摘要
以TC4钛合金大深腔反向变曲率复杂蒙皮零件为研究对象,设计了两种成形工艺方案,分别为超塑成形工艺方案、热成形+超塑成形工艺方案,采用PAM-STAMP软件进行了工艺仿真分析,得到了零件成形过程中厚度的变化,预测了零件的成形质量,确定了采用热成形+超塑成形工艺方案,并设计了相应的成形模具进行试验验证。结果表明,采用热成形+超塑成形组合工艺可成功制备出合格的TC4钛合金大深腔反向变曲率复杂零件,成形后零件最薄处厚度约为1.24 mm,减薄率约为22.5%,满足设计强度要求,同时成形结果与仿真结果一致。
Taking the TC4 titanium alloy complex skin parts with large deep cavity and reverse variable curvature as the research object,two forming process schemes were designed,which were superplastic forming process scheme and hot forming+superplastic forming process scheme,respectively.The simulation analysis of process was carried out by PAM-STAMP software.The thickness change of parts during forming process was obtained,the forming quality of parts was predicted,and hot forming+superplastic forming process scheme was confirmed to be used,and the corresponding forming dies were designed for test verification.The results show that adopting the combined process of hot forming+superplastic forming can successfully prepare the TC4 titanium alloy complex skin parts with large deep cavity and reverse variable curvature.The thickness at the thinnest location of the part is about 1.24 mm after forming,and the thinning rate is about 22.5%,which meets the design strength requirements.Meanwhile,the forming results are consistent with the simulation results.
作者
高大明
王会东
王珏
付和国
谢洪志
吴晗
李明
张晓巍
GAO Da-ming;WANG Hui-dong;WANG Jue;FU He-guo;XIE Hong-zhi;WU Han;LI Ming;ZHANG Xiao-wei(Shenyang Aircraft Industry Group Co.,Ltd.,Shenyang 110850,China)
出处
《塑性工程学报》
CAS
CSCD
北大核心
2023年第2期48-54,共7页
Journal of Plasticity Engineering
基金
民用飞机专项科研项目(MJ-2018-G-45)。
关键词
超塑成形
钛合金
有限元分析
模具优化
superplastic forming
titanium alloy
finite element analysis
die optimization
