Abstract
Approximate closed-form expressions are developed to predict the vibration of rectangular angle-ply antisymmetric laminated composite plates. The set of partial differential equations is first represented in abstract form and then converted into discrete form using an Ritz approach. Sensitivity derivatives are determined which are used to provide a Maclaurin series representation of the laminate's frequency. A comparison of numerical results calculated for various boundary conditions using both the derived formula and the Rayleigh-Ritz method validates the accuracy of the approximate formula.
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