Phase field modeling of ductile fracture and application in metal forming
26th International ESAFORM Conference on Material Forming, ESAFORM 2023, Krakow, Polonya, 19 - 21 Nisan 2023, cilt.28, ss.1593-1602, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Cilt numarası: 28
- Doi Numarası: 10.21741/9781644902479-172
- Basıldığı Şehir: Krakow
- Basıldığı Ülke: Polonya
- Sayfa Sayıları: ss.1593-1602
- Anahtar Kelimeler: Ductile Fracture, Finite Element Method, Phase Field Fracture
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
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.