Publicou 6 edições por ano
ISSN Imprimir: 1543-1649
ISSN On-line: 1940-4352
Indexed in
A Multiscale Finite Element Approach for Buckling Analysis of Elastoplastic Long Fiber Composites
RESUMO
The present work is devoted to the microbuckling analysis of long fiber composites. A multiscale finite element method (FE2) is combined with the asymptotic numerical method (ANM) to study the elastoplastic instability which may occur in structures at both macroscopic and microscopic scales. The fiber is described by a linear material constitutive law, while the matrix phase is described by a nonlinear Ramberg-Osgood relationship. The stress field is then obtained via the total mechanical strain without any history dependence. Large strains are considered, which induce geometrical nonlinearities in both cases. The ANM framework allows obtaining complex response curves involving limit points in loading and displacement to be obtained. In the present path following procedure, adjustment of the step length is naturally automatic because the validity range of the asymptotic solution is a posteriori estimated depending on the local nonlinearity of the response branches. Numerical examples show the effectiveness of the proposed approach by investigating microscopic and macroscopic instabilities of long fiber composite structures in compression.
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Attipou Kodjo, Nezamabadi Saeid, Daya El Mostafa, Zahrouni Hamid, A multiscale approach for the vibration analysis of heterogeneous materials: Application to passive damping, Journal of Sound and Vibration, 332, 4, 2013. Crossref
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Nezamabadi Saeid, Potier-Ferry Michel, Zahrouni Hamid, Yvonnet Julien, Compressive failure of composites: A computational homogenization approach, Composite Structures, 127, 2015. Crossref
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Nezamabadi Saeid, Zahrouni Hamid, Yvonnet Julien, Potier-Ferry Michel, Multiscale analysis of instabilities in heterogeneous materials using ANM and multilevel FEM, European Journal of Computational Mechanics, 21, 3-6, 2012. Crossref
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Tikarrouchine E., Chatzigeorgiou G., Chemisky Y., Meraghni F., Fully coupled thermo-viscoplastic analysis of composite structures by means of multi-scale three-dimensional finite element computations, International Journal of Solids and Structures, 164, 2019. Crossref
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Greco Fabrizio, Leonetti Lorenzo, Lonetti Paolo, Luciano Raimondo, Pranno Andrea, A multiscale analysis of instability-induced failure mechanisms in fiber-reinforced composite structures via alternative modeling approaches, Composite Structures, 251, 2020. Crossref