On the fracture prediction of 304L stainless steel sheets utilizing different hardening models

Dizeci Ş., DARENDELİLER H., Kaftanoǧlu B.

10th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes, NUMISHEET 2016, Bristol, İngiltere, 4 - 09 Eylül 2016, cilt.734 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 734
  • Doi Numarası: 10.1088/1742-6596/734/3/032021
  • Basıldığı Şehir: Bristol
  • Basıldığı Ülke: İngiltere
  • TED Üniversitesi Adresli: Hayır

Özet

© Published under licence by IOP Publishing Ltd.Fracture prediction is one of the challenging problems in sheet metals. Forming limit curves at fracture (FLCF), as a tool to determine fracture in sheet metal processes, are obtained through the use of numerical analyses. As one of the approaches, the ductile fracture criteria (DFCs) represent the fracture initiation of the sheets formed by different loading histories. In this study, the effects of three different hardening models on different DFCs to predict the fracture for stainless steel 304L have been investigated. The results show that most of DFCs work better in the region ϵ2 <0 especially with the kinematic hardening model. However, for the region ϵ2>0 where the stretching conditions are dominant, none of them could precisely estimate the fracture initiation.