%0 Journal Article %T 2D modeling of the behavior of an adhesive in an assembly using a non-associated elasto-visco-plastic model %+ MMA %A Créac'Hcadec, Romain %A Cognard, Jean-Yves %Z WOS %< avec comité de lecture %@ 0021-8464 %J Journal of Adhesion %I Taylor & Francis %V 85 %N 4-5 %P 239-260 %8 2009-06-01 %D 2009 %R 10.1080/00218460902881790 %K Adhesion %K Finite Element Analysis %K Interface elements %K Inverse technique %K Modeling %K Non-linear behaviorJournal articles %X This paper presents a contribution to the development of a numerical model for an adhesive in an assembly, starting from a large data base of experimental results in the case of radial monotonic loadings. The experimental results were obtained with a modified Arcan-type fixture using specific geometries which strongly limit the influence of edge effects in order to obtain reliable information about the non-linear behavior of the adhesive. These results underline that deformations in the adhesive are much larger in shear than in peel. Thus, a non-associated 2D model, with a specific yield function, was proposed to represent accurately the experimental observations. As the stress state is not uniform in the adhesive joint for the proposed Arcan-type fixture, inverse identification techniques using non-linear finite element simulations were used. Firstly, for a given strain rate, an elasto-plastic model was proposed and its behavior was analyzed through different numerical examples. Secondly, an extension to elasto-visco-plastic models was proposed for a wide range of deformation rates under tensile-shear loading tests. Results of numerical examples and comparisons with experimental data are presented using joint-type elements (or interface elements) which allow one to limit the numerical cost in the case of bonded structures with low edge effects. %G English %L hal-00449123 %U https://hal.science/hal-00449123 %~ UNIV-BREST %~ ENSTA-BRETAGNE %~ ENSTA-BRETAGNE-LBMS %~ ENIB