Free Vibration Study of Sandwich Plate With Different Boundary Conditions

Abstract

Vibration is a most important parameter for machine element and engineering structure. Control the vibration of structures is one of the main areas of investigation for the researchers in the modern world. Present work is focused on the analysis of free vibration of the sandwich plate with viscoelastic core under different boundary conditions. To reduce the vibration damper has been used. The viscoelastic material is used as the core of the plate due to its good energy absorbing capacity. The material properties especially silicon rubber polymer for the core are used to show the parametric effect of core thickness ratio, aspect ratio, and length to thickness ratio vs. natural frequency. The experiment has been carried out by considering galvanised steel as face material and silicone rubber polynomial as the core material of the sandwich plate. The specimen is tested under different boundary condition (fixed-fixed, cantilever). Its result is verified in Ansys Workbench 15.0 software package. All the Ansys and experimental result are taken for predicting the natural frequency of the plate in a constant core thickness ratio with the help of AI technique. The analysis concludes the variation of the geometrical parameter with different boundary conditions on the natural frequency. The simulated, AI technique and experiment results show good agreement with each other.