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  4. Isogeometric Kirchhoff-Love shell patches in free and forced vibration of sinusoidally corrugated FG carbon nanotube-reinforced composite panels
 
research article

Isogeometric Kirchhoff-Love shell patches in free and forced vibration of sinusoidally corrugated FG carbon nanotube-reinforced composite panels

Mohammadi, H.
•
Setoodeh, A. R.
•
Vassilopoulos, A. P.  
February 1, 2022
Thin-Walled Structures

Application of the isogeometric method is illustrated for free and forced vibration analyzes of sinusoidally corrugated functionally graded carbon nanotube reinforced composite (FG-CNTRC) thin panels. These panels can be used as a potential structure for morphing skin applications. The nanocomposite panel is fabricated from a polymeric matrix which is reinforced by carbon nanotubes (CNTs). The volume fraction of CNTs varies based on the four models of functionally graded (FG). The Kirchhoff-Love (KL) shell theory is employed to model the kinematic behavior of sinusoidally corrugated panels (SCPs) with a variable radius of curvature. The multiple patches approach is approved to model the structure. In this model, the bending strip method (BSM) is applied at the intersection of the patches. The temporal response of the panel under different transverse dynamical loadings is predicted via the Newmark time-marching scheme. A detailed comparison study is performed to demonstrate the validity and efficiency of the proposed isogeometric analysis (IGA). The numerical results demonstrate that the computationally effective IGA can provide accurate results due to the capability of precisely approximating any segments of the corrugation. Furthermore, the effects of different configurations of CNTs and various geometrical parameters such as corrugation amplitude, number of corrugation units and panel aspect ratio are presented on the natural frequency and dynamic response of the sinusoidally corrugated FG-CNTRC panels.

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Type
research article
DOI
10.1016/j.tws.2021.108707
Web of Science ID

WOS:000755812700032

Author(s)
Mohammadi, H.
Setoodeh, A. R.
Vassilopoulos, A. P.  
Date Issued

2022-02-01

Publisher

ELSEVIER SCI LTD

Published in
Thin-Walled Structures
Volume

171

Article Number

108707

Subjects

Engineering, Civil

•

Engineering, Mechanical

•

Mechanics

•

Engineering

•

isogeometric analysis

•

vibration analysis

•

sinusoidally corrugated panel

•

carbon nanotubes

•

bending strip method

•

morphing skins

•

transformed differential quadrature

•

equivalent models

•

plates

•

cores

•

nurbs

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
CCLAB  
Available on Infoscience
March 14, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/186337
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