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Τίτλος: Comparative studies of localized buckling in sandwich struts with different core bending models
Συγγραφείς: Wadee, M. Ahmer 
Theofanous, Marios 
Yiatros, Stylianos 
Major Field of Science: Engineering and Technology
Field Category: Civil Engineering
Λέξεις-κλειδιά: Structural stability;Bifurcation;Interactive buckling;Localization;Shear deformation;Composite structures
Ημερομηνία Έκδοσης: Μαρ-2010
Πηγή: International Journal of Non-Linear Mechanics, 2010, vol. 45, no. 2, pp. 111–120
Volume: 45
Issue: 2
Start page: 111
End page: 120
Περιοδικό: International Journal of Non-Linear Mechanics 
Περίληψη: Analytical models with geometric non-linearities accounting for interactions between local and global instability modes leading to localized buckling in sandwich struts are formulated. For the core material response, two increasingly sophisticated bending models are compared against each other: Timoshenko beam theory (TBT) and Reddy–Bickford beam theory (RBT). Numerical solutions of the analytical models are validated with the commercial finite element code ABAQUS. It is found that there is a small but significant difference in the critical load between the two models and that the previously obtained solution slightly underestimates the linear buckling strength. More importantly, it is found that the RBT model predicts the onset of interactive buckling before the TBT model and, according to the results from the finite element study, matches the actual behaviour of a strut in both its initial and advanced postbuckling states with excellent correlation.
URI: https://hdl.handle.net/20.500.14279/1267
ISSN: 00207462
DOI: 10.1016/j.ijnonlinmec.2009.10.001
Rights: © Elsevier
Type: Article
Affiliation: Imperial College London 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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