Mechanical behavior modeling of damaged composite matrix

Mechanical behavior modeling of damaged composite matrix

Hocine BourennaneDjelloul Gueribiz Ahmed Benchatti 

Laboratoire de Génie des Procédés, Université de Laghouat, Algérie

Laboratoire de Génie mécanique, Université de Laghouat, Algérie

Corresponding Author Email: 
bhp.hocine86@yahoo.fr
Page: 
383-393
|
DOI: 
https://doi.org/10.3166/RCMA.28.383-393
| |
Published: 
30 September 2018
| Citation

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Abstract: 

In this study, the effect induced by damage on the mechanical behavior of composite matrix is investigated. For this propose an analytical approach is proposed to predict the mechanical behavior of damaged matrix. The undertaken formulation is based on the concept of complacency and the notions of facture mechanics, while the damage is assumed to be  in  the form of an ellipsoidal crack. The effect is quantified directly on the elastic constants and particularly on the Young's  modulus. The aim is to determine the effective Young's modulus of the damaged matrix for a given crack volume fraction. This approach enables us to determine the three components of Young's modulus for the damaged matrix. The results obtained from this approach compared to those of conventional multi-scales homogenization approaches and to those obtained by the finite element homogenization approach, reveals that the proposed approach is more representative for the real cracks case. In addition based on this approach, new expressions for the damage parameters can be proposed.

Keywords: 

composites mechanical behavior, damage, polymer matrix

1. Introduction
2. Model formalism
3. Multi-scale homogenization methods
4. Finite elements approach
5. Conclusion
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