Modeling delamination growth in composites under fatigue loadings of varying amplitudes

A numerical model was developed to simulate the progressive delamination of a composite subjected to mode I fatigue loading regimes of varying amplitude. The model employs a cohesive zone approach, which combines damage mechanics and fracture mechanics, and requires only standard material data as in...

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Bibliographic Details
Published in:Composites. Part B, Engineering Engineering, 2012-03, Vol.43 (2), p.533-541
Main Authors: Landry, Benoit, LaPlante, Gabriel
Format: Article
Language:English
Subjects:
Applied sciences
B. Delamination
B. Fatigue
C. Finite element analysis
Cohesive elements
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Laminates
Physicochemistry of polymers
Polymer industry, paints, wood
Technology of polymers
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Summary:A numerical model was developed to simulate the progressive delamination of a composite subjected to mode I fatigue loading regimes of varying amplitude. The model employs a cohesive zone approach, which combines damage mechanics and fracture mechanics, and requires only standard material data as input, namely the delamination toughness and the fatigue delamination growth curve. The proposed model was validated against delamination growth data obtained from a fatigue test conducted on a DCB specimen. The model predictions agree very well with the experimental results. This model is an initial step toward life prediction of composite structures subjected to complex fatigue regimes.
ISSN:1359-8368
1879-1069
DOI:10.1016/j.compositesb.2011.08.020