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In this paper, the bending and free flexural vibration behaviour of sandwichplates with carbon nanotube (CNT) reinforced facesheets are investigated usingQUAD-8 shear flexible element developed based on higher-order structuraltheory. This theory accounts for the realistic variation of the displacementsthrough the thickness, and the possible discontinuity in slope at theinterface, and the thickness stretch affecting the transverse deflection. Thein-plane and rotary inertia terms are considered in the formulation. Thegoverning equations obtained using Lagrange's equation of motions are solvedfor static and dynamic analyses considering a sandwich plate with homogeneouscore and CNT reinforced face sheets. The accuracy of the present formulation istested considering the problems for which solutions are available. A detailednumerical study is carried out based on various higher-order models deducedfrom the present theory to examine the influence of the volume fraction of theCNT, core-to-face sheet thickness and the plate thickness ratio on theglobal/local response of different sandwich plates.

Application of higher-order structural theory to bending and free vibration analysis of sandwich plates with CNT reinforced composite facesheets