Damping performance of co-cured viscoelastic composite beam structure

doi:10.19936/j.cnki.2096-8000.20220128.006

Abstract

Abstract: In order to obtain the damping performance of co-cured viscoelastic composite beam structure, a dynamic analysis model of the structure was established. Based on the complex modulus theory and the Rayleigh-Ritz method, the vibration differential equation was derived, and the equation was solved. The calculation results were compared with data from the published literature. The validated model is used to analyze the influence of the geometric and material parameters of the structure on the dynamic characteristics of viscoelastic composite beam structure. The results show that placing the damping membrane on the midplane of the viscoelastic composite beam structure can obtain ideal damping performance. It is proved that shortening the length of the beam and increasing the thickness of the damping layer can improve the damping performance of the structure.

Key words: composite, loss factor, damping performance, Rayleigh-Ritz

CLC Number:

TB332

ZHU Xiao-li, WANG Shao-qing. Damping performance of co-cured viscoelastic composite beam structure[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(1): 42-45.

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