A continuous damage fracture model to predict formability of sheet metal
Article first published online: 9 AUG 2012
© 2012 Wiley Publishing Ltd.
Fatigue & Fracture of Engineering Materials & Structures
Volume 36, Issue 3, pages 202–216, March 2013
How to Cite
NGUYEN, N.-T., KIM, D.-Y. and KIM, H. Y. (2013), A continuous damage fracture model to predict formability of sheet metal. Fatigue & Fracture of Engineering Materials & Structures, 36: 202–216. doi: 10.1111/j.1460-2695.2012.01714.x
- Issue published online: 14 FEB 2013
- Article first published online: 9 AUG 2012
- Received in final form 24 May 2012
- Gurson's model;
- Lode parameter;
- McClintock fracture criterion;
- shear effect;
- void growth
A continuous damage fracture model, which consists of a fracture criterion and a continuum damage constitutive law was proposed in this paper to calculate formability of sheet metal. In this model, an extension of the McClintock void growth model was selected as the fracture criterion to be incorporated with a coupled damage-plasticity Gurson-type constitutive law. Also, by introducing a Lode angle dependent parameter to define the loading asymmetry condition, the shear effect was phenomenologically taken into account. The proposed fracture model was implemented in user defined material subroutines in ABAQUS. The model was calibrated and correlated by the uniaxial tension, shear and notched specimens tests. Application of the fracture criterion for the Limit dome height tests was discussed and the simulation results were compared with the experimental data.