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| AZ31 镁合金板材气体胀形的模拟及成形极限的预测 |
| Simulation of Gas Bulging and Prediction of Forming Limit for AZ31 Magnesium Alloy Sheet |
| Received:October 20, 2014 Revised:November 10, 2014 |
| DOI：10.3969/j.issn.1674-6457.2014.06.007 |
| 中文关键词: 镁合金 气体胀形 成形极限 |
| 英文关键词: AZ31 magnesium alloy gas bulging forming limit |
| 基金项目:国家自然基金(51175335) |
| Author Name | Affiliation | | ZHOU Guo-wei | 1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
2. State Key Laboratory of Mechanical System and Vibration, Shanghai 200240, China | | LI Da-yong | 1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
2. State Key Laboratory of Mechanical System and Vibration, Shanghai 200240, China | | PENG Ying-hong | 1. School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China
2. State Key Laboratory of Mechanical System and Vibration, Shanghai 200240, China |
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| 中文摘要: |
| 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。 |
| 英文摘要: |
| The finite element model for the experimental method of gas bulging at 300 ℃was built for the AZ31 magnesium 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 comparison of the simulation results with the experimental results. |
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