Proceedings ArticleDOI
Damping of filament wound composite cylinders
TLDR
In this paper, graphite epoxy filament wound composite tubes were fabricated both with and without an imbedded layer of rubber, dynamically tested, and analyzed to investigate their damping characteristics.Abstract:
Graphite epoxy filament wound composite tubes were fabricated both with and without an imbedded layer of rubber, dynamically tested, and analyzed to investigate their damping characteristics. The filament winding process used IM-6 graphite fibers with an anhydride resin system, wet winding over an aluminum mandrel, and an oven cure in a rotisserie. Four different configurations were manufactured: a control configuration, one with an added layer of rubber, one using a modified resin system, and one with both an added layer of rubber and a modified resin system. Two independent modal tests were conducted. The data indicated that the mode shapes as well as the frequencies changed with the addition of a layer of rubber. The constrained layer damping with rubber dramatically increased the modal damping coefficients. Mode shapes from an FEM analysis of the undamped tube were correlated with the measured mode shapes. About half of the first thirteen computed mode shapes correlated with measured mode shapes. (Author)read more
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Journal ArticleDOI
Effects of Interply Damping Layers on the Dynamic Characteristics of Composite Plates
TL;DR: In this paper, the effects of aspect ratio, damping layer thickness, and fiber volume ratio on static and dynamic characteristics of composite laminates are also investigated, in connection with a semianalytical method for predicting the modal damping in simply supported specialty composite plates.
Journal ArticleDOI
Computational simulation of damping in composite structures
TL;DR: In this article, a computational methodology is developed for the prediction of passive damping in composite structures, which involves multiple levels of damping modeling by integrating micromechanics, laminate, and structural damping theories.
Journal ArticleDOI
Analytical and Experimental Investigations of Prestressed Laminated Composite Beams with Constrained Viscoelastic Damping Layer
TL;DR: In this article, the damping characteristics of prestressed composite beams with con strained viscoelastic damping layers on one surface of the beam are investigated both ana lytically and experimentally.
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