Abstract
This paper presents the free vibration analysis of the sandwich plate composed of isotropic material and viscoelastic material. For this purpose, the parameter identification of the stress-strain relationship of a viscoelastic material is carried out first by using fractional derivative model, and then natural frequencies and specific damping capacities of the sandwich plates are obtained numerically by using the Ritz's method based on the Discrete-Layer Theory (DLT), Higher-order Shear Deformation Theory (HSDT) and Classical Lamination Theory (CLT). Finally, the experimental study is also carried out by using the experimental model analysis, and the applicability of the analytical models in the vibration analysis is discussed from the comparisons of numerical and experimental results.
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