Modal Analysis of Hybrid Laminated Composite Sandwich Plate

Abstract

This study investigates the modal analysis of hybrid laminated composite sandwich plate with a viscoelastic core. The laminated composite sandwich structures are being increasingly used in automotive, aerospace, marine and high end applications. Composite materials have unique properties like high strength to weight ratio, non-corrosive, good surface finish etc. Properties of composite material can be tailored as per requirement. The finite element model of hybrid laminated composite sandwich plate is developed by using ANSYS software. The developed finite element models are validated with the available literature. Various parametric studies are carried out in terms of natural frequencies, mode shapes and deflection of composite sandwich plates to describe effectiveness of hybrid laminated composite sandwich plate. The results suggest that the fiber angle orientation, stacking sequence of laminates and the boundary conditions are influences the natural frequencies and mode shapes of laminated composite sandwich plate. Also comparative studies are done in terms of natural frequencies in between glass fiber laminated composite sandwich plate and carbon fiber laminated composite sandwich plate.