Transactions of Materials and Heat Treatment

Title：Numerical simulation and deforming control of concave curvature flanging in automobile panels

Authors： HAN Dong-feng1 LIN Jian-ping1 CHEN Shui-sheng1 GUAN Hua-jun2 (1. College of Mechanical Engineering Tongji University Shanghai 201804 China 2.Shanghai Volkswagen Co. Ltd. Shanghai 201805 China)

Unit：

KeyWords： deforming control uneven flanging arris process parameter

ClassificationCode：TG386.3;U463

year,vol(issue):pagenumber：2009,34(6):83-87

Abstract：

By analyzing the geometry of the forming part,it is figured out that concave curvature flanging causes the uneven arris. The geometry of concave curvature flanging in flat plane was abstracted and the flanging process was simulated with sheet-metal forming FED codes ETA/Dynaform. Result shows that the circumferential shearing stress in the arris region causes the defect. Then the process parameters were studied and several rules were concluded that uneven tendency increases with increasing radius of punch and the flanging height,while the defect can be reduced by decreasing the radius of die,clearance ,flanging contour curvature and the friction coefficient.

Funds：

Reference：

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