This paper on "An Elastic-Plastic Stress and Strain Analysis of V-Bend Process by Finite Element Method" was presented at the NAFEMS World Congress on Design, Simulation & Optimisation: Reliability & Applicability of Computational Methods - 9-11 April 1997, Stuttgart, Germany.

Summary

In order to determine the inevitable springback of a bended connector an elastic-plastic incremental finite element analysis has been carried out in this work. The simulation of a sheet metal bending process has been designed as a plane strain problem. The whole bending process has been analyzed to provide sufficiently accurate data about stress distribution and deformed geometry. The load-deflection curve has been calculated on the basis of reaction forces and compared with experimentally obtained results. Friction effects and material characteristics such as work hardening are also covered in the analysis. The accuracy of the simulation results, springback angle and the residual stress distribution after unloading are discussed through the comparison with the experimental results.