scholarly journals Effect of CNT volume fractions on nonlinear vibrations of PMMA/CNT composite plates: A multiscale simulation

2022 ◽  
Vol 170 ◽  
pp. 108513
Author(s):  
J.F. Wang ◽  
J.P. Yang ◽  
L.-h. Tam ◽  
W. Zhang
Keyword(s):  
Nonlinear Vibrations ◽  
Composite Plates ◽  
Multiscale Simulation ◽  
Volume Fractions

Nonlinear Vibrations of Plates: An Update of Recent Research Developments

1996 ◽  
Vol 49 (10S) ◽  
pp. S55-S62 ◽  
Author(s):  
M. Sathyamoorthy
Keyword(s):  
Nonlinear Vibrations ◽  
Laminated Composite ◽  
Composite Plates ◽  
Future Research ◽  
Research Directions ◽  
Inertia Effects ◽  
Vibration Behavior ◽  
Recent Developments ◽  
Complicating Factors ◽  
Future Research Directions

This paper comprises a survey on the nonlinear vibration analysis of plates, with emphasis on research carried out since 1987. Most of the research reviewed here deals with the effects of geometric nonlinearity on the vibration behavior of plates. Complicating factors such as material nonlinearity, geometric imperfections, transverse shear and rotatory inertia effects, and magnetic fields on the vibration behavior are included. Recent developments in the analytical and numerical methods of solution of isotropic, orthotropic as well as laminated, composite plates are presented. Experimental, analytical, and numerical investigations are included for all the cases reviewed and some general remarks are presented along with suggestions for future research directions.

Vibration Response Behaviour of Glass Fibre/Epoxy Laminates at Various Volume Fractions

2014 ◽  
Vol 695 ◽  
pp. 721-724 ◽  
Author(s):  
N.I.E. Farhana ◽  
M.S. Abdul Majid ◽  
M.P. Paulraj ◽  
E.A. Helmi
Keyword(s):  
Glass Fibre ◽  
Composite Plates ◽  
Vibration Response ◽  
Damping Factor ◽  
Vibration Signals ◽  
Moulding Process ◽  
Volume Fractions ◽  
Different Response ◽  
Signal Processing Methods ◽  
Non Destructive

The paper presents the vibration response investigation of glass fibre/epoxy composite plates of different volume fractions. The different in composition of glass fibre is expected to yield different response hence can be used to determine the properties of the material. The laminate samples were prepared by compressed moulding process at volume fractions of 35%, 40%, 45% and 50% with 5mm thickness. Vibration signals at different volume fractions were then measured and the natural frequencies and damping factor were obtained. Feature extraction algorithms with respect to time and frequency domain were developed by means of signal processing methods to classify the signals according to the property of the materials. That indicates the vibration signals obtained shows potential to be used as non-destructive means for detecting the laminates composition.

Active Damping of Nonlinear Vibrations of Functionally Graded Laminated Composite Plates using Vertically/Obliquely Reinforced 1-3 Piezoelectric Composite

2012 ◽  
Vol 134 (2) ◽  
Author(s):  
Satyajit Panda ◽  
M. C. Ray
Keyword(s):  
Nonlinear Vibrations ◽  
Composite Layer ◽  
Laminated Composite ◽  
Composite Plates ◽  
Functionally Graded ◽  
Fe Model ◽  
Geometrically Nonlinear ◽  
Thickness Direction ◽  
Laminated Composite Plates ◽  
Geometrically Nonlinear Vibrations

This paper deals with a study on the active constrained layer damping (ACLD) of geometrically nonlinear vibrations of functionally graded (FG) laminated composite plates. The constraining layer of the ACLD treatment is considered to be made of the vertically/obliquely reinforced 1-3 piezoelectric composites (PZCs). The substrate FG laminated composite plate is composed of generally orthotropic FG layers. The generally orthotropic FG layer is a fiber reinforced composite layer in which the fibers are longitudinally aligned in the plane parallel to the top and bottom surfaces of the layer and their orientation angle is assumed to vary in the thickness direction according to a simple power-law in order to make it as a graded layer only in the thickness direction. The constrained viscoelastic layer of the ACLD treatment is modeled by implementing the Golla-Hughes-McTavish (GHM) method. Based on the first order shear deformation theory, the finite element (FE) model is developed to model the open-loop and closed-loop nonlinear dynamics of the overall FG laminated composite plates integrated with a patch of such ACLD treatment. The analysis suggests the potential use of the ACLD treatment with its constraining layer made of the vertically/obliquely reinforced 1-3 PZC material for active control of geometrically nonlinear vibrations of FG laminated composite plates. The effect of piezoelectric fiber orientation in the active 1-3 PZC constraining layer on the damping characteristics of the overall FG laminated composite plates is also investigated.

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