### Coupling Mathematical Model of Marine Propulsion Shafting in Steady Operating State

WEN Xiaofei (温小飞), ZHOU Ruiping (周瑞平), YUAN Qiang (袁强), LEI Junsong (雷俊松)

1. (1. School of Port & Transportation Engineering, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China;
2. School of Energy & Power Engineering, Wuhan University of Technology, Wuhan 430063, China)
2. (1. School of Port & Transportation Engineering, Zhejiang Ocean University, Zhoushan 316022, Zhejiang, China;
2. School of Energy & Power Engineering, Wuhan University of Technology, Wuhan 430063, China)
• Online:2020-08-28 Published:2020-07-29
• Contact: WEN Xiaofei (温小飞) E-mail:wenxiaofei@zjou.edu.cn

Abstract: According to the analysis of the problems about the operation of marine propulsion shafting in steady
state, the geometric and mechanical coupling relationships between marine propulsion shafting and oil film of
bearings in two-dimensional space are established, and a coupling mathematical model of the marine propulsion
shafting in steady operating state is proposed. Then the simulation of a real ship is carried out, and the variation
laws of some special parameters such as bearing load and deflection are obtained. Finally, the results of simulation
are verified by experimental data of a real ship, which can provide the mathematical model and analysis method
for the research on the characteristics of ship propulsion shafting condition in steady state.

Key words: marine propulsion shafting| steady state| coupling model| numerical simulation

state, the geometric and mechanical coupling relationships between marine propulsion shafting and oil film of
bearings in two-dimensional space are established, and a coupling mathematical model of the marine propulsion
shafting in steady operating state is proposed. Then the simulation of a real ship is carried out, and the variation
laws of some special parameters such as bearing load and deflection are obtained. Finally, the results of simulation
are verified by experimental data of a real ship, which can provide the mathematical model and analysis method
for the research on the characteristics of ship propulsion shafting condition in steady state.

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