超薄尾翼径向挤压和多步挤压成形的数值模拟
Numerical Simulation of Lateral Extrusion and Multi-step Extrusion for Ultra Slim Empennage
郭耀华1， 张宝红2， 张治民 2
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作者单位：（1.中北大学 材料科学与工程学院，山西 太原 030051；2.山西省集成精密成形中心，山西 太原 030051）
中文关键字：超薄尾翼； 径向挤压； 分瓣模具； 多步挤压 ；数值模拟
英文关键字： ultra slim empennage; lateral extrusion; interrupted die; multi-step extrusion; numerical simulation
中文摘要：利用有限元分析软件Defrom-3D来模拟超薄尾翼挤压过程。通过对整体模具径向挤压、分瓣模具径向挤压、多步合模挤压三种不同模具的充型、等效应力极值-时间曲线图以及凸模的载荷-行程曲线图的比较，在不考虑现实工况效率的情况下，得出了分步挤压为最佳模具方案。
英文摘要：The extrusion process of ultra slim empennage in lateral extrusion and multi-step extrusion was numerically simulated by finite element analysis software Defrom-3D. The charts of the filling, effective stress-time diagrams as well as extrusion pressure-stroke curves for the punch-pin were obtained with the following three sets of dies scheme respectively, namely integrated lateral extrusion, interrupted lateral extrusion and multi-step extrusion. The simulation results show that the multi-step extrusion is the best one for manufacturing ultra slim empennage taking no account of efficiency under actual working conditions.