Development of a cohesive zone model for fatigue/fracture characterization of composite bonded joints under mode II loading

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Marcelo Francisco Moura (Author) FEUP; J. P. M. Gonçalves (Author) Other

Journal

Title: International Journal of Adhesion and Adhesives

Vol. 54

Pages: 224-230

ISSN: 0143-7496

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 10 Citations

ISI Web of Science

Scopus - 19 Citations

Scientific classification

FOS: Engineering and technology > Mechanical engineering

Other information

Authenticus ID: P-009-Q3D

DOI: 10.1016/j.ijadhadh.2014.07.002

Abstract (EN): In this work a suitable cohesive zone model for high-cycle fatigue of bonded joints under mode II loading is developed. Stiffness degradation as a function of time is simulated by means of a damage parameter that accounts for static and fatigue damage. Finite element analyses of the end notched flexure test considering different coefficients of the modified Paris law and different load ratios were performed. A data reduction scheme based on the crack equivalent concept and Timoshenko Beam theory was adapted to fatigue analysis thus avoiding monitoring crack length during experiments, which is particularly cumbersome to execute in fatigue tests under mode II loading. The resulting numerical crack growth rates as a function of mode II strain energy release rate were compared with the input modified Paris laws. The verified good agreement shows the suitability of the model concerning fatigue/fracture characterization of adhesively bonded joints under high-cycle fatigue submitted to mode II loading.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7