Cohesive Zone Modeling for 3D Ductile Crack Propagation

Abstract:

Computational modeling of three-dimensional crack propagation in very ductile materials is still a challenge in fracture mechanics analysis. In the present work a new stress-triaxiality-dependent cohesive zone model (TCZM) is proposed to describe elastic-plastic fracture process in full three-dimensional specimens. The cohesive parameters are identified as a function of the stress triaxiality from ductile fracture experiments. The predictions of TCZM show good agreement with the experimental results for both side-grooved C(T) specimen and rod bar specimen.

• Periodical: Applied Mechanics and Materials (Volume 853)
• Pages: 132-136
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.853.132
• Online since: September 2016
• Authors: Xiao Li, Huang Yuan*
• Keywords: 3D Ductile Fracture Simulation, Cohesive Zone Modeling, Stress Triaxiality, Stress-Triaxiality-Dependent Cohesive Zone Model (TCZM)

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