Imperfection sensitivity of thermal post-buckling behaviour of functionally graded carbon nanotube-reinforced composite beams

Wu, H, Kitipornchai, S and Yang, J 2017, 'Imperfection sensitivity of thermal post-buckling behaviour of functionally graded carbon nanotube-reinforced composite beams', Applied Mathematical Modelling, vol. 42, pp. 735-752.


Document type: Journal Article
Collection: Journal Articles

Title Imperfection sensitivity of thermal post-buckling behaviour of functionally graded carbon nanotube-reinforced composite beams
Author(s) Wu, H
Kitipornchai, S
Yang, J
Year 2017
Journal name Applied Mathematical Modelling
Volume number 42
Start page 735
End page 752
Total pages 18
Publisher Elsevier
Abstract This paper investigates the imperfection sensitivity of thermal post-buckling behaviour of functionally graded carbon nanotube-reinforced composite (FG-CNTRC) beams subjected to in-plane temperature variation. The material properties of FG-CNTRCs are assumed to be graded in the thickness direction and temperature-dependent. A generic imperfection function is used to model various possible imperfections, including sine type, global and localized imperfections. The governing equations are derived based on the first-order shear deformation beam theory and von-Kármán geometric nonlinearity. The differential quadrature method in conjunction with modified Newton-Raphson technique is employed to determine the thermal post-buckling equilibrium path of imperfect FG-CNTRC beams. Thermal buckling is treated as a subset problem. A parametric study is conducted to examine the effects of imperfection mode, half-wave number, location and amplitude on their thermal post-buckling performance. The influences of distribution pattern and volume fraction of carbon nanotubes, boundary conditions and slenderness ratio are discussed as well. The results indicate that the thermal post-buckling is highly sensitive to the imperfection mode, half-wave number, location as well as its amplitude. It is also shown that the clamped-clamped FG-CNTRC beam is more sensitive to imperfections than those with other boundary conditions whereas other parameters do not substantially affect the imperfection sensitivity of thermal post-buckling behaviour.
Subject Solid Mechanics
Structural Engineering
Keyword(s) Carbon nanotube-reinforced composite
Differential quadrature method
Functionally graded beam
Geometric imperfection
Thermal post-buckling
DOI - identifier 10.1016/j.apm.2016.10.045
Copyright notice © 2016 Elsevier Inc. All rights reserved.
ISSN 0307-904X
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 34 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 8 times in Scopus Article | Citations
Altmetric details:
Access Statistics: 27 Abstract Views  -  Detailed Statistics
Created: Wed, 29 Mar 2017, 10:24:00 EST by Catalyst Administrator
© 2014 RMIT Research Repository • Powered by Fez SoftwareContact us