Article dans une revue avec comité de lecture


Apport de la simulation numérique 3D d’essais d’indentation instrumentée à l’identification d’une loi de comportement élasto-viscoplastique d’un béton à hautes performances
Matériaux & Techniques, Volume 105, pp. 102, 2017.

par   Rim BENKABOU , Boussad ABBES , Fazilay ABBES , A. Asroun , Yu Ming LI

Résumé :

Abstract – Contribution of 3D numerical simulation of instrumented indentation testing in the identification of elastic-viscoplastic behaviour law of a high-performance concrete. Highperformance concrete (HPC) are heterogeneous materials at different scales. The identification of effective elastic-viscoplastic properties of such materials requires firstly the measurement of mechanical properties on the scale of each constitutive phase, and secondly the use of a homogenization multiscale approach.
The present work concerns the analysis of the elastic-viscoplastic behavior of the cement matrix of HPC.
An inverse identification methodology of the model parameters of the four constitutive phases of the cementitious matrix was developed. It is based on the coupling between the finite element method 3D simulation of nanoindentation test and a numerical optimization process of the model parameters. The comparison of experimental and numerical “load-penetration depth” curves of each phase shows the good agreement between experimental data and the identified models.


Thématique du GRESPI concernée par cet article :

          -MPSE

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