Eigenvalue buckling of functionally graded cylindrical shells reinforced with graphene platelets (GPL)

Wang, Y, Feng, C, Zhao, Z and Yang, J 2018, 'Eigenvalue buckling of functionally graded cylindrical shells reinforced with graphene platelets (GPL)', Composite Structures, vol. 202, pp. 38-46.


Document type: Journal Article
Collection: Journal Articles

Title Eigenvalue buckling of functionally graded cylindrical shells reinforced with graphene platelets (GPL)
Author(s) Wang, Y
Feng, C
Zhao, Z
Yang, J
Year 2018
Journal name Composite Structures
Volume number 202
Start page 38
End page 46
Total pages 9
Publisher Elsevier
Abstract This paper investigates the eigenvalue buckling of functionally graded graphene platelets (GPLs) reinforced cylindrical shells consisting of multiple layers through finite element method (FEM). The mechanical properties of the composites, including Young's modulus, mass density and Poisson's ratio, are determined by modified Halpin-Tsai model and rule of mixture. Parametric study is conducted to investigate the effects of the weight fraction, geometry and distribution of GPLs, number of layers, shell dimensions and existence of cutout on the buckling. The results show that apart from concentration the GPL distribution in polymer matrix significantly influences the buckling behaviors of the cylindrical structures. Larger sized GPLs with fewer graphene layers have better reinforcing effects than their counterparts with smaller surface area and more graphene layers. The distribution of stresses along the thickness of the shells suggests the increase of the number of layers significantly decreases the stress gradient between two neighboring layers, which is beneficial to reduce the risk of delamination. Moreover, the effects of cutout imperfection on the buckling behaviors of the cylindrical shells are comprehensively investigated.
Subject Theoretical and Applied Mechanics
Composite and Hybrid Materials
Numerical Modelling and Mechanical Characterisation
Keyword(s) Cylindrical shells
Elastic buckling
Functionally graded material
Graphene platelets
DOI - identifier 10.1016/j.compstruct.2017.10.005
Copyright notice © 2017 Elsevier Ltd. All rights reserved.
ISSN 0263-8223
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