Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/4278
Título: Strength improvement of adhesively-bonded joints using a reverse-bent geometry
Autor: Campilho, Raul
Pinto, A. M. G.
Banea, Mariana D.
Silva, R. F.
Silva, Lucas F. M. da
Palavras-chave: Bonded joint
Structural adhesive
Finite element analysis
Strength prediction
Data: 2011
Editora: Taylor & Francis
Relatório da Série N.º: Journal of Adhesion Science and Technology; Vol. 25, Issue 18
Resumo: Adhesive bonding of components has become more efficient in recent years due to the developments in adhesive technology, which has resulted in higher peel and shear strengths, and also in allowable ductility up to failure. As a result, fastening and riveting methods are being progressively replaced by adhesive bonding, allowing a big step towards stronger and lighter unions. However, single-lap bonded joints still generate substantial peel and shear stress concentrations at the overlap edges that can be harmful to the structure, especially when using brittle adhesives that do not allow plasticization in these regions. In this work, a numerical and experimental study is performed to evaluate the feasibility of bending the adherends at the ends of the overlap for the strength improvement of single-lap aluminium joints bonded with a brittle and a ductile adhesive. Different combinations of joint eccentricity were tested, including absence of eccentricity, allowing the optimization of the joint. A Finite Element stress and failure analysis in ABAQUS® was also carried out to provide a better understanding of the bent configuration. Results showed a major advantage of using the proposed modification for the brittle adhesive, but the joints with the ductile adhesive were not much affected by the bending technique.
Peer review: yes
URI: http://hdl.handle.net/10400.22/4278
ISSN: 0169-4243
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1163/016942411X580081#.UzQdUKh_saB
Aparece nas colecções:ISEP – CIDEM – Artigos

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