Abstract No. C171116-060
Author name(s): Liang LIU1, Yujia TANG2, Yichi XU1
Company: 1. Marine Design & Research Institute of China, China; 2. Shanghai Haixun Mechanical and Electronic Engineering Company Ltd., China
At present, the exhaust pipe of the diesel engine onboard is too long, too many elbow bends and too much pipAlong with the development of large ships, ship propulsion systems become to work overloaded, so the size of the propulsion shaft and propeller weight increase, leading to the increase of pressure on the tail tube bearing end. Thus the ¡°edge effect¡± appears and makes the contact pressure between the bearing and shaft distribution uneven, which often result in the serious wear and vibration that influences the service life, safety and reliability of the bearing. The paper presents the application of a new type of ship shafting bearing ? damping tail bearing. It¡¯s produced by adding damping layer on the outer surface of the steel sleeve to reduce the ¡°edge effect¡± of tail bearing, improve the contact pressure distribution of tail bearing, screen new bearing material, extend the service life and reduce the shaft vibration level. This paper applies the finite element method to analyze and compare damping tail bearings and ordinary ones. The results have shown that the damping tail bearing can enlarge the contact area between stern shaft and tail bearing and make the contact pressure distribution more uniform, comparing with the ordinary tail bearing.
KEY WORDS: damping tail bearing; contact pressure; finite element
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