In this paper, an explicit dynamic finite element model is built to study the compressive forming technology used in the metal connector of transmission lines of power system. Additionally, to improve the calculation accuracy, an optimized reversed calculation method for determining the equivalent friction coefficients is designed and coupled into the dynamic finite element model. It is validated with a carefully designed experiment that the coupled dynamic finite element model is effective in describing the plastic flow and in determining the grip strength of the compressive forming structure. Finally, with the dynamic finite element model, an optimized compressive forming process window is obtained for controlling the formation of edge flaws while keeping sufficient grip strength.

中文翻译：

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输电线路压缩成形技术数值模拟与试验研究的开发与应用

本文建立了显式动态有限元模型，研究了电力系统输电线路金属连接器的压缩成形技术。此外，为了提高计算精度，设计了一种确定等效摩擦系数的优化逆向计算方法，并将其耦合到动态有限元模型中。精心设计的实验验证了耦合动态有限元模型在描述塑性流动和确定压缩成形结构的夹持强度方面是有效的。最后，通过动态有限元模型，获得优化的压缩成形工艺窗口，以控制边缘缺陷的形成，同时保持足够的夹持强度。