Abstract
The problem of torsional vibrations of propeller shaft lines is considered in the work. A two-stage rod model with distributed parameters has been adopted for the study of dynamic processes in contrast to the traditional method based on discrete masses. The active load on the engine side, as in the classical approach, is approximated by the partial sum of the Fourier series. The comparison of the calculation results according to the proposed model with the results known in the literature has been performed. It is established that both calculation methods give excessive values of forces and deformations in resonance with harmonics, for which the phase component is a multiple of the engine cycle.
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