A numerical study on chain-die forming of the AHSS U-channel and contrast with roll forming

Advanced high strength steels (AHSS) pose great challenges to sheet metal forming processes in vehicle components manufacturing with their increasing high strength and surface hardness. Chain-die forming is a recently proposed manufacturing method alternative to roll forming, aiming at reducing the redundant strain by enlarging the deformation length through a remarkably large rotation radius. In this work, the performance of AHSS in chain-die...