Sensitivity of Modeling in Sheet Metal Three-Point Cyclic Bending

The aim of this paper is to examine the modeling sensitivity of the three-point bending test by using finite element method (FEM). Three-point bending test has been frequently used to determine the material hardening parameters of sheet metal. As a part of the parameter identification, three-point bending has been simulated and analyzed using FEM. To minimize the computation time, shell element was used to model the sheet metal. The analysis includes implicit and explicit procedures. In particular, this study examines the effect of FEM results by varying the element type, mesh density, and number of integration point. It is shown that the implicit procedure analyze the simulation with very less computation time compared to the explicit procedure. The results also show that only the number of integration point has significant effect on the simulation in both implicit and explicit procedures.