Free vibration analysis of thick viscoelastic composite plates on visco-Pasternak foundation using higher-order theory

2017 ◽  
Vol 182 ◽  
pp. 25-35 ◽  
Author(s):  
H.A. Zamani ◽  
M.M. Aghdam ◽  
M. Sadighi
Keyword(s):  
Free Vibration ◽  
Vibration Analysis ◽  
Free Vibration Analysis ◽  
Composite Plates ◽  
Order Theory ◽  
Higher Order ◽  
Pasternak Foundation ◽  
Viscoelastic Composite ◽  
Higher Order Theory

Free Vibration Analysis of Composite Sandwich Plate with Viscoelastic Core

2011 ◽  
Vol 471-472 ◽  
pp. 658-663 ◽  
Author(s):  
Soroush Sadeghnejad Limouei ◽  
Mojtaba Sadighi ◽  
Abdolreza Ohadi
Keyword(s):  
Free Vibration ◽  
Free Vibration Analysis ◽  
Composite Plates ◽  
Order Theory ◽  
Higher Order ◽  
Response Analysis ◽  
Rotational Inertia ◽  
Composite Sandwich ◽  
Viscoelastic Core ◽  
Higher Order Theory

New Reddy-type elements based on Reddy’s higher-order theory are used in the analysis of composite sandwich plates with viscoelastic core, which is achieved by considering independent transverse displacements on two faces and linear variations through depth of plate core. In addition, Young modulus, rotational inertia, and kinetic energy of core are considered and core is assumed as 3D elastic structure with the properties of an orthotropic viscoelastic material. To improve the Reddy’s higher-order theory, a rectangular element with four nodes, which each node has seven degrees of freedom, is proposed. Hamilton’s principle has been used to obtain the equations of motion. A finite element code for structural response analysis of the free vibration is developed. The obtained results are compared with existence researches. The influence of material properties, lamination schemes, and fiber angle on natural frequencies of composite plates are investigated.

Free vibration analysis of composite plates by higher-order 1D dynamic stiffness elements and experiments

2014 ◽  
Vol 118 ◽  
pp. 654-663 ◽  
Author(s):  
A. Pagani ◽  
E. Carrera ◽  
J.R. Banerjee ◽  
P.H. Cabral ◽  
G. Caprio ◽  
...  
Keyword(s):  
Free Vibration ◽  
Vibration Analysis ◽  
Dynamic Stiffness ◽  
Free Vibration Analysis ◽  
Composite Plates ◽  
Higher Order
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