Dynamic analyses of composite corrugated sandwich plates filled with magnetorheological elastomer resting on elastic foundation

Abstract

The main barrier to the application of corrugated structures in vibration suppression is their low loss factor. The use of magnetorheological elastomer (MRE) as a novel type of smart material has the potential to improve the energy dissipation capacity of the corrugated structure. In this study, the dynamic behavior of the corrugated composite sandwich plate filled with MRE resting on elastic foundations is investigated. The equivalent model of the MRE-filled corrugated structure is obtained by employing the representative volume element (RVE). Then, the governing motion equations of the sandwich plate are derived via the first-order shear deformation theory (FSDT). Based on the modified Fourier series and the Rayleigh-Ritz method, the energy functions of the sandwich plate are solved. In this work, the analysis of geometric parameters, loading type, and magnetic field on the dynamic behavior of the corrugated sandwich is conducted. Numerical results show that increasing the magnetic field intensity, stiffness of boundary, and elastic foundation improves the dynamic performance of the structure. This reveals that the response behavior of the structure is significantly affected by the magnetic field intensity, as well as the stiffnesses of the boundary and elastic foundation.