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Mesoscopic comparison of interface tool/workpiece for simulation by FEM of EN AW 1350 bulk forming alloy

机译：EN AW 1350大块成形合金有限元模拟的界面工具/工件的介观比较

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摘要

This paper presents an improved numerical simulation of bulk metal forming processes. It takes into the account the advanced formalism of large displacements and large deformations. Also, the interface workpiece formalism is considered. Metallographic studies are conducted to determine the evolution of the micro hardness as a function of annealing time and that to characterize accurately the plastic range of aluminum alloy for a range of plasticity 160%. The obtained results of metallographic studies are used to simulate a upsetting under the friction law of the plastic wave. A numerical simulation by FEM of bulk forming alloy is carried out by replacing the real profile of the surface roughness by two triangular profiles, the first has the same height as the real profile and the second has the same area then by a trapezoidal profile of the same height. The obtained results are compared to Challen and Oxley results in order to validate the triangular profile used in the friction model of plastic wave.
机译：本文提出了一种改进的大块金属成形过程的数值模拟。它考虑到了大位移和大变形的高级形式主义。此外，还考虑了界面工件形式。进行金相研究以确定随退火时间变化的显微硬度的演变，并准确表征铝合金在160％塑性范围内的塑性范围。金相研究的结果被用来模拟在塑性波的摩擦定律下的up锻。通过用两个三角形轮廓代替表面粗糙度的真实轮廓来进行块体成形合金的有限元数值模拟，第一个轮廓具有与真实轮廓相同的高度，第二个轮廓具有相同的面积，然后通过梯形轮廓形成。相同的高度。将所得结果与Challen和Oxley结果进行比较，以验证塑性波摩擦模型中使用的三角形轮廓。

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