Parametric Study on Wall Springback in Tailor Welded Long Channels

The common challenge found in cases of high elasticity or high strength or both property materials after forming is springback. The part unloaded after forming tends to recover elastically and the displacement due to elastic recovery is called springback. In this paper, the 3D channels with large length were deformed numerically and parametric study on the wall springback at different section was predicted. For this purpose tailor welded blank was considered. The geometric change along the long axis was also discussed. In addition the effect of parameters on wall springback was also analyzed. The new division factor was included to normalize the springback based on thickness and strength. It was found that the strength ratio and die and punch radius were the top influencing factor for front edge and weld line springback while thickness ratio was the most affecting parameter for the back edge springback.