Abstract
In the present paper, the damping study of composites is approached from the viewpoint of macromechanical analysis. Based on other researchers' works, two damping models are developed, i.e. the viscoelastic damping (VED) model, and the specific damping capacity (SDC) model. The present numerical results by the finite element method are compared with the other researchers' works, both on polymer-matrix and metal-matrix composites. Considerable agreement is obtained. Both models are valid in the prediction of modal dampings because there are no significant differences in the natural frequency, damping, and mode shapes between both models if the system is slightly damped. An investigation is made to show the parametric effects of side-to-thickness ratio, principal moduli ratio, the total number of layers, lamination arrangement, and boundary conditions.
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