基于Simufact.Forming软件的盘形件等温锻造过程的模拟研究

Simulation of Isothermal Forging Process of Disk Parts Based on Simufact.Forming Software

基于Simufact.Forming有限元软件对TC4钛合金盘件等温锻造过程进行了模拟,包括坯料镦粗和模锻成形过程。根据等效塑性应变、等效应力和应力三轴度对盘件等温锻造过程中的变形特征和损伤进行了分析。结果表明:在整个成形过程中,坯料心部的塑性变形较大,而边部与模具接触的位置应力分布较大;鼓肚位置的应力三轴度最大,且随着压下量的增加而增加,此位置是坯料易开裂位置,这主要和变形过程中的拉应力状态相关。

The isothermal forging process of TC4 titanium alloy disk parts was simulated based on Simufact.Forming finite element software, including upsetting and die forging process. According to the equivalent plastic strain, equivalent stress and stress triaxiality, the deformation characteristics and damage of the disk parts in isothermal forging process were analyzed. The results show that in the whole forming process, the plastic deformation of the core of the blank and the stress distribution of the contact between the edge and the die are larger; the stress triaxiality in the bulge position is greater, and increases with the increase of the reduction amount. This is easy to crack position of the blank, which is mainly related to the tensile stress state in the deformation process.