铝型材挤压过程的一种数值模拟方法

A numerical simulation method of aluminum profile extrusion process

通过优化几何模型,采用有限元法与有限体积法相结合,并在有限体积模拟阶段进行分步计算模拟的方法,成功地进行了一薄壁大挤压比铝型材挤压过程的数值模拟,获得了型材挤压过程中的材料流动速度、应力、应变和温度分布图,并对其结果进行讨论。

The large extrusion ratio forming of a complex thin-walled aluminum profile was simulated successfully in a new simulation system which was developed by integrated the Finite Element Method （FEM）and the multi-stage Finite Volume Method （FVM）. To avoid the time-consuming and obtain the reasonable results during the simulation, optimized geometry models were employed in the pre-processor. The distributions of velocity,effective stress, effective strain and temperature during the extrusion process were obtained and discussed.