EFFECT OF DAMPING LAYER THICKNESS ON DAMPING STRUCTURE LOSS FACTOR OF EMBEDDED CO-CURED COMPOSITES

Abstract

Abstract: The strain energy of individual stress components is studied using Ritz method, and the loss factor of the embedded co-cured composite damping structure is calculated. The law of loss factor variation with the change of the damping layer thickness is obtained. The results show that when the total thickness of the thin plate is constant and the thickness of the damping layer increases from 2 mm to 5.5 mm, the loss factor increases with the increase of the damping layer thickness. When the damping layer is thick, the loss factor is no longer sensitive to the change of the thickness of the damping layer. When the thickness of the composite layer is constant, the loss factor increases with the increase of the thickness of the damping layer. When the thickness of the damping layer is thick, the thickness of the damping layer has little effect on the modal loss factor. Compared with the constant thickness of the composite layer, when the total thickness of the thin plate is constant, the thicker damping layer has a smaller influence on the loss factor.

Key words: composite material, viscoelastic materials, co-curing, loss factor

CLC Number:

TB332

WANG Shao-qing, LIANG Sen, Qiao Yan-mei, LIU Bing-guo. EFFECT OF DAMPING LAYER THICKNESS ON DAMPING STRUCTURE LOSS FACTOR OF EMBEDDED CO-CURED COMPOSITES[J]. Fiber Reinforced Plastics/Composites, 2018, 0(8): 19-24.

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