Revue Nature et Technologie
Volume 8, Numéro 2, Pages 32-38
2016-06-30
The Rousselier Model Implementation For A Dynamic Explicit Analysis Of The Ductile Fracture
Authors : Bensaada Rachid . Almansba Madjid . Ould Ouali Mohand . Hannachi Naceur Eddine .
Abstract
The purpose of this work is to model the ductile fracture of porous metals from a micromechanical point of view. To do this, the Rousselier model is implemented in the finite element code ABAQUS using a VUMat (Vectorized User MATerial) subroutine. The integration algorithm selected for the implementation is the Aravas algorithm, which is based on the ‘backward-Euler’ method; it follows the principle of the elastic prediction – plastic correction. To check the validity of the implemented model, simulations of academic examples and fracture mechanics problems (i.e. CT test and Charpy test) are performed, and a good description of the fracture process is obtained.
Keywords
Damage, ductile fracture, porous media, implementation, micromechanics.
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