformation can be obtained by adjusting the height and the conductivity of the constraint tube. Moreover, the comparison between the electromagnetic force and the forming rate further shows that the axial uniform deformation length is 36.3 mm when the dual-tube EMC forming method is used, which is twice that of the traditional electromagnetic bulging method. Obviously, the distribution law of electromagnetic force can be adjusted by introducing a reasonable constraint tube. This study provides a novel research idea for improving the innovation of the distribution mode of electromagnetic force.

关 键 词：电磁胀形 电磁力分布 约束管件 均匀变形 

分 类 号：TM933[电气工程—电力电子与电力传动]