Non-local Damage-Enhanced MFH for Multiscale Simulations of Composites

  • Ling Wu
  • Ludovic Noels
  • Laurent Adam
  • Issam Doghri
Conference paper
Part of the Conference Proceedings of the Society for Experimental Mechanics Series book series (CPSEMS)

Abstract

In this work, a gradient-enhanced mean-field homogenization (MFH) procedure is proposed for fiber reinforced materials. In this approach, the fibers are assumed to remain linear elastic while the matrix material obeys an elasto-plastic behavior enhanced by a damage model. As classical finite element simulations face the problems of losing uniqueness and strain localization when strain softening of materials is involved, we develop the mean-field homogenization in a non-local way. Toward this end we use the so-called non-local implicit approach, reformulated in an anisotropic way to describe the damage in the matrix. As a result we have a multi-scale model that can be used to study the damage process at the meso-scale, and in particular the damaging of plies in a composite stack, in an efficient computational way. As a demonstration a stack with a hole is studied and it is shown that the model predicts the damaging process in bands oriented with the fibers directions.

Keywords

Mean-field homogenization Non-local Composites Damage Anisotropy 

Notes

Acknowledgement

The research has been funded by the Walloon Region under the agreement SIMUCOMP n° 1017232 (CT-EUC 2010-10-12) in the context of the ERA-NET +, Matera + framework.

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Copyright information

© The Society for Experimental Mechanics, Inc. 2013

Authors and Affiliations

  • Ling Wu
    • 1
    • 2
  • Ludovic Noels
    • 1
  • Laurent Adam
    • 3
  • Issam Doghri
    • 3
    • 4
  1. 1.University of Liege, LTAS-CM3LiègeBelgium
  2. 2.Northwestern Polytechnical University, School of AeronauticsXi’anChina
  3. 3.e-Xstream EngineeringLouvain-la-NeuveBelgium
  4. 4.Université Catholique de LouvainLouvain-la-NeuveBelgium

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