Authors: Silvio De Barros; Giulio Alfano; Laurent Champaney; Nunziante Valoroso
Addresses: CEFET/RJ – Federal Centre of Technological Education, Rio de Janeiro, Av. Maracanã, 229 CEP 20271-110, Rio de Janeiro/RJ, Brazil ' School of Engineering and Design, Brunel University, London UB8 3PH, UK ' Ecole Nationale Supérieure d'Arts et Métiers, 151 Bd. del'Hôpital 75013 Paris, France ' Dipartimentodi Ingegneria, Universitàdi Napoli Parthenope, Centro Direzionale Isola C4, Napoli 80143, Italy
Abstract: Cohesive-zone models have been widely used for the analysis of interface debonding. In this paper, three of these models are used to study a set of debonding problems. A comparative analysis of the three models is carried out; results are presented and discussed for numerical simulations referring to both single-mode and mixed-mode situations. The results show that the differences between the load-deflection curves obtained for the three models considered, become more evident by increasing the stiffness of the specimen. Considering that the most common joint configuration in automotive industry is the lap-shear joint, the main conclusion of this work is that the joint stiffness will not affect the computational response obtained with the three different models studied here.
Keywords: cohesive zone models; interfacial damage; interface debonding; adhesive joints; joint design; automotive bonded joints; modelling; numerical simulation; load-deflection curves; joint stiffness.
International Journal of Automotive Composites, 2015 Vol.1 No.2/3, pp.158 - 169
Received: 01 Aug 2014
Accepted: 02 Dec 2014
Published online: 10 Jul 2015 *