A damping analysis of composite laminates using the closed form expression for the basic damping of Poisson's ratio

摘要

Various methods have been presented to obtain the effective damping of a symmetric laminated composite. In this paper, modified classical lamination theory based upon the elastic-viscoelastic correspondence principle was utilized by developing the basic damping of Poisson's ratio for accurately predicting the damping of laminated composite beams. The analysis involves an extension of the elastic-viscoelastic approach. Furthermore, Ni and Adams' theory was used for verifying the modified classical lamination theory. Six typical laminated composites with [±θ]_s,[0/θ]_s, [0/±θ]_s, [0/± θ/90]_s, [90/±θ/0]_s, [0/90±θ]_s and [90/0±θ]_s, stacking sequences were employed for this study. Numerical results have shown that damping values were in some difference among prediction methods over the particualr range of fiber orientation.