›› 2004, Vol. 40 ›› Issue (9): 62-66.
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Chen Wei;Yang Jichang;Lin Zhongqin
Published:
Abstract: Weld-bead movement and poorer formability are the urgent problems that need solving during forming automobile panels with tailor-welded blanks (TWBs). Calculating formula for weld-bead movement of TWBs in transverse uniaxial stretching is deduced. Based on analyzing the characteristics of automobile door-inner, two sheet metal and the position of weld-bead are determined, and two schemes of forming processes are put forward, which are “ step blank-holder ” and “ step blank-holder & weld-bead clamping bar ”. By means of dynamic finite element method, the effects of step blank-holder and weld-bead clamping bar on weld-bead movement are researched. After decreasing weld-bead movement, the formability of tailor-welded blanks is greatly improved according to the forming limited diagram, stress distribution, strain distribution and thickness thinning.
Key words: Automobile panels, Formability, Tailor-welded blanks, Weld-bead movement
CLC Number:
TG376
Chen Wei;Yang Jichang;Lin Zhongqin. WELD-BEAD MOVEMENT AND FORMABILITY OF TAILOR-WELDED BLANKS DURING FORMING AUTOMOBILE PANELS[J]. , 2004, 40(9): 62-66.
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