南京航空航天大学学报2012，Vol.44Issue(z1)：91-96,6.
盒形件超塑成形过程中材料流动规律的数值模拟与实验
Numerical Simulation and Experiment on Material Flow Regulation During Superplastic Forming Process of Box-Shaped Part
段奇锐 1原晓明1
作者信息
- 1. 南京航空航天大学机电学院,南京,210016
- 折叠
摘要
Abstract
The superplastic forming process of the box-shaped part is simulated by using finite element software MSC. Marc2010 to optimize the curve of pressure-time under the control of the target strain rate. The fitted curve used in the experiment is based on the simulated pressure-time (p-t) curve. The six parts are obtained along the same optimal experiment p-t curve at six selected pressure respectively (0- 5, 1.0, 1-5, 2. 0, 2. 3 and 2. 5 MPa). By measuring the outline and thickness of the six parts, the experimental result is compared with the numerical simulation result to verify if they agree with each other, and the material flow regulation can be analyzed. The distribution results of stress, strain and reduction rate of the three periods of free bulging, closing up to the cavity and corner fiuing are obtained, which lays the theoretical foundation for the superplastic forming process design of complex parts.关键词
超塑成形/有限元模拟/材料流动规律Key words
superplastic forming/ finite element simulation/ material flow regulation分类
航空航天引用本文复制引用
段奇锐,原晓明..盒形件超塑成形过程中材料流动规律的数值模拟与实验[J].南京航空航天大学学报,2012,44(z1):91-96,6.
