Investigation on Dynamic Behaviors of Ship Propulsion Shafting with Misalignment Based on Stochastic Uncertainty Models

To investigate the effect of stochastic uncertainty on the dynamic behaviors of ship propulsion shafting with misalignment, a stochastic uncertainty model of ship shafting is established based on nonparametric theory and stochastic excitation. Numerical simulation and experimental verification of th...

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Bibliographic Details
Published in:Journal of marine science and engineering 2024-11, Vol.12 (11), p.1927
Main Authors: Xing, Pengfei, Zhao, Feng, He, Xiaoliang, Li, Guobin
Format: Article
Language:English
Subjects:
Analysis
dynamic behaviors
Dynamical systems
Investigations
Marine propulsion
Mathematical models
Misalignment
Navigation
nonparametric theory
Numerical analysis
Numerical models
ship propulsion shafting
Simulation methods
stochastic excitation
stochastic uncertainty
Stochasticity
Uncertainty
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Summary:To investigate the effect of stochastic uncertainty on the dynamic behaviors of ship propulsion shafting with misalignment, a stochastic uncertainty model of ship shafting is established based on nonparametric theory and stochastic excitation. Numerical simulation and experimental verification of the dynamic behaviors are carried out using a ship shafting test bench. The results indicate that stochastic uncertainty has a significant effect on the dynamic behaviors of shafting with misalignment. With an increase in stochastic uncertainty, the fractional frequency appears in the spectrum, and the axis trajectory becomes more complex and gradually deviates from the center orbit. Therefore, to ensure the safe navigation of ships, it is necessary to consider the stochastic uncertainty in dynamic research on the misalignment of shafting.
ISSN:2077-1312
2077-1312
DOI:10.3390/jmse12111927