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为解决传统电磁成形工艺中金属板件变形均匀性较差的问题，设计了一种基于新型磁场变换器的板件电磁成形方法。该方法将磁场变换器中部区域的导体用绝缘材料替代，使得感应涡流只能在磁场变换器的端面与底面分布，以便更好地控制电磁力实现板件的均匀变形。以AA1060铝板为研究对象，利用COMSOL有限元仿真软件建立了基于新型磁场变换器的板材电磁成形过程电磁-结构耦合模型。仿真结果表明，新型磁场变换器端面上壁与底面上下壁的几何参数变化均能改变感应涡流，进而实现对电磁力的调控。在这一电磁力的加载下，基于新型磁场变换器的板件电磁成形均匀成形范围相较于无磁场变换器提高了1.56倍，相较于传统磁场变换器提高了1.25倍。采用新型磁场变换器能在一定程度上解决了板件电磁成形变形均匀度的问题。
Abstract：To address the problem of poor deformation uniformity in traditional electromagnetic forming processes for metal sheets, a sheet metal electromagnetic forming method utilizing a novel magnetic field converter was developed. The proposed approach replaces the conductive material in the central region of the magnetic field converter with insulating material, thereby restricting the induced eddy currents to the end surfaces and bottom surfaces of the magnetic field converter. This strategic modification enables precise control of electromagnetic forces to achieve homogeneous deformation of sheet metal. Taking AA1060 aluminum sheets as the research objects, and an electromagnetic-structural coupled model for the sheet metal electromagnetic forming process based on the novel magnetic field converter was developed using COMSOL finite element simulation software. Simulation results reveal that modifying geometric parameters such as the upper wall of end surface and the upper/lower walls of bottom surface of the novel magnetic field converter can effectively redistribute induced eddy currents, thus enabling the regulation and control of electromagnetic force. Under the electromagnetic force loading, the uniform forming range of sheet metal electromagnetic forming based on the novel magnetic field converter exhibits a 1.56-fold enhancement compared to non-magnetic field converters and a 1.25-fold improvement compared to traditional magnetic field converters. The adoption of novel magnetic field converter effectively mitigates deformation uniformity challenges in sheet metal electromagnetic forming processes.
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基本信息:
中图分类号:TG391
引用信息:
[1]邱立,陈烁,方春华,等.基于新型磁场变换器的板件电磁成形电磁力分布及成形效果研究[J].塑性工程学报,2026,33(02):270-280.
基金信息:
国家自然科学基金资助项目(51877122; 51507092)
2026-02-12
2026-02-12
2026-02-12