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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 fiber directions.

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Autor(es)

Wu, Ling -  Noels, Ludovic -  Adam, Laurent -  Doghri, Issam - 

Id.: 55207393

Idioma: inglés  - 

Versión: 1.0

Estado: Final

Cobertura:  international - 

Tipo de recurso: info:eu-repo/semantics/conferenceObject  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: ©2012 Society for Experimental Mechanics Inc.

Requerimientos técnicos:  Browser: Any - 

Relación: [IsBasedOn] Non-local damage-enhanced MFH for multiscale simulations of composites. In Proceedings of the XII SEM International Conference & Exposition on Experimental and Applied Mechanics (pp. 8). (2012).
[References] info:eu-repo/grantAgreement/EC/FP7/235303
[References] XII SEM International Conference & Exposition on Experimental and Applied Mechanics, Costa Mesa, USA (11-14 June 2012)

Fecha de contribución: 24-mar-2015

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