摘要
应用MARC软件对铝合金的超塑性胀形进行仿真,分析正反向和正向超塑胀形对成形件壁厚分布以及不同变形量对胀形结果的影响,比较了2种不同胀形方式对成形件壁厚分布和成形极限的影响。结果表明,采用合理的正反胀形可以很好地改善成形件的厚度不均匀性并大大提高成形极限,实验验证了仿真和实验结果相吻合。
MARC software was used to simulate superplastic bulge forming process of aluminum alloy. The influence of forward-backward and forward superplastic bulge on the thickness distribution and different deformation amounts on the bulge results were analyzed. And the effects of two kinds of bulge processes on the thickness dis^bution and forming limit were compared. It is concluded that proper application of forward-backward bulge can improve the uniformity of thickness distribution and greatly increase the forming limit. Experiments reveal that finite element simulation data tally comparatively well with results of practical tests.
出处
《模具工业》
2009年第3期23-26,共4页
Die & Mould Industry
关键词
超塑性
有限元模拟
正反气胀成形
厚度分布
suPerplasticity
FEM simulation
forward-backward bulge forming
thickness distribution
