| AZ31 镁合金板材气体胀形的模拟及成形极限的预测 |
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| 引用本文： | 周国伟,李大永,彭颖红.AZ31 镁合金板材气体胀形的模拟及成形极限的预测[J].精密成形工程,2014,6(6):52-55. |
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| 作者姓名： | 周国伟 李大永 彭颖红 |
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| 作者单位： | 1. 上海交通大学 机械与动力工程学院，上海 200240; 机械系统与振动国家重点实验室，上海 200240
2. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| 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。
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| 关 键 词： | 镁合金 气体胀形 成形极限 |
| 收稿时间： | 2014/10/20 0:00:00 |
| 修稿时间： | 2014/11/10 0:00:00 |
Simulation of Gas Bulging and Prediction of Forming Limit for AZ31 Magnesium Alloy Sheet |
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| ZHOU Guo-wei,LI Da-yong and PENG Ying-hong.Simulation of Gas Bulging and Prediction of Forming Limit for AZ31 Magnesium Alloy Sheet[J].Journal of Netshape Forming Engineering,2014,6(6):52-55. |
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| Authors: | ZHOU Guo-wei LI Da-yong and PENG Ying-hong |
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| Affiliation: | ZHOU Guo-wei, LI Da-yong, PENG Ying-hong ( 1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China; 2. State Key Laboratory of Mechanieal System and Vibration, Shanghai 200240, China) |
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| Abstract: | 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. |
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| Keywords: | AZ31 magnesium alloy gas bulging forming limit |
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