Numerical investigations on a framework for fracture prediction in metal forming with a material model based on stress-rate dependence and non-associated flow rule

Tetsuo Oya, J. Yanagimoto, K. Ito, G. Uemura, N. Mori

Research output: Contribution to journalConference article


In this paper, the proposed framework for fracture prediction during sheet metal forming is explained and some numerical investigations are presented to demonstrate the effectiveness of this method. In particular, the role of parameters that affects the forming limit curves, which are represented by the initiation of local bifurcation in each stress rate, are examined; namely, anisotropic parameters and the KC value, which means a stress-rate dependence, and other material properties. The newly proposed concept of forming limit diagram is used to evaluate the formability of the concerned material and working process.

Original languageEnglish
Article number12155
JournalJournal of Physics: Conference Series
Issue number1
Publication statusPublished - 2018 Aug 6
EventNUMISHEET 2018: 11th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes - Tokyo, Japan
Duration: 2018 Jul 302018 Aug 3


ASJC Scopus subject areas

  • Physics and Astronomy(all)

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