Simulation of sheared edge formation process in blanking of sheet metals
Simulation of sheared edge formation process in blanking of sheet metals
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DOI：
10.1016/s0924-0136(03)00803-3
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发表时间：
2003-09-22
影响因子：
6.3
通讯作者：
Iizuka, T
中科院分区：
文献类型：
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作者：
Hatanaka, N;Yamaguchi, K;Iizuka, T
使用作者开发的硬塑性有限元代码对金属板材的冲裁过程（即翻转、抛光表面和抛光轮的形成）进行了数值模拟。 Jeong 表达式用作延性断裂准则并与模拟相关联。翻转长度随着凸模和凹模之间的间隙增加以及材料的 n 值增加而增加。另一方面，随着间隙减小和n值减小，抛光长度增加。毛刺高度相对于刀刃半径线性增加。提出了一种传统的模拟方法，根据间隙和 n 值来预测形成的抛光长度。为了证实有限元模拟的结果，还使用不同间隙和不同材料的 3 圈厚度的金属板进行了冲裁实验。实验结果与有限元模拟结果吻合良好。 (C) 2003 Elsevier B.V. 保留所有权利。
Numerical simulation of the blanking process of sheet metals, i.e. the formation of rollover, burnish surface and buff, is done using a rigid-plastic finite element code developed by the authors. The Jeong expression is used as a ductile fracture criterion and is linked with the simulation. The rollover length increases as the clearance between the punch and die increases, and as the n-value of the material increases. On the other hand, the burnish length increases as the clearance decreases and the n-value decreases. The burr height increases linearly with respect to the radius of the tool edge. A conventional simulation method is proposed that predicts the formed burnish length from the clearance and n-value. To confirm the results of the finite element simulation, blanking experiments were also carried out using sheet metal of 3 turn thickness under various clearances and for different materials. The experimental results show good agreement with the finite element simulation results. (C) 2003 Elsevier B.V. All rights reserved.