| 金属薄板面内成形过程的有限元分析 |
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| 引用本文： | 程侠,邰卫华.金属薄板面内成形过程的有限元分析[J].长安大学学报(自然科学版),2005,25(4):84-86. |
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| 作者姓名： | 程侠 邰卫华 |
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| 作者单位： | 1. 长安大学,特殊地区公路工程教育部重点实验室,陕西,西安,710064
2. 密歇根大学,机械工程系,密歇根州,迪波市,48126 |
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| 摘 要： | 基于金属板材塑性变形的损伤本构关系，运用有限元数值法分析了金属薄板的面内成形过程。首先假设材料损伤发生在局部区域，发现当损伤到达其临界值时，板内会产生颈缩并迅速扩展；接着分析了薄板内部损伤和变形的发展过程及其对材料成形性能的影响。最后用有限元法计算得到了2024-T3和6111-T4铝板的成形极限曲线以及相应的试验数据。结果表明，用有限元法计算的数值曲线与试验数据相当吻合。
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| 关 键 词： | 机械工程 金属板材 成形极限曲线 材料损伤 有限元方法 M-K模型 |
| 文章编号： | 1671-8879（2005）04-0084-03 |
| 收稿时间： | 2004-09-08 |
| 修稿时间： | 2004年9月8日 |
Finite element analysis of in-plane forming processes of sheets |
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| Cheng Xia,TAI Wei-hua.Finite element analysis of in-plane forming processes of sheets[J].JOurnal of Chang’an University:Natural Science Edition,2005,25(4):84-86. |
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| Authors: | Cheng Xia TAI Wei-hua |
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| Abstract: | The sheet metal forming processes under in-plane deformation were simulated by using finite element method based on a coupled elasto-plasticity with damage constitutive laws. It is assumed that the material damage in the localized zone results in the necking in the metal sheet, then the development of in-plane strain localization in sheets was analyzed and the forming limit curves (FL Cs) were predicted for Al 2023-T3 and Al 6111-T4 sheets. The calculated results of FL and Cs are in good agreement with the measured ones.5 figs, 6 refs. |
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| Keywords: | mechanical engineering sheet metal forming limit curve plastic damage finite element method (FEM) (M-K) model |
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