Transactions of Materials and Heat Treatment

Title：Research on the influence of weld-line shapes on TWBs forming properties

Authors： Gan Yong Wang Hanchao Guo Yingying Li Yugang

Unit： Mechanic and Electronic Engineering Guilin University of Electronic Technology

KeyWords： numerical simulation dome test weld-line shapes forming properties

ClassificationCode：

year,vol(issue):pagenumber：2014,39(10):32-37

Abstract：

Based on some common weld-line shapes such as linear-weld-line, parabola-weld-line, arc-weld-line and broken-weld-line, the TWBs formability with different weld-line shapes was studied using numerical simulation software Dynaform combined with the dome test. The studies show that the linear-weld-line of TWBs has high limit forming height, but its motion quantity of weld-line is very large. The stress concentration of TWBs with broken-weld-line is produced at the break point easily. With contrast，TWBs with arc-weld-line has a better formability. Therefore, the influences of changing diameter and changing position of arc-weld-line on sheet metal formability were researched. It is concluded that the limit forming height increases with the increasing area of the thick side area, but the motion quantity of weld-line decreases meanwhile. Finally, the broken-weld-line can be replaced by the arc-weld-line, and it is benefit for the forming process when designing the TWBs by choosing large diameter and arranging the weld position in the middle of the blank near to the thin side.

Funds：

广西自然科学基金资助项目（2013GXNSFAA019298）

甘勇（1973-），男，博士，教授

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