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Vibration Characteristics Analysis of the Propeller Shaft in a Deep-Sea Thruster

Author(s)

Xiaoyu Zhao, Shengguo Liang, Kai Chen*

Affiliation(s)

Tianjin Hanhai Lanfan Marine Technology Co., Ltd., Tianjin, China *Corresponding Author

Abstract

To gain the vibration characteristics of the propeller shaft of a certain type of deep-sea thruster in an oil medium and to understand the effect of oil viscosity on the structural modes, the simulation models of the propeller shaft and the oil are established separately. In addition to the dry modal vibration characteristics calculation of the propeller shaft on the ANSYS Workbench platform, the wet modal vibration characteristics calculation of the propeller shaft under the influence of oil viscosity is also carried out by using the fluid-structure interaction method. Through analysis of the simulation results, it is concluded that the oil has an obvious suppression effect on the vibration of the propeller shaft. In addition, by changing the viscosity of the oil, various wet modal vibration characteristics are obtained. The analysis results indicate that the greater the viscosity of the oil, the more prominent the suppression effect of the oil on the vibration of the propeller shaft is. This provides an important reference for the follow-up structural design of the propeller shaft and the selection of the oil type.

Keywords

Deep-Sea Thruster; Modal Analysis; Natural Frequency; Fluid-Structure Interaction

References

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