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Wave propagation analysis of electro-rheological fluid-filled sandwich composite beam

Authors: 

Ali Shariati, S. Sedighi Bayrami, Farzad Ebrahimi, Ali Toghroli

Source title: 
Mechanics Based Design of Structures and Machines, 2020 (ISI)
Academic year of acceptance: 
2020-2021
Abstract: 

In this article, wave propagation of the sandwich composite beam with tunable electro-rheological (ER) fluid core is investigated. The sandwich composite beam is made of three layers consisting of the basic layer, ER fluid core, and the limiter layer. ER fluid core embedded withindoors the basic and limiter layers. The upper and lower layers are constructed of the elastic materials. Hamilton’s principle is utilized for deriving the governing equations of motion. Using an analytical solution, the wave frequency and the phase velocity can be gathered by solving eigenvalue problem. Moreover, the effect of different parameters such as electric field, core-to-top layer thickness ratio, and thickness of ER core is investigated on the wave dispersion characteristics.