Acoustic fluid–structure study of 2D cavity with composite curved flexible walls using graphene platelets reinforcement by higher-order finite element approach

In the present study, acousto-vibration analysis of 2D fluid-filled cavities/tanks having flat and curved flexible walls is made using a trigonometric function based shear deformable theory Helmholtz wave model for fluid domain. The governing equation formed here solved through higher-order finite element approach. are modeled by C1 continuous 3-noded beam idealized an eight-noded quadrilateral element. Structural coupled frequencies evaluated cavities with rigid/flexible vertical along flat/curved on top. sound pressure level also predicted in domain due to steady-state mechanical harmonic load top cavity. This investigation conducted metallic then extended graphene platelets reinforced effect degree fluid–structure coupling examined assuming different domains. Considering wide range cavity geometry material parameters such as thickness ratio, angle, graded porosity platelets, coefficient, loading GPL, medium, comprehensive depicted highlight their impacts vibro-acoustic nature cavities. It observed that dynamic characteristics rigid wall significantly from each other.