Phase field modeling of ductile fracture and application in metal forming

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Waseem S., Erdoğan C., Yalçinkaya T.

26th International ESAFORM Conference on Material Forming, ESAFORM 2023, Krakow, Poland, 19 - 21 April 2023, vol.28, pp.1593-1602 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 28
  • Doi Number: 10.21741/9781644902479-172
  • City: Krakow
  • Country: Poland
  • Page Numbers: pp.1593-1602
  • Keywords: Ductile Fracture, Finite Element Method, Phase Field Fracture
  • Middle East Technical University Affiliated: Yes


A phase field model for ductile fracture is coupled with the Modified Mohr Coulomb (MMC) model for plastic damage evolution and subsequent crack growth. An energy-based damage threshold is applied to control degradation due to ductile damage. The model is implemented through a user subroutine. MMC parameters from the literature are utilized and found to be compatible with the model, accurately reproducing material response curves in a variety of loading conditions for 6016-T4 aluminum alloy. The influence of model parameters is demonstrated and additionally the Nakazima test is simulated to demonstrate the capability of the model predicting the formability of the material through a failure locus. The model is found capable of reproducing experimentally observed crack paths and quantitative material behavior.