摘要
建立了300℃下AZ31镁合金板材气体胀形实验方法的有限元模型,并对板材胀形过程进行了仿真分析。基于板材应变历史分析,以二阶主应变转折点作为判别准则,预测了板材成形极限应变。通过模拟结果与实验结果的对比,分析解释了不同尺寸试样的变形情况。
The finite element model for the experimental method of gas bulging at 300 ℃ was built for the AZ31 mag-nesium alloy sheet, and simulation analysis was conducted for the sheet bulging process. Based on the analysis of the strain history of the sheet, using the second-order principal strain turning point as the judgment criterion, the sheet forming limit strain was predicted. The deformation of specimens with different dimensions was analyzed and explained based on the com-parison of the simulation results with the experimental results.
出处
《精密成形工程》
2014年第6期52-55,共4页
Journal of Netshape Forming Engineering
基金
国家自然基金(51175335)
关键词
镁合金
气体胀形
成形极限
AZ31 magnesium alloy
gas bulging
forming limit
