Title: Free vibration and buckling analysis of natural fibre-based hybrid composite plates using finite element method

Authors: Dhaneshwar Prasad Sahu; Sukesh Chandra Mohanty

Addresses: Department of Mechanical Engineering, National Institute of Technology, Odisha (769008), India ' Department of Mechanical Engineering, National Institute of Technology, Odisha (769008), India

Abstract: The present study explores the fabrication and investigation of tensile properties of laminated composite structures made from synthetic fibres (carbon and basalt) and natural fibres (flax and hybrid abaca-sisal). Elastic properties of both fibre types were determined using uniaxial tensile testing on a universal testing machine, adhering to ISO 527-5 standards. Numerical simulations for free vibration and buckling analyses of the hybrid composites were conducted via finite element software ABAQUS, employing deformable 8-noded shell elements with reduced integration. The hybrid composite plates were modelled using first-order shear deformation theory (FSDT), and elastic properties derived from tensile tests were used in vibration analysis. Damping effects were excluded from the numerical analysis. The study also examined the influence of parameters like lamina schemes, ply orientations, aspect ratios, and boundary conditions on modal frequencies and buckling responses. Results indicate that hybridisation enhances natural frequency and critical buckling load, demonstrating potential applications in engineering.

Keywords: specific strength and stiffness; ISO 527-5 standards; shell element; first-order shear deformation theory.

DOI: 10.1504/IJSMSS.2024.143459

International Journal of Sustainable Materials and Structural Systems, 2024 Vol.6 No.2, pp.160 - 176

Received: 10 May 2023
Accepted: 14 Mar 2024
Published online: 20 Dec 2024 *

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