On the vibrations of the Electrorheological sandwich disk with composite face sheets considering pre and post-yield regions

Abstract

Electrorheological (ER) is a type of material that can change its state from liquid to solid by being under an electrical field, bringing much attention from researchers. So, in this article, the vibration of a three-layered disk made of an ER core and two graphene nanoplatelets reinforced composite (GPLRC) face sheets is carried out. The shear strain and stress of ER layer were obtained in the pre- and post-yield state. First- and third-order shear deformation theories (FSDT and TSDT) are utilized to model the face sheets and core of the structure. By using HDQM – hyperbolic differential quadrature method – the results are acquired. By employing other published studies, the validation investigation is carried out. Lastly, the influence of such parameters as graphene nanoplatelets (GPLs) distribution, foundation parameters, open-angle of the disk, the thickness of different layers, inner in addition to the outer radius of the disk, and GPLs’ weight fraction on the vibrational behavior of the system is investigated.