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基于电磁成形冲击载荷大、成形效率高的特点,提出了将电磁成形局部加载方式应用于整体壁板的新思路。以2024铝板为研究对象,通过工艺实验和有限元模拟分析,研究了加载路径和加载间距对成形效果的影响。结果表明,加载路径和加载间距对板料变形程度的影响较大,从中间向两边的加载路径可得到最大的弯曲挠度为3.204mm,是从左到右加载路经的1.3倍;随着加载间距的增大,板料的塑性流动更为充分,弯曲挠度明显提高,有限元模拟结果与实验结果一致。
Based on the characteristics of large impact load and high forming efficiency of electromagnetic forming, a new idea of applying the electromagnetic local loading method to the integral wallboard is proposed. Taking 2024 aluminum plate as the research object, the effect of loading path and loading spacing on the forming effect was studied through the process experiment and finite element simulation analysis. The results show that the loading path and loading distance have a great influence on the degree of sheet deformation. The maximum bending deflection obtained from the middle to both loading paths is 3.204mm, which is 1.3 times of the left-to-right loading path. Increasing the spacing, the plastic sheet flow more fully, bending deflection increased significantly, the finite element simulation results and experimental results.