Springback Prediction of Stretching Process using Finite Element Analysis for DP600 Steel Sheet

Slota, Jan; Gajdos, Ivan; Spišák, Emil; Šiser, Marek

doi:10.1515/ama-2017-0001

Abstract

Springback phenomenon is well predicted for some mild steel materials, but not for steels with higher strength. One of the most used tools to stamping optimization is usage of finite element analysis. In order to accurate describe the real behaviour of the materials for stamping of vehicle panels, the application of proper hardening rule seems to be crucial. Due to higher accuracy of predicted results, high strength steel sheets are usually modelled by means of kinematic or mixed isotropic-kinematic hardening models. In this paper the springback prediction of advanced high strength steel DP600 by numerical simulation was investigated. Through cyclic tension-compression tests, the material characterization has been performed for DP600 steel sheet. Different hardening models (isotropic, kinematic and mixed isotropic-kinematic) used in the simulations were compared with expreriment. The Yoshida–Uemori model succesfully describe the kinematic behaviour of the material and provided more accurate results than others.

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Springback Prediction of Stretching Process using Finite Element Analysis for DP600 Steel Sheet

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