Resonance in functionally graded nanocomposite cylinders reinforced by wavy carbon nanotube

In this article, free vibration and resonance of finite length functionally graded (FG) nanocomposite cylinders are investigated by a mesh‐free method. These cylinders are reinforced by wavy single‐walled carbon nanotubes (SWCNTs) and subjected to a periodic internal pressure. Three linear types of...

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Bibliographic Details
Published in:Polymer composites 2017-09, Vol.38 (S1), p.E542-E552
Main Authors: Moradi‐Dastjerdi, Rasool, Payganeh, Gholamhassan, Tajdari, Mehdi
Format: Article
Language:English
Subjects:
Aspect ratio
Axisymmetric bodies
Boundary conditions
Carbon
Computer simulation
Cylinders
Finite element method
Free vibration
Functionally gradient materials
Internal pressure
Mechanical properties
Meshless methods
Nanocomposites
Nanotubes
Polymers
Shape functions
Single wall carbon nanotubes
Stress concentration
Waviness
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Summary:In this article, free vibration and resonance of finite length functionally graded (FG) nanocomposite cylinders are investigated by a mesh‐free method. These cylinders are reinforced by wavy single‐walled carbon nanotubes (SWCNTs) and subjected to a periodic internal pressure. Three linear types of FG distributions and a uniform distribution of wavy carbon nanotubes (CNTs) are considered along the radial direction of axisymmetric cylinder. The mechanical properties are simulated using a micromechanical model in volume fraction form. In the mesh‐free analysis, moving least squares shape functions are used for approximation of displacement field in the weak form of motion equation and the transformation method is used for imposition of essential boundary conditions. Effects of geometric dimensions, boundary conditions and also, waviness index, aspect ratio, volume fraction, and distribution pattern of CNTs are investigated on the natural frequencies and resonance behaviors of FG carbon nanotube reinforced composite (CNTRC) cylinders. It is observed that CNT waviness has a significant effect on the vibrational behavior of the CNTRC cylinders. POLYM. COMPOS., 38:E542–E552, 2017. © 2016 Society of Plastics Engineers
ISSN:0272-8397
1548-0569
DOI:10.1002/pc.24045