An experimental database of springback and twisting U-shaped elongated structures is available from a previous study. The materials are copper alloys: pure Cu, CuBe2, CuFe2P, provided in thin sheets thickness around 0.1 mm. After deep-drawing rectangular blanks, which can be aligned with the tools or slightly misaligned, tool withdrawal, structure exhibits an opening section (2D springback) (3D...

Aiming at the problems of ship plate forming spring-back in theory and experiment, combining the law of sheet metal forming, this paper puts forward a measurement and compensation method of spring-back outside plate of a ship based on the three dimensional NC (numerical control) pressing machine. First, we use Dynaform software for finite element analysis of springback prediction, and then esta...

Springback in sheet bending is a well-defined phenomenon; however, variation of springback difficult to control causing quality problems especially mass-produced goods such as home appliances. As an alternative straight flanging, the rotary die process offers reduced well geometric variation; there little knowledge literature. The effects parameters on behavior flanging and applied appliance si...