Transactions of Materials and Heat Treatment

Title：Numerical simulation research on stamping-necking process of barrel-type workpiece

Authors： WU Zhen-ting1 WANG yan-min2(1.Scientific and Research Department Luohe Vocational and Technology College Luohe 462002 China 2.Computer Engineering Department Luohe Vocational and Technology College Luohe 462002 China)

Unit：

KeyWords： barrel-type workpiece necking technology stamping numerical simulation

ClassificationCode：TG386

year,vol(issue):pagenumber：2009,34(5):58-61

Abstract：

The explicit dynamic finite element method can be used effectively to analyze the cloud picture of stress,strain and displacement of the stamping-necking process of barrel-type workpiece.The relations beween the forming quality and the plastic deformation behaviour of the workpiece were analyzed.The workpiece failure is mainly due to the stress concentration caused by the uneven material flow speed of the plastic deformation zone.The necking force increases with increasing friction coefficient and die angle.The necking force will be decreased as backpressure increases the fillet radius of die's brim.

Funds：

2004年度河南省科技厅规划项目(0424220079)

Reference：

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