| Issue |
MATEC Web of Conferences
Volume 7, 2013
JA 2013 – Journées Annuelles de la SF2M 2013 / SF2M Annual Meeting 2013
|
|
|---|---|---|
| Article Number | 02014 | |
| Number of page(s) | 3 | |
| Section | Colloque 2 : Assemblages, Soudage et Collage / Joining, Welding and Sticking | |
| DOI | https://doi.org/10.1051/matecconf/20130702014 | |
| Published online | 07 November 2013 | |
Modélisation et caractérisation des joints collés à hautes vitesses de déformation
Modeling and characterization of bonded joints at high strain rates
LAMIH, CNRS UMR 8201, UVHC, Le Mont Houy, 59313 Valenciennes Cedex 9, France
Ce papier traite de la modélisation de joints collés pour les structures soumises à des sollicitations de type crash. Cette nouvelle modélisation basée sur un élément cohésif tient compte du comportement viscoplastique, de l'endommagement ainsi que de la rupture de l'adhésive. Sensible à la vitesse de déformation l'identification du critère de rupture nécessite une base expérimentale allant jusqu'à de très hautes vitesses de déformations. Un nouveau dispositif d'essais a donc été mis en place sur les barres de Hopkinson afin de solliciter des assemblages à haute vitesse et sous différents angles de chargement.
Abstract
This paper deals with the modeling of bonded joints for structures subjected to dynamic crash loading. This new model based on a cohesive element takes into account the viscoelastic behavior, the damage and the failure of the adhesive. Due to the strain rate sensitivity, the identification of failure criterion requires experimental tests, up to very high strain rates. A new testing device has then been set up on the Hopkinson bar in order to load the assemblies with high strain rates and with different angles.
© Owned by the authors, published by EDP Sciences, 2013
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