复杂横截面铝型材挤压模具的设计与数值模拟分析

Design and numerical simulation analysis on extrusion die of aluminum section with complicated profile

文章选取一个特定的复杂横截面型材,分析其模具的设计方案;建立了挤压过程的有限元模型,利用基于任意拉格朗日欧拉法(ALE)的Hyperxtrude专用模块,对铝合金型材的挤压过程进行模拟分析。通过对模具设计方案的数值模拟,重点对坯料在模具中不同位置的速度分布结果进行分析,并对比实际试模情况,对模具的设计方案进行了修正,探讨了在挤压工艺中通过模具结构的调整,实现对金属流动进行控制,以改善模腔内的材料流动,获得合格的型材产品。

The paper chooses a section of complicated profile, analyzes its die design project, develops the FEM model of the extrusion process, simulates and analyzes the extrusion process of the aluminum section by using the Hyperxtrude module based on the Arbitrary Lagrangian-Eulerian method （ALE）. The velocity distribution of the billet at different position of the die is analyzed in the simulation analysis and the result is compared with that of the production test. Then the die design project is modified and the ways to control the metal flowing for obtaining quality product are discussed.