基于ALE算法的空心薄壁铝型材模具结构优化

针对空心薄壁铝合金型材挤压成型后薄壁内凹缺陷进行了数值模拟分析,得到了其在稳态时不同方向上的金属流速分布及在焊合室内的金属压力分布状况。模拟结果表明:由于截面上不同部分之间产生了较大的流速差,且金属在不同方向上的流速不相同,从而导致了缺陷的存在。根据分析采用了增加阻流块的设计方案,以此达到阻碍金属流动,减小流速差的目的。经过仿真计算发现修改后的模具结构最终能获得合格的产品。

Hollow Thin-walled Aluminum Profile Die Structure Optimization Based on ALE Algorithm

Aiming at forming thin-walled concave defect,at the hollow thin-walled aluminum profile extrusion,this paper adopts the numerical simulation analysis and gets the metal flow velocity distribution in the steady-state different directions and metal stress distribution in welding cavity.The simulation results show that the defects is occurred,because there are speed difference between the different parts in the same section and the metal flow's velocity is not same in different directions.According to the anal...