Study on Weld Movement in Simple Part Forming with Laser Tailor Welded Blanks
The weld modeling techniques were studied and the method of numerical simulation of tailor-welded blanks(TWB) forming was established.TWBs with thickness of 0.8 mm and 1.2 mm were used to draw a simple box with three drawing depths(90 mm,70 mm,50 mm).Four kinds of drawing processes were used for each depth.The results show that the last scheme(stepped blank holder plus weld clamp column) can eliminate the wrinkles on the thinner part,reduce the weld movement and improve the formability of the TWBs.