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Structural Engineering and Mechanics
  Volume 66, Number 4, May25 2018, pages 495-504
DOI: http://dx.doi.org/10.12989/sem.2018.66.4.495
 


Propagation of elastic waves in thermally affected embedded carbon-nanotube-reinforced composite beams via various shear deformation plate theories
Farzad Ebrahimi and Pooya Rostami

 
Abstract
    The current study is dedicated to study the thermal effects of wave propagation in beams, reinforced by carbon nanotubes (CNT). Beams, made up of carbon nanotube reinforced composite (CNTRC) are the future materials in various high tech industries. Herein a Winkler elastic foundation is assumed in order to make the model more realistic. Mostly, CNTs are pervaded in cross section of beam, in various models. So, it is tried to use four of the most profitable reconstructions. The homogenization of elastic and thermal properties such as density, Yong\'s module, Poisson\'s ratio and shear module of CNTRC beam, had been done by the demotic rule of mixture to homogenize, which gives appropriate traits in such settlements. To make this investigation, a perfect one, various shear deformation theories had been utilized to show the applicability of this theories, in contrast to their theoretical face. The reigning equation had been derived by extended Hamilton principle and the culminant equation solved analytically by scattering relations for propagation of wave in solid bodies. Results had been verified by preceding studies. It is anticipated that current results can be applicable in future studies.
 
Key Words
    wave propagation; graphene; thermal effects; CNTRC; Winkler elastic foundation; rule of mixture; beam; CNT
 
Address
Farzad Ebrahimi and Pooya Rostami: Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran
 

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