| 变压边力对铝合金板冲压成形的影响研究 |
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| 引用本文： | 孙成智,罗思东,王东川,杜汉斌,陈关龙.变压边力对铝合金板冲压成形的影响研究[J].塑性工程学报,2005,12(3):41-45. |
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| 作者姓名： | 孙成智 罗思东 王东川 杜汉斌 陈关龙 |
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| 作者单位： | 1. 上海汽车工业(集团)总公司,汽车工程研究院,上海,200437
2. 上海交通大学,机械工程学院,上海,200030 |
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| 摘 要： | 通过数值模拟和实验,研究了变压边力对铝合金板成形过程中应变路径的变化规律,基于MK法研究应变路径的变化对铝合金板成形极限(FLC)的影响,通过比较不同随时间变化的压边力对铝合金成形极限的影响,揭示变压边力改善铝合金板冲压成形性能的机理。实验和数值模拟结果表明,变压边力改善铝合金板成形性能的主要原因是变压边力对应变路径的影响,对杯形拉深来说,渐增型随时间变化的变压边力可以改善铝合金板的成形性能。
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| 关 键 词： | 板料成形 变压边力 成形极限 应变路径 |
| 文章编号： | 1007-2012(2005)03-0041-05 |
| 修稿时间： | 2004年11月10 |
Mechanism investigation of variable blank-holder forces improving the formability of aluminum alloy sheets during sheet metal forming |
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| SUN Cheng-zhi,LUO Si-dong,WANG Dong-chuan,DU Han-bin,CHEN Guan-dong.Mechanism investigation of variable blank-holder forces improving the formability of aluminum alloy sheets during sheet metal forming[J].Journal of Plasticity Engineering,2005,12(3):41-45. |
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| Authors: | SUN Cheng-zhi LUO Si-dong WANG Dong-chuan DU Han-bin CHEN Guan-dong |
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| Affiliation: | SUN Cheng-zhi 1 LUO Si-dong 3 WANG Dong-chuan 4 DU Han-bin 5 |
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| Abstract: | In this paper, the effect of variable Blank-holder forces (VBHF) on the strain path during sheet metal forming has been investigated by numerical simulation and experiments. The formability of selected aluminum alloy sheet was evaluated by theory prediction of forming limit curve based on the M-K method. The effect of different VBHF on the formability was presented. In order to verify the predictions of strain path, experiments are being carried out using a recently-built multi-points variable blank-holder forces hydraulic press. The results show that increasing VBHF can improve the formability of the selected aluminum alloy sheet during cup deep drawing. |
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| Keywords: | sheet metal forming variable blank-holder force strain path forming limit curve |
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