The Rousselier Model Implementation For A Dynamic Explicit Analysis Of The Ductile Fracture
Journal: Revue Nature et Technologie (Vol.8, No. 2)Publication Date: 2016-06-30
Authors : Bensaada Rachid . Almansba Madjid . Ould Ouali Mohand . Hannachi Naceur Eddine .;
Page : 32-38
Keywords : Damage; ductile fracture; porous media; implementation; micromechanics.;
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.
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