Lift(数据挖掘)
机械
振动
雷诺方程
休克(循环)
方位(导航)
振幅
冲击波
推进
莫里森方程
瞬态(计算机编程)
海洋工程
结构工程
地质学
工程类
物理
雷诺数
声学
航空航天工程
计算机科学
阻力
光学
湍流
内科学
数据挖掘
操作系统
医学
天文
作者
Liang Peng,Xingyang Li,Feng Guo,Yuzhe Cao,Xiaohan Zhang,Fulin Jiang
标识
DOI:10.1016/j.triboint.2021.107332
摘要
The water-lubricated bearing in ship propulsion system is easily impacted by sea wave shock, which is a great threat to the smooth start-up of the bearing system. Therefore, in the present research, the Euler equations, average Reynolds equation, and sea wave shock function are combined together to build the start-up model of water-lubricated bearing. The influences of amplitude, direction, and entry time of sea wave shock on the start-up performance of bearing are studied. The result shows that the shaft has a strong instantaneous vibration under the influence of friction force at the initial start-up stage, and the shock load with appropriate direction and amplitude can suppress or even eliminate this vibration phenomenon. The earlier the shock enters the start-up process, the more serious asperity contact gets, and the worse the system’s stability becomes. The increase of the shock load amplitude and the advance of the shock load entry time can help the shaft rapidly lift off. This study can provide a reference for the smooth start-up of ship propulsion system in a sea wave environment.
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