inproceedings

Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet


Modelisation Group (2015) : An incremental multilevel computational homogenization method for elastoplastic composites




An incremental multilevel computational homogenization method for elastoplastic composites

Trung Hieu Hoang and Mohamed Guerich and Julien Yvonnet




inproceedings

18th International Conference on Composite Structures (ICCS18)

In the present work, a multilevel computational homogenization method is proposed for solving structure problems made of elastoplastic phases. To reduce computations costs of classical multi- level finite element methods [2], we use an incremental framework, initiated in Hill citehill1965 and developed for semi-analytical method e.g. in [1]. In semi-analytical approaches, the approx- imation of the Mori-Tanaka scheme induces limitations in accuracy for some configurations like strongly anisotropic microstructures and does not allow capturing effective smooth hardening in- duced by the different elastoplastic phases. In the proposed method, we use the incremental ap- proach by computing directly the effective macroscopic tensor related to the linearized problem numerically by Finite Elements on an RVE. The method is validated through an example of ho- mogenization of a composite microstructure with elastic rigid fibers, embedded in an elastoplastic matrix. The results showed that the method is more accurate than semi-anlytical methods and is less computationally demanding than FE2. An incremental multilevel computational homogenization method for elastoplastic composites -

To cite this publication :


Trung Hieu Hoang, Mohamed Guerich, Julien Yvonnet: An incremental multilevel computational homogenization method for elastoplastic composites. Dans: 18th International Conference on Composite Structures (ICCS18), Lisbonne, Portugal, 2015.





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