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

作　　者：杨东 孙鹏 司昕璐[2] 

机构地区：[1]陕西法士特汽车传动集团有限公司,陕西西安710119 [2]西安机电信息技术研究所,陕西西安710065

出　　处：《热加工工艺》2017年第11期145-148,共4页Hot Working Technology

摘　　要：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.

关 键 词：等温锻造 有限元模拟 等效塑性应变 等效应力 应力三轴度 

分 类 号：TG316[金属学及工艺—金属压力加工]