Forming limit prediction by the Marciniak–Kuczynski model coupled with the evolving non-associated Hill48 plasticity model

Fuhui Shen, Sebastian Münstermann, Junhe Lian*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

This study aims to investigate the numerical prediction of forming limits by the Marciniak–Kuczynski localization criterion coupled with an evolving non-associated plasticity model based on the Hill48 model (enHill48). The evolving plasticity model incorporates both the anisotropic hardening and r-value evolution of the selected steel. The coupling algorithm between the enHill48 model and the Marciniak–Kuczynski localization criterion is developed. To reveal the effects of the evolving plasticity and the flow rule formulation on the forming limit prediction, various versions of the Hill48 model are also coupled with the Marciniak–Kuczynski model and further utilized to compare the predicted results. It is concluded that both the flow potential and yield locus are controlling the final localization of the investigated material under the assumption of the non-associated flow rule.

Original languageEnglish
Article number116384
Number of pages15
JournalJournal of Materials Processing Technology
Volume287
Early online date31 Aug 2019
DOIs
Publication statusPublished - Jan 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • Anisotropy
  • Evolving plasticity model
  • Forming limit diagram
  • Localization
  • Non-associated flow rule
  • Stainless steel

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