Emile Roux
Mines ParisTech
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Publication
Featured researches published by Emile Roux.
Modelling and Simulation in Materials Science and Engineering | 2014
Emile Roux; Modesar Shakoor; Marc Bernacki; Pierre-Olivier Bouchard
A two-dimensional finite element (FE) model is presented to model the nucleation and void growth stages in ductile damage phenomena on the microstructure scale. This model is based on a level-set (LS) method coupled with an advanced re-meshing strategy. Both nucleation modes (interface debonding and inclusion fracture) are modelled through the introduction of micro-voids according to stress-based criteria. The LS method and mesh adaptation are used to accommodate the topology modification of the microstructure and to model multiple void nucleation and growth for different loading paths. The enhanced FE model is adopted to analyse the key features of the damage mechanisms on the micro-scale. The effects of inclusion orientation and of a complex loading path on nucleation and void growth are addressed. Good agreement is found with available experimental and numerical data found in the literature. The results exhibit that the loading path is a key point in damage growth. The proposed FE framework is an efficient technique to study damage phenomena on both simple and realistic microstructures. In the future, such an approach can be used to calibrate macroscopic ductile damage models for a complex loading path.
The 14th International Esaform Conference on Material Forming: ESAFORM 2011 | 2011
Pierre-Olivier Bouchard; Jean-Marie Gachet; Emile Roux
Ductile damage mechanics is essential to predict failure during cold metal forming applications. Several damage models can be found in the literature. These damage models are coupled with the mechanical behavior so as to model the progressive softening of the material due to damage growth. However, the identification of damage parameters remains an issue. In this paper, an inverse analysis approach is set‐up to identify ductile damage parameters, based on different kind of mechanical tests and observables. The Lemaitre damage model is used and damage is coupled with the material behavior. The Efficient Global Optimization (EGO) method is used in a parallel environment. This global algorithm based on kriging meta‐model enables the identification of a set of damage parameters based on experimental observables. Global and local observables are used to identify these parameters and a special attention is paid to the computation of the cost function. Finally, an identification procedure based on displacement f...
Journal of Materials Processing Technology | 2013
Emile Roux; Pierre-Olivier Bouchard
Computational Materials Science | 2013
Emile Roux; Marc Bernacki; Pierre-Olivier Bouchard
Computational Materials Science | 2013
Michel Saby; Marc Bernacki; Emile Roux; Pierre-Olivier Bouchard
The 7th International Conference on Inverse Problems in Engineering (ICIPE) | 2011
Emile Roux; Pierre-Olivier Bouchard
XI International Conference on Computational Plasticity. Fundamentals and Applications - COMPLAS XI | 2011
Jean-Loup Chenot; Pierre-Olivier Bouchard; Lionel Fourment; Patrice Lasne; Emile Roux
conference on computational structures technology | 2010
Emile Roux; Pierre-Olivier Bouchard
The Third International Conference on Computational Modeling of Fracture and Failure of Materials and Structures | 2013
Pierre-Olivier Bouchard; Emile Roux; Marc Bernacki
CSMA 2013 - 11ème colloque national en calcul des structures | 2013
Emile Roux; Marc Bernacki; Pierre-Olivier Bouchard