Free Vibration Characteristics of CFRP Laminated Composite Plate made by Prepreg Patches

2019 ◽  
Vol 2019 (0) ◽  
pp. 101
Author(s):  
Yoshiki OHTA ◽  
Tohru YAMAGISHI ◽  
Syuichiro SENO
Keyword(s):  
Free Vibration ◽  
Composite Plate ◽  
Laminated Composite ◽  
Vibration Characteristics ◽  
Laminated Composite Plate

Second-order statistics of large-amplitude free vibration of a random composite plate

2009 ◽  
Vol 223 (8) ◽  
pp. 1099-1113 ◽  
Author(s):  
P Dash ◽  
B N Singh
Keyword(s):  
Free Vibration ◽  
Composite Plate ◽  
Shear Deformation Theory ◽  
Laminated Composite ◽  
Element Model ◽  
Perturbation Approach ◽  
Deterministic System ◽  
Laminated Composite Plate ◽  
System Equation ◽  
Non Linear

This article addresses the non-linear free vibration stochastic characteristic of a laminated composite plate having random material properties. The transverse shear effects have been included in the system equation in the frame work of higher-order shear deformation theory. The analysis uses Green—Lagrange non-linear strain—displacement relationship to model geometric non-linearity. Direct iteration approach is used to handle deterministic system non-linearity and perturbation approach is presented to handle the randomness in the system properties. Mean and variance of the random natural frequencies have been obtained by employing a C0 isoparametric non-linear finite-element model. Comparisons with the published results show the accuracy of the proposed procedure. A few results covering various features have been presented for a laminated composite plate with different boundary conditions.

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