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In order to investigate the influence of random uncertainty on the vibration characteristics of the ship shafting system, a nonparametric model that adds the data uncertainty and model uncertainty was constructed, and the system’s frequency response function and vibration response were calculated. The results show that the random uncertainty will make the frequency response function and vibration characteristics of the ship shafting system fluctuate. With the increase of random uncertainty, the degree of fluctuation of the system gradually strengthens. The study demonstrates that it is essential to consider the influence of random uncertainty during ship shafting designing and vibration calculation.

Investigation on vibration characteristics of ship shafting under uncertainty