Numerical Simulation of Bending Process for Steel Plate Using Finite Element Analysis

Defects in bending processes are inevitable due to the plastic deformations created through the material pressing. Cost-effective and good quality of the V shaped die plate bending products can be produced by reducing the bending load, springback, and residual strains. In this article, a plate bending process is employed for Hy-80 steel and 304 stainless steel. A 3D explicit/dynamic finite element model is utilized for analyzing the V shaped die plate bending process. Punch load, springback, and residual strains behaviors are studied by applying various punch radiuses and plate thicknesses. The springback and residual strains behaviors are successfully predicted with respect to punch radius and plate thickness. Although bending load has a significant effect on bending process, the springback and residual strains behavior can be estimated according to the value of punch radius and plate thickness. Springback is reduced when the punch radius decreases and plate thickness increases. Recorded residual strains at the tension side were greater than at the compression side.