Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/5457
Título: Numerical and Experimental Analysis of Balanced and Unbalanced Adhesive Single-Lap Joints between Aluminium Adherends
Autor: Pinto, A. M. G.
Campilho, Raul
Mendes, Isabel R.
Baptista, A. P. M.
Palavras-chave: Aluminium and alloys
Finite element analysis
Fracture mechanics
Joint design
Data: 2014
Editora: Taylor & Francis
Relatório da Série N.º: The Journal of Adhesion;Volume 90, Issue 1
Resumo: The single-lap joint is the most commonly used, although it endures significant bending due to the non-collinear load path, which negatively affects its load bearing capabilities. The use of material or geometric changes is widely documented in the literature to reduce this handicap, acting by reduction of peel and shear peak stresses or alterations of the failure mechanism emerging from local modifications. In this work, the effect of using different thickness adherends on the tensile strength of single-lap joints, bonded with a ductile and brittle adhesive, was numerically and experimentally evaluated. The joints were tested under tension for different combinations of adherend thickness. The effect of the adherends thickness mismatch on the stress distributions was also investigated by Finite Elements (FE), which explained the experimental results and the strength prediction of the joints. The numerical study was made by FE and Cohesive Zone Modelling (CZM), which allowed characterizing the entire fracture process. For this purpose, a FE analysis was performed in ABAQUS® considering geometric non-linearities. In the end, a detailed comparative evaluation of unbalanced joints, commonly used in engineering applications, is presented to give an understanding on how modifications in the bonded structures thickness can influence the joint performance.
Peer review: yes
URI: http://hdl.handle.net/10400.22/5457
DOI: 10.1080/00218464.2013.773258
ISSN: 0021-8464
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/00218464.2013.773258#.VL-TO9KsXTp
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