Phase-field modeling of ductile fracture with continuum-to-discrete crack transition
Theoretical and Applied Fracture Mechanics, cilt.147, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 147
- Basım Tarihi: 2026
- Doi Numarası: 10.1016/j.tafmec.2026.105804
- Dergi Adı: Theoretical and Applied Fracture Mechanics
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, DIALNET, Academic Search Ultimate (EBSCO), Engineering Source (EBSCO)
- Anahtar Kelimeler: Abaqus, Ductile fracture, Ductile tearing, Finite element method, Phase-field fracture
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
Phase-field fracture has become one of the most attractive methods for modeling failure in recent years and has been successfully applied to the simulation of various complex fracture phenomena, including ductile fracture. This work focuses on phase-field modeling of ductile fracture within a finite element framework, extending the classical approach by incorporating discrete cracks to address issues related to the extreme distortion of damaged elements. This is achieved through an element deletion technique triggered by the local phase-field value. The model is further equipped with a stress-state-dependent, threshold-based plastic energy term. The proposed framework is implemented in Abaqus using user-defined subroutines for implicit finite element analysis, and its capability is demonstrated through several 2D and 3D numerical and experimental examples from the literature, including tearing-type fracture. Load–displacement curves and complex crack patterns are compared with experimental results, and fracture tests of different specimens are reproduced numerically with the proposed model with high accuracy.