Finite element simulation of springback for wide plate's V-free bending

Currently, it is a desiderative problem and the research hotspots to develop a kind of exact, efficient springback algorithm and enhance the accuracy of the numerical simulation in the course of springback. According to the characteristics of wide plate' s V-free bending, this paper adopts dieless method to resolve springback using a 2D elasto-plastic finite element program developed by our own. Load-on is based on elasto-plastic FEM, and load-off is based on elastic FEM, and both of them adopt static implicit algorithm. The experiments indicate: this program is efficient and credible to the springback simulation of wide plate' s V-free bending. Especially, using the Young' s moduslus changing with plastic deforming can enhance accuracy of springback simulation more.