A semi-analytical method to predict net-tension failure of mechanically fastened joints in composite laminates

A Finite Fracture Mechanics model is proposed to predict the net-tension strength of composite mechanically fastened joints. A modification of coupled stress–energy criteria is suggested to take properly into account the effect of the R-curve in determining the crack length corresponding to the unst...

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Bibliographic Details
Published in:Composites science and technology 2013-03, Vol.76, p.69-76
Main Authors: Catalanotti, G., Camanho, P.P.
Format: Article
Language:English
Subjects:
A. Polymer–matrix composites (PMCs)
Applied sciences
B. Fracture
B. Strength
Crack propagation
Criteria
Exact sciences and technology
Forms of application and semi-finished materials
Fracture mechanics
Fracture mechanics (crack, fatigue, damage...)
Fracture toughness
Fundamental areas of phenomenology (including applications)
Laminates
Mathematical analysis
Mathematical models
Physics
Polymer industry, paints, wood
Solid mechanics
Strength
Structural and continuum mechanics
Technology of polymers
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Summary:A Finite Fracture Mechanics model is proposed to predict the net-tension strength of composite mechanically fastened joints. A modification of coupled stress–energy criteria is suggested to take properly into account the effect of the R-curve in determining the crack length corresponding to the unstable crack propagation. The proposed model works for quasi-isotropic laminates and it requires as input the longitudinal strength and the fracture toughness of the laminate. The predictions obtained show good agreement when compared with the experimental results.
ISSN:0266-3538
1879-1050
DOI:10.1016/j.compscitech.2012.12.009