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Fracture analysis of composite co‐cured structural joints using decohesion elements
Author(s) -
CAMANHO P. P.,
DÁVILA C. G.,
PINHO S. T.
Publication year - 2004
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.2004.00695.x
Subject(s) - materials science , delamination (geology) , composite number , composite material , shrinkage , structural engineering , residual stress , finite element method , residual strength , fracture mechanics , residual , computer science , engineering , paleontology , tectonics , algorithm , subduction , biology
ABSTRACT Delamination is one of the predominant forms of failure in laminated composite structures, especially when there is no reinforcement in the thickness direction. To develop composite structures that are more damage tolerant, it is necessary to understand how delamination develops, and how it can affect the residual performance. A number of factors such as residual thermal stresses, matrix‐curing shrinkage and manufacturing defects affect how damage will grow in a composite structure. It is important to develop computationally efficient analysis methods that can account for all such factors. The objective of the current work is to apply a newly developed decohesion element to investigate the debond strength of skin‐stiffener composite specimens. The process of initiation of delaminations and the propagation of delamination fronts is investigated. The numerical predictions are compared with published experimental results.