RESPONSE OF MULTILAYERED COMPOSITE LAMINATES TO DYNAMIC SURFACE LOADS

A theoretical investigation of the response of multilayered composite laminates to concentrated and distributed dynamic surface loads is car ried out. Each layer of the laminate is assumed to be transversely iso tropic and dissipative with arbitrarily oriented symmetry axis. The di ssipative property of the material is modeled approximately through th e introduction of a frequency-dependent damping function. A multiple t ransform technique is used to calculate the spectra and time histories of the displacements and stresses produced by a variety of dynamic lo ads, and the quantitative features of the waves produced in the lamina te are determined. The methodology developed in this work is expected to be useful in the prediction of the response of composite laminates to impact loads and also in the characterization of acoustic emission (AE) sources in these materials under static and dynamic loads. Copyri ght (C) 1996 Elsevier Science Limited