A Research on the Influence of Vessel-Propeller Coupling Effect to Shaft’s Lateral Vibration

Abstract:

The aft part of large scale vessel propulsion shaft is a cantilever with a propeller. As the shaft doing the lateral vibration, the trail of propeller shaft center-line, which appears together with the movement, is the cone surface with the shaft center as the symmetrical axis, at the same time the propeller will vibrate with the shaft. In order to investigate the influence of propeller effect to shaft lateral vibration, the main work in the paper includes modeling the finite element of a large scale vessel propulsion shaft, studying the factors of water mass adhered to propeller, pin softening and gyroscopic moment to the shaft lateral vibration. The calculation shows that: if the propeller's gyroscopic moment is positive, the free frequency of shaft will increase, while added water mass and spin softening will obviously decrease the free vibration frequency of shaft.

• Periodical: Applied Mechanics and Materials (Volumes 226-228)
• Pages: 106-112
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.226-228.106
• Online since: November 2012
• Authors: Jun Chao Zhu, Han Hua Zhu, Xin Ping Yan, Ping Jiang
• Keywords: Adhered Water Mass, Gyroscopic Effect, Lateral Vibration, Propulsion Shaft of Vessel, Spin Softening

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