[Vers des prédictions de perméabilité et de formation de vides dans les procédés d'élaboration des matériaux composites par infusion : un modèle de contact bifluide–solide impliquant les effets de tension de surface et de mouillage]
Un modèle de contact bifluide–solide, impliquant les effets de tension de surface et de mouillage, a été développé dans un code éléments finis, afin de fournir une caractérisation précise des fluides (résine/air) et des fibres imperméables à l'échelle microscopique au cours des procédés d'élaboration des matériaux composites par infusion de résine. Ce modèle est basé sur une description eulérienne des deux fluides non miscibles et sur des conditions aux limites qui décrivent les phénomènes de mouillage aux interfaces fluides/fibres. Le front fluide est décrit par une méthode Level set, sur laquelle les forces capillaires sont considérées. Les évolutions des gouttes sous l'effet du mouillage ont été simulées pour illustrer ce problème complexe.
A bifluid–solid contact model involving surface tension and wetting effects is developed within a finite element framework, in order to provide an accurate characterization of the fluids and fibrous behaviours during Liquid Composite Molding processes. This model is based on a Eulerian approach of two immiscible fluid (resin/air) domains with boundary conditions which prescribe wetting phenomena at fluid/fiber interfaces. The fluid interface is described by the Level Set method, on which capillary force is considered. Numerical simulations of a drop evolution with wetting effects are used to illustrate this challenging physical problem.
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Mot clés : Matériaux composites, Porosités, Capillarité, Mouillage, Modèle bifluide, Level Set, Stokes, Éléments finis
Yujie Liu 1 ; Nicolas Moulin 1 ; Julien Bruchon 1 ; Pierre-Jacques Liotier 1 ; Sylvain Drapier 1
@article{CRMECA_2016__344_4-5_236_0, author = {Yujie Liu and Nicolas Moulin and Julien Bruchon and Pierre-Jacques Liotier and Sylvain Drapier}, title = {Towards void formation and permeability predictions in {LCM} processes: {A} computational bifluid{\textendash}solid mechanics framework dealing with capillarity and wetting issues}, journal = {Comptes Rendus. M\'ecanique}, pages = {236--250}, publisher = {Elsevier}, volume = {344}, number = {4-5}, year = {2016}, doi = {10.1016/j.crme.2016.02.004}, language = {en}, }
TY - JOUR AU - Yujie Liu AU - Nicolas Moulin AU - Julien Bruchon AU - Pierre-Jacques Liotier AU - Sylvain Drapier TI - Towards void formation and permeability predictions in LCM processes: A computational bifluid–solid mechanics framework dealing with capillarity and wetting issues JO - Comptes Rendus. Mécanique PY - 2016 SP - 236 EP - 250 VL - 344 IS - 4-5 PB - Elsevier DO - 10.1016/j.crme.2016.02.004 LA - en ID - CRMECA_2016__344_4-5_236_0 ER -
%0 Journal Article %A Yujie Liu %A Nicolas Moulin %A Julien Bruchon %A Pierre-Jacques Liotier %A Sylvain Drapier %T Towards void formation and permeability predictions in LCM processes: A computational bifluid–solid mechanics framework dealing with capillarity and wetting issues %J Comptes Rendus. Mécanique %D 2016 %P 236-250 %V 344 %N 4-5 %I Elsevier %R 10.1016/j.crme.2016.02.004 %G en %F CRMECA_2016__344_4-5_236_0
Yujie Liu; Nicolas Moulin; Julien Bruchon; Pierre-Jacques Liotier; Sylvain Drapier. Towards void formation and permeability predictions in LCM processes: A computational bifluid–solid mechanics framework dealing with capillarity and wetting issues. Comptes Rendus. Mécanique, Volume 344 (2016) no. 4-5, pp. 236-250. doi : 10.1016/j.crme.2016.02.004. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2016.02.004/
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