Semi analytical modeling of springback in arc bending and effect of forming load

The analytical model for springback in arc bending of sheet metal can serve as an excellent design support. The amount of springback is considerably influenced by the geometrical and the material parameters associated with the sheet metal. In addition, the applied load during the bending also has a significant influence. Although a number of numerical techniques have been used for this purpose, only few analytical models that can provide insight into the phenomenon are available. A phenomenological model for predicting the springback in arc bending was proposed based on strain as well as deformation energy based approaches. The results of the analytical model were compared with the published experimental as well as FE results of the authors, and the agreement was found to be satisfactory.