Matériaux composites soumis à de grandes vitesses de sollicitation

6533b820fe1ef96bd127ab15

RESEARCH PRODUCT

Matériaux composites soumis à de grandes vitesses de sollicitation

Bénédicte Bonnet Alain Thionnet Jacques Renard

subject

Grande vitesse de déformation polypropylène [ PHYS.COND.CM-MS ] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci][PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]endommagement viscoélasticité [PHYS.COND.CM-MS] Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]fibres de verre modélisation

description

International audience; L'objet de ce travail est de modéliser la réponse à des sollicitations quasi-statiques et dynamiques de deux matériaux composites utilisés dans l'industrie automobile : un tissu verre/polypropylène et une matrice polypropylène renforcée de fibres courtes en verre. Pour ce faire, des essais mécaniques à différentes vitesses de sollicitation (de 10-4s-1 à 100s-1 ) ont été menés. La campagne expérimentale nous a permis d'identifier pour chacun des matériaux les phénomènes dissipatifs prépondérants et de quantifier leur part dans la déformation totale, en fonction de la vitesse. Nous proposons ensuite un modèle unifié de comportement permettant de répondre de manière cohérente aussi bien à des sollicitations quasi-statiques que dynamiques et valable pour les deux matériaux.

year	journal	country	edition	language
2006-01-01

https://hal.archives-ouvertes.fr/hal-00144371/document

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