Research on models and methods for low-noise design of marine gearing

Noise and vibration are crucial factors affecting the cabin comfort and acoustic stealth of ships. Reducing noise is an urgent but a very difficult task in marine gearing because of its feature of heavy loading under high gear pitch line speed. In this paper, main transmission configurations used in marine gearing are summarized first. Then, the models and methods for low-noise design of marine gearing are reviewed and described, including gear system dynamic analysis, gearbox vibration and noise analysis, coupled vibration and power flow analysis, and control methods for vibration and noise. Finally, according to the requirement of development trend in more comfortable ships, the key research aspects to achieve lower noise are outlined for the design of marine gearing.