Nonlinear in-plane instability of functionally graded multilayer graphene reinforced composite shallow arches

Yang, Z, Yang, J, Liu, A and Fu, J 2018, 'Nonlinear in-plane instability of functionally graded multilayer graphene reinforced composite shallow arches', Composite Structures, vol. 204, pp. 301-312.


Document type: Journal Article
Collection: Journal Articles

Title Nonlinear in-plane instability of functionally graded multilayer graphene reinforced composite shallow arches
Author(s) Yang, Z
Yang, J
Liu, A
Fu, J
Year 2018
Journal name Composite Structures
Volume number 204
Start page 301
End page 312
Total pages 12
Publisher Elsevier Ltd
Abstract This paper investigates the in-plane instability of functionally graded multilayer composite shallow arches reinforced with a low content of graphene platelets (GPLs) under a central point load. The GPL weight fraction, which is a constant within each individual GPL reinforced composite (GPLRC) layer, follows a layer-wise variation along the thickness direction. The effective Young modulus of the GPLRC is estimated by modified Halpin-Tsai micromechanics model. The virtual work principle is used to establish the nonlinear equilibrium equations for the FG-GPLRC arch fixed or pinned at both ends which are then solved analytically. A parametric study is conducted to examine the effects of distribution pattern, weight fraction, and size of GPL nanofillers and the geometrical parameters of the FG-GPLRC arch on its buckling and postbuckling behaviors. The conditions for multiple limit point buckling to occur in an FG-GPLRC pinned arch are also discussed. It is found that GPL nanofillers have a remarkable reinforcing effect on buckling and postbuckling performances of nanocomposite shallow arches.
Subject Solid Mechanics
Keyword(s) Analytical solutions
Buckling
Functionally graded nanocomposite
Graphene nanoplatelets
Postbuckling
DOI - identifier 10.1016/j.compstruct.2018.07.072
Copyright notice © 2018 Elsevier Ltd. All rights reserved.
ISSN 0263-8223
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