Title: Numerical parametric investigation of loss factor of laminated composites with interleaved viscoelastic layers

Authors: ShaoHui Zhang, HuaLing Chen, XiaoPeng Wang

Addresses: Institute of Vibration and Noise Control, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049 Shaanxi, People's Republic of China. ' Institute of Vibration and Noise Control, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049 Shaanxi, People's Republic of China. ' Institute of Vibration and Noise Control, School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, 710049 Shaanxi, People's Republic of China

Abstract: In this paper a detailed parametric study of loss factor of laminated composite beams with embedded viscoelastic layers has been performed using the finite-element-based modal strain energy method revised to deal with the frequency dependency of viscoelastic materials. The contribution of energy dissipation due to fiber-reinforced composites is also taken into account for a more accurate prediction of loss factor. The effects of different parameters such as ply orientations, location of damping layers and thickness of the laminates on the modal loss factor are investigated for both single damping layer and double damping layer composite beams.

Keywords: fibre-reinforced composites; viscoelastic materials; damping layers; laminate thickness; finite element method; FEM; loss factor; laminated composites; modal strain energy; energy dissipation; composite beams; vibration reduction; vibration damping; noise reduction; vehicle vibration.

DOI: 10.1504/IJVNV.2006.008527

International Journal of Vehicle Noise and Vibration, 2006 Vol.2 No.1, pp.62 - 74

Published online: 28 Dec 2005 *

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