Free vibration and buckling analysis of sandwich beams with functionally graded carbon nanotube-reinforced composite face sheets

Wu, H, Kitipornchai, S and Yang, J 2015, 'Free vibration and buckling analysis of sandwich beams with functionally graded carbon nanotube-reinforced composite face sheets', International Journal of Structural Stability and Dynamics, vol. 15, no. 7, 1540011, pp. 1-17.


Document type: Journal Article
Collection: Journal Articles

Title Free vibration and buckling analysis of sandwich beams with functionally graded carbon nanotube-reinforced composite face sheets
Author(s) Wu, H
Kitipornchai, S
Yang, J
Year 2015
Journal name International Journal of Structural Stability and Dynamics
Volume number 15
Issue number 7
Article Number 1540011
Start page 1
End page 17
Total pages 17
Publisher World Scientific Publishing Co. Pte. Ltd
Abstract This paper investigates the free vibration and elastic buckling of sandwich beams with a stiff core and functionally graded carbon nanotube reinforced composite (FG-CNTRC) face sheets within the framework of Timoshenko beam theory. The material properties of FG-CNTRCs are assumed to vary in the thickness direction, and are estimated through a micromechanical model. The governing equations and boundary conditions are derived by using Hamilton's principle and discretized by employing the differential quadrature (DQ) method to obtain the natural frequency and critical buckling load of the sandwich beam. A detailed parametric study is conducted to study the effects of carbon nanotube volume fraction, core-to-face sheet thickness ratio, slenderness ratio, and end supports on the free vibration characteristics and buckling behavior of sandwich beams with FG-CNTRC face sheets. The vibration behavior of the sandwich beam under an initial axial force is also discussed. Numerical results for sandwich beams with uniformly distributed carbon nanotube-reinforced composite (UD-CNTRC) face sheets are also provided for comparison.
Subject Civil Engineering not elsewhere classified
Mechanical Engineering not elsewhere classified
Keyword(s) buckling
FG-CNTRC
Free vibration
sandwich beam
DOI - identifier 10.1142/S0219455415400118
Copyright notice © 2015 World Scientific Publishing Company
ISSN 0219-4554
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