Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/4081
Título: Feasibility of the extended finite element method for the simulation of composite bonded joints
Autor: Campilho, Raul
Pinto, A. M. G.
Banea, Mariana D.
Chaves, Filipe J. P.
Silva, Lucas F. M. da
Palavras-chave: Bonded joints
eXtended finite element method
Fracture toughness
Data: 2013
Editora: Trans Tech Publications
Relatório da Série N.º: Materials Science Forum; Vol. 730-732
Resumo: Adhesive-bonding for the unions in multi-component structures is gaining momentum over welding, riveting and fastening. It is vital for the design of bonded structures the availability of accurate damage models, to minimize design costs and time to market. Cohesive Zone Models (CZM’s) have been used for fracture prediction in structures. The eXtended Finite Element Method (XFEM) is a recent improvement of the Finite Element Method (FEM) that relies on traction-separation laws similar to those of CZM’s but it allows the growth of discontinuities within bulk solids along an arbitrary path, by enriching degrees of freedom. This work proposes and validates a damage law to model crack propagation in a thin layer of a structural epoxy adhesive using the XFEM. The fracture toughness in pure mode I (GIc) and tensile cohesive strength (sn0) were defined by Double-Cantilever Beam (DCB) and bulk tensile tests, respectively, which permitted to build the damage law. The XFEM simulations of the DCB tests accurately matched the experimental load-displacement (P-d) curves, which validated the analysis procedure.
Peer review: yes
URI: http://hdl.handle.net/10400.22/4081
Versão do Editor: http://www.scientific.net/MSF.730-732.513
Aparece nas colecções:ISEP – CIDEM – Artigos

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