锻压技术

双向加载式管件电磁翻边中的屈曲问题

英文标题：Buckling problem on electromagnetic flanging for pipe under biaxial loading

作者：张无名张望邱立

单位：三峡大学国网安徽省电力有限公司太和县供电公司梯级水电站运行与控制湖北省重点实验室

分类号：TG391；TM154

出版年,卷(期):页码：2022,47(8):102-110

摘要：

与单线圈电磁翻边成形相比，双向加载式电磁翻边成形的电磁耦合更加复杂，导致系统的鲁棒性降低，易出现屈曲问题。为此，对屈曲现象形成的原因进行分析，发现轴向线圈在翻边区域产生的磁通的分布差异过大是形成屈曲的主要原因。采用优化轴向线圈结构参数的方法，建立仿真模型，设计探究方案，揭示轴向线圈结构参数对双向加载式电磁翻边成形的影响规律，而后根据仿真分析结果选择表现较佳的参数组合形成新方案。将原方案与新方案的双向加载式电磁翻边成形结果进行对比，结果表明：轴向线圈参数优化后的双向加载式电磁翻边方案在更宽的放电范围内保持成形效果良好，成形性能得到了改善，拥有更强的鲁棒性。

Compared with the electromagnetic flanging of single coil, the electromagnetic coupling of electromagnetic flanging under biaxial loading is more complex, which leads to reduce robustness of the system and it′s prone to buckling problems. Therefore, the reasons for the buckling phenomenon were analyzed, and it was found that the main factor for the buckling was excessive difference in the magnetic flux distribution caused by the axial coil in flanging area. Then, by adopting the method of optimizing the structural parameters for the axial coil, the simulation model was established, the exploration scheme was designed, the influence law of the structural parameters for the axial coil on the electromagnetic flanging under biaxial loading was revealed, and a new scheme was formed according to the simulation analysis results to select the better parameters combination. Furthermore, the electromagnetic flanging results of the original scheme and the new scheme under biaxial loading were compared. The results show that the electromagnetic flanging scheme under biaxial loading with optimized axial coil parameters maintains good forming effect in a wider discharge range, the forming performance is improved, and the robustness is stronger.

基金项目：

国家自然科学基金资助项目（51877122，51507092）；三峡大学学位论文培优基金项目（2021SSPY061）

作者简介：张无名（1997-），男，硕士研究生，E-mail：nameless_zhang@qq.com；通信作者：邱立（1984-），男，博士，副教授，E-mail：Doctor_QiuL@163.com

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