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Steel and Composite Structures
  Volume 46, Number 5, March10 2023 , pages 637-647
DOI: https://doi.org/10.12989/scs.2023.46.5.637
 


Thermal nonlinear dynamic and stability of carbon nanotube-reinforced composite beams
M. Alimoradzadeh and Ş.D. Akbas

 
Abstract
    Nonlinear free vibration and stability responses of a carbon nanotube reinforced composite beam under temperature rising are investigated in this paper. The material of the beam is considered as a polymeric matrix by reinforced the single-walled carbon nanotubes according to different distributions with temperature-dependent physical properties. With using the Hamilton's principle, the governing nonlinear partial differential equation is derived based on the Euler-Bernoulli beam theory. In the nonlinear kinematic assumption, the Von Karman nonlinearity is used. The Galerkin's decomposition technique is utilized to discretize the governing nonlinear partial differential equation to nonlinear ordinary differential equation and then is solved by using of multiple time scale method. The critical buckling temperatures, the nonlinear natural frequencies and the nonlinear free response of the system is obtained. The effect of different patterns of reinforcement on the critical buckling temperature, nonlinear natural frequency, nonlinear free response and phase plane trajectory of the carbon nanotube reinforced composite beam investigated with temperature-dependent physical property.
 
Key Words
    carbon nanotubes; composite beams; nonlinear thermal vibration; thermal buckling
 
Address
M. Alimoradzadeh:Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran

S.D. Akbas:Department of Civil Engineering, Bursa Technical University, 16330, Bursa, Turkey
 

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