Title: Free and forced vibration analysis of delaminated FRP composite plate with a circular hole

Authors: Venkatesan Moorthy; Karthikeyan Marappan

Addresses: School of Mechanical Engineering, SASTRA (Deemed to be University), Thanjavur, Tamil Nadu, India ' School of Mechanical Engineering, SASTRA (Deemed to be University), Thanjavur, Tamil Nadu, India

Abstract: In laminated composites made of fibre-reinforced polymers (FRP), the separation of layers, also known as delamination, is a common cause of failure. In this study, the free and forced vibrations of an FRP composite plate with a circular hole were affected by delamination. To solve the numerical method, the layerwise theory (LWT) using finite element (FEM) methods and simulated delamination using the 'constrained mode' was adopted. The results reveal that the magnitude of delamination has a considerable impact on the natural frequency, stress concentration, and impedance.

Keywords: composites; free and forced vibration; delamination; impedance; laminated plate.

DOI: 10.1504/IJVNV.2023.136068

International Journal of Vehicle Noise and Vibration, 2023 Vol.19 No.3/4, pp.203 - 211

Received: 03 Jun 2023
Accepted: 01 Aug 2023
Published online: 15 Jan 2024 *

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