| 轴对称零件拉深过程中的最小无皱压边力 |
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| 引用本文： | 高凯祁,杜颂.轴对称零件拉深过程中的最小无皱压边力[J].北京航空航天大学学报,1996,22(6):738-742. |
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| 作者姓名： | 高凯祁 杜颂 |
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| 作者单位： | 北京航空航天大学制造工程系 |
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| 摘 要： | 对轴对称零件的突缘变形区，动用能量法和二维折线式变位函数，计及材料常数ｎ、ｒ值和板厚变化，揭示了拉深中最小无皱压力的变化规律，指出其最大值明显滞后行突缘变形最大径向拉力的发生时刻，突破了两者基本上同时发生的传统结论计算结果与实验数据符合良好。
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| 关 键 词： | 零件 轴对称零件 塑性屈曲 深冲性能 能量法 |
MINIMUM WRINKLESS BLANK HOLDER FORCE FOR AXIAL SYMMETRY WORKPIECE IN DEEP DRAWING |
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| Gao Kaiqi\ \ Du Song\ \ Hu Shiguang.MINIMUM WRINKLESS BLANK HOLDER FORCE FOR AXIAL SYMMETRY WORKPIECE IN DEEP DRAWING[J].Journal of Beijing University of Aeronautics and Astronautics,1996,22(6):738-742. |
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| Authors: | Gao Kaiqi\ \ Du Song\ \ Hu Shiguang |
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| Abstract: | Based on a 2D broken line model of an annular flange and the energy method,the law of minimum wrinkless blankholder force in deep drawing is discovered,considering the variations in material constants n,r and thickness.It is pointed out that the maximum value of minimum wrinkless blankholder force arrives much later than the moment when the maximum tension of the flange in radial direction is reached,which breaks through the conventional conclusion that they take place at about the same time.The calculated results are in good accordance with the experimental data. |
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| Keywords: | plastic buckling deep drawability energy method blankholder force wrinkling |
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