| 板材多点成形回弹补偿与控制的方法研究 |
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| 引用本文： | 张海明,蔡中义,李明哲.板材多点成形回弹补偿与控制的方法研究[J].塑性工程学报,2007,14(3):32-35. |
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| 作者姓名： | 张海明 蔡中义 李明哲 |
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| 作者单位： | 吉林大学,辊锻工艺研究所,长春,130025 |
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| 基金项目： | 国家自然科学基金;面向21世纪教育振兴行动计划(985计划) |
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| 摘 要： | 基于数值模拟的结果,提出了修正基本体群成形面补偿回弹,获得精确形状零件的方法,并描述了该方法的主要步骤。曲面重构是修正时关键问题之一,对简单曲面文章先拟合B样条曲线,再利用曲线扫掠的方法生成曲面,对复杂曲面则直接拟合B样条曲面,以保证曲面的光滑性。抛物面件和球面件多点成形的应用结果表明,该方法可以很好地补偿多点成形中的回弹。
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| 关 键 词： | 多点成形 有限元 数值模拟 回弹 |
| 文章编号： | 1007-2012（2007）03-0032-04 |
| 收稿时间： | 2006-06-16 |
| 修稿时间： | 2006-06-16 |
Study on the compensating and controlling of the springback in multi-point forming of sheet metal |
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| ZHANG Hai-ming,CAI Zhong-yi,LI Ming-zhe.Study on the compensating and controlling of the springback in multi-point forming of sheet metal[J].Journal of Plasticity Engineering,2007,14(3):32-35. |
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| Authors: | ZHANG Hai-ming CAI Zhong-yi LI Ming-zhe |
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| Affiliation: | Roll Forging Technology of Jilin University, Changchun 130025 China |
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| Abstract: | A method is proposed which modified the forming surface of element group in the Multi-point forming(MPF) by iterative ways according to the numerical simulation results.The procedures are described,and how to re-construct the modified surface is one of the key problems.For simple surface,the B spline is fitted first,and the surface can be swept with the line;for more complicated surface,the B spline surface is fitted directly.The forming of parabola surface and spherical surface were simulated with the method,the simulation results show that this method can compensate the springback in the MPF. |
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| Keywords: | multi-point forming FEM numerical simulation springback |
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