| 板材无压边多点成形中回弹的数值模拟 |
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| 引用本文： | 陈喜娣,蔡中义,李明哲.板材无压边多点成形中回弹的数值模拟[J].塑性工程学报,2003,10(5):9-13. |
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| 作者姓名： | 陈喜娣 蔡中义 李明哲 |
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| 作者单位： | 吉林大学,辊锻研究所,长春,130025 |
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| 基金项目： | 国家自然科学基金(50275063)，国家“十五”重点科技攻关项目(2001BA203B11) |
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| 摘 要： | 回弹是板材无压边多点成形中必须解决的问题。本文采用显一隐式算法,对回弹进行数值模拟,采用动态显式算法模拟板材成形过程,隐式算法模拟卸载回弹过程。对不同板厚、不同变形量的圆柱面、球面、马鞍面的无压边多点成形过程进行数值模拟,得出了回弹趋势和回弹分布,这些结果对多点成形技术的工程应用,具有重要的参考价值和指导意义。
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| 关 键 词： | 板材 多点成形 回弹 显—隐式算法 |
| 文章编号： | 1007-2012(2003)05-0009-05 |
Numerical simulation of springback of multi-point forming for sheet metal without blankholders |
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| CHEN Xi-di CAI Zhong-yi LI Ming-zhe.Numerical simulation of springback of multi-point forming for sheet metal without blankholders[J].Journal of Plasticity Engineering,2003,10(5):9-13. |
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| Authors: | CHEN Xi-di CAI Zhong-yi LI Ming-zhe |
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| Abstract: | Springback is a problem that must be solved in the Multi-point forming (MPF) without blank holders. The springback processes are simulated based on explicit-implicit algorithm in this paper. Dynamic-explicit formulation is employed to analyse the loading processing and implicit formulation to unloading process. The MPF processes of cylindrical surface, sphere and saddle surface with different thickness under different deformations were simulated; the springback and its distribution under different conditions were obtained. These results provide significant guidance to the application of MPF technique. |
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| Keywords: | sheet metal multi-point forming springback explicit-implicit algorithm |
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