Journal ArticleDOI
Critical speed and free vibration analysis of spinning 3D single-walled carbon nanotubes resting on elastic foundations
TLDR
In this paper, the influence of critical speed on the free vibration behavior of spinning 3D single-walled carbon nanotubes (SWCNT) is investigated using modified couple stress theory (MCST).Abstract:
In this article, the influences of critical speed on the free vibration behavior of spinning 3D single-walled carbon nanotubes (SWCNT) are investigated using modified couple stress theory (MCST). Moreover, the surrounding elastic medium of SWCNT has been considered as a model of Winkler, characterized by the spring. Taking into consideration the first-order shear deformation theory (FSDT), the rotating SWCNT is modeled and its equations of motion are derived using the Hamilton principle. The formulations include Coriolis, centrifugal and initial hoop tension effects due to rotation of the SWCNT. The accuracy of the presented model is validated by some cases in the literature. The novelty of this study is considering the effects of rotation and MCST, in addition to considering the various boundary conditions of SWCNT. The generalized differential quadrature method (GDQM) is used to discretize the model and to approximate the equation of motion. Then investigation has been made on critical speed and natural frequency of the rotating SWCNT due to the influence of initial hoop tension, material length scale parameter, constant of spring, frequency mode number, angular velocity, length-to-radius ratio, radius-to-thickness ratio and boundary conditions.read more
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On modeling of wave propagation in a thermally affected GNP-reinforced imperfect nanocomposite shell
TL;DR: Wave propagation-thermal characteristics of a size-dependent graphene nanoplatelet-reinforced composite (GNPRC) porous cylindrical nanoshell in thermal environment are investigated and show that by increasing the thickness, the effect of porosity on the phase velocity decreases.
Journal ArticleDOI
Multilayer GPLRC composite cylindrical nanoshell using modified strain gradient theory
Zanyar Esmailpoor Hajilak,Johar Pourghader,Davoud Hashemabadi,Farzaneh Sharifi Bagh,Mostafa Habibi,Hamed Safarpour +5 more
TL;DR: In this article, the influence of modified strain gradient theory (MSGT) on buckling, free and forced vibration characteristics of the composite cylindrical nanoshell reinforced with graphene nan...
Journal ArticleDOI
Free vibration analysis of an electro-elastic GPLRC cylindrical shell surrounded by viscoelastic foundation using modified length-couple stress parameter
Aria Ghabussi,Negin Ashrafi,Aghil Shavalipour,Abolfazl Hosseinpour,Mostafa Habibi,Hossein Moayedi,Behzad Babaei,Hamed Safarpour +7 more
TL;DR: In this article, a composite material with graphene-reinforcement has obtained commercially notices in promoted engineering applications, and it has been used in a number of process manufacturing applications, such as:
Journal ArticleDOI
Stability analysis of an electrically cylindrical nanoshell reinforced with graphene nanoplatelets
TL;DR: In this article, the critical voltage and frequency characteristics of a graphene nanoplatelets (GNP) composite cylindrical nanoshell coupled with the piezoelectric actuator (PIAC) are investigated.
Journal ArticleDOI
A size-dependent exact theory for thermal buckling, free and forced vibration analysis of temperature dependent FG multilayer GPLRC composite nanostructures restring on elastic foundation
TL;DR: In this paper, the effects of FG-GRCs and thermal in addition of size effect on resonance frequencies, thermal buckling and dynamic deflections of the FG-graphene-reinforced composites were analyzed using modified couple stress parameter.
References
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Water conduction through the hydrophobic channel of a carbon nanotube
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Couple stress based strain gradient theory for elasticity
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TL;DR: HAL as discussed by the authors is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not, which may come from teaching and research institutions in France or abroad, or from public or private research centers.
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