Research on Vibration and Noise Control Technology of Propeller-Shaft-Hull Coupled System

In order to improve the comfort of the ship and reduce interference with the hull and measurement equipment, the design and optimization of low noise ships have important engineering significance. Broadband pulsating propulsion force generated by the propeller is a major source of excitation for ship vibration. The problem of ship vibration and radiation noise caused by the excitation force of the propeller through the propulsion shaft system and bearing support needs to comprehensively consider the coupled characteristics of the propeller-shaft system foundation. The paper analyses the vibration transmission mechanism of coupled system, and provide a theoretical basis for effectively controlling the vibration and sound radiation of the ship. Therefore, it is crucial to conduct research on vibration and noise control technology caused by propeller-shaft-hull coupled system.