Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/4538
Título: Single-lap joints of similar and dissimilar adherends bonded with an acrylic adhesive
Autor: Pinto, A. M. G.
Magalhães, A. G.
Campilho, Raul
Moura, M. F. S. F. de
Baptista, A. P. M.
Palavras-chave: Acrylic adhesive
Cohesive damage model
Finite element method
Single\-lap joints
Data: 2009
Editora: Taylor & Francis
Relatório da Série N.º: Journal of Adhesion; Vol. 85, Issue 6
Resumo: In this study, the tensile strength of single-lap joints (SLJs) between similar and dissimilar adherends bonded with an acrylic adhesive was evaluated experimentally and numerically. The adherend materials included polyethylene (PE), polypropylene (PP), carbon-epoxy (CFRP), and glass-polyester (GFRP) composites. The following adherend combinations were tested: PE/PE, PE/PP, PE/CFRP, PE/GFRP, PP/PP, CFRP/CFRP, and GFRP/GFRP. One of the objectives of this work was to assess the influence of the adherends stiffness on the strength of the joints since it significantly affects the peel stresses magnitude in the adhesive layer. The experimental results were also used to validate a new mixed-mode cohesive damage model developed to simulate the adhesive layer. Thus, the experimental results were compared with numerical simulations performed in ABAQUS®, including a developed mixed-mode (I+II) cohesive damage model, based on the indirect use of fracture mechanics and implemented within interface finite elements. The cohesive laws present a trapezoidal shape with an increasing stress plateau, to reproduce the behaviour of the ductile adhesive used. A good agreement was found between the experimental and numerical results.
Peer review: yes
URI: http://hdl.handle.net/10400.22/4538
ISSN: 0021-8464
Versão do Editor: http://www.tandfonline.com/doi/full/10.1080/00218460902880313#.U5mRlpRdXTo
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