In this paper, springback has been determined experimentally in plane strain sheet bending for a sheet with high planar anisotropy at different orientations to the rolling direction. Springback was predicted by analysis of plane strain bending using the Finite Element Method (FEM). The mechanical properties of sheet metal (at different angles to rolling direction) and anisotropic parameters were determined from uniaxial tension tests and were used as the input for FEM analysis. Analytical calculations were also carried out to predict springback at different orientations. Comparison of the results showed that FEM predictions are closer to experimental results than the analytical calculations. The present work is expected to provide more insight into understanding of the effect of anisotropy on springback in sheet bending operations and provide information which can be useful for manufacturers of sheet metal components (involving bending) to choose the optimum orientation of bend axis so as to get the desired quality after forming.
VARIATION OF THE RESIDUAL STRESSES AND SPRINGBACK IN SHEET BENDING FROM PLANE-STRAIN TO PLANE-STRESS CONDITION USING FINITE ELEMENT MODELLING