A method based on the concept of Station Functions is pre¬sented for calculating the modes and the frequencies of nonuniform cantilever beams vibrating in torsion, bending, and coupled bending-torsion motion. The method combines some of the advan¬tages of the Rayleigh-Ritz and Stodola methods, in that a con¬tinuous loading function for the beam is used, with the advantages of the influence-coefficient method, in that the continuous load¬ing function is obtained in terms of the displacements at a finite number of stations along the beam.
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