Understanding Cohesive Law Parameters in Ductile Fracture Initiation and Propagation
- 18 August 2021
- journal article
- research article
- Published by River Publishers in European Journal of Computational Mechanics
- Vol. 30 (1), 51–80
- https://doi.org/10.13052/ejcm1779-7179.3012
Abstract
Continuum Damage Mechanics is successfully employed to describe the behaviour of metallic materials up to the onset of fracture. Nevertheless, on its own, it is not able to accurately trace discrete crack paths. In this contribution, Continuous Damage Mechanics is combined with the XFEM and a Cohesive Law to allow the full simulation of a ductile fracture process. In particular, the Cohesive Law assures an energetically consistent transition from damage to crack for critical damage values lower than one. Moreover, a novel interpretation is given to the parameters of the cohesive law. A fitting method derived directly from the damage model is proposed for these parameters, avoiding additional experimental characterization.Keywords
This publication has 14 references indexed in Scilit:
- Damage driven crack initiation and propagation in ductile metals using XFEMComputational Mechanics, 2012
- Cohesive traction–separation laws for tearing of ductile metal platesInternational Journal of Impact Engineering, 2012
- A damage model for ductile crack initiation and propagationComputational Mechanics, 2011
- A cohesive zone model which is energetically equivalent to a gradient-enhanced coupled damage-plasticity modelEuropean Journal of Mechanics - A/Solids, 2010
- Continuum Models of Ductile Fracture: A ReviewInternational Journal of Damage Mechanics, 2009
- A thermodynamic method for the construction of a cohesive law from a nonlocal damage modelInternational Journal of Solids and Structures, 2009
- On the numerical prediction of the ductile fracture in metal formingEngineering Fracture Mechanics, 2008
- A comparative study on finite element methods for dynamic fractureComputational Mechanics, 2007
- A robust and consistent remeshing-transfer operator for ductile fracture simulationsComputers & Structures, 2006
- Three-dimensional modeling of ductile crack growth: Cohesive zone parameters and crack tip triaxialityEngineering Fracture Mechanics, 2005