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.

在本文中，研究了具有可调电流变（ER）流体芯的夹层复合梁的波传播。夹层复合梁由三层组成，包括基础层，ER流体芯和限制层。ER流体核心嵌入在门的基本层和限制层内。上层和下层由弹性材料构成。汉密尔顿原理被用来推导运动的控制方程。通过使用解析解，可以通过解决特征值问题来收集波频率和相速度。此外，研究了电场，磁芯与顶层的厚度比以及ER磁芯的厚度等不同参数对波色散特性的影响。