FREE-VIBRATION OF COMPOSITE LAMINATED CONICAL SHELLS

Using a particularly convenient coordinate system, a simple and exact solution is obtained directly for the Donnell-type governing equations of the free vibration of composite laminated conical shells, with orthotropic stretching-bending coupling. The solution is in the form of a power series, and its convergence condition is investigated. Numerical results, presented for the frequency parameters and the associated vibration wavenumbers of a series of conical shells under various boundary conditions and with different material coefficients, confirm the validity of the solution presented.