Feasibility of the Extended Finite Element Method for the Simulation of Composite Bonded Joints

• Type: Article in International Conference Proceedings Book
• Date: 2013

Authors

Campilho, RDSG (Author) Other; Pinto, AMG (Author) Other; Banea, MD (Author) FEUP; Chaves, FJP (Author) Other; da Silva, LFM (Author) FEUP

Conference proceedings International

Title: ADVANCED MATERIALS FORUM VI, PTS 1 AND 2

Pages: 513-518

6th International Materials Symposium (MATERIALS 2011)/15th Meeting of SPM

Guimaraes, PORTUGAL, APR 18-20, 2011

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 1 Citation

Scientific classification

FOS: Engineering and technology > Materials engineering

Other information

Authenticus ID: P-005-3NX

DOI: 10.4028/www.scientific.net/msf.730-732.513

Abstract (EN): 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)(FEM. The fracture toughness in pure mode I (G(Ic)) and tensile cohesive strength (sigma(0)(n)) 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-delta) curves, which validated the analysis procedure.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6