水润滑橡胶尾轴承是潜艇等水下航行器推进系统的重要支撑部件，其在低速重载工况下辐射的摩擦噪声严重影响水下航行器的隐蔽性能和生存能力。橡胶尾轴承摩擦界面的粘-滑行为是产生摩擦噪声的主要原因之一。申请项目聚焦于水润滑橡胶尾轴承的粘-滑行为和摩擦噪声行为研究，设计研发实时监测橡胶尾轴承摩擦界面的粘-滑行为和摩擦噪声行为模拟实验台；进行低速重载工况下的模拟实验，探讨橡胶尾轴承粘附摩擦力的形成和粘-滑位移的特征，揭示粘-滑行为机理；实时采集摩擦振动和摩擦噪声信号，结合流固耦合数值计算，寻找水润滑橡胶尾轴承的关键振动和摩擦噪声特征；研究粘滑行为和摩擦噪声行为之间的映射关系，揭示摩擦噪声的产生机理，确定产生摩擦噪声的关键影响因素；最后，获得通过调控水润滑橡胶尾轴承的粘-滑行为达到减小或避免产生摩擦噪声的方法措施，为提升水下航行器的静音水平、提高其隐蔽性能和生存能力提供参考依据。

Water-lubricated rubber stern tube bearings are the important supporting parts of the propulsion system of underwater vehicle (e.g. submarine). Its frictional noise, which generates under the low velocity or heavy load conditions, severely threats the survivability and concealment performance of the underwater vehicles. Stick-slip phenomenon, which generates on the wear surfaces of rubber stern tube bearings, is the main reason to generate frictional vibration and radiate noise. This study is aimed at investigating the stick-slip and frictional noise behaviours of the water-lubricated rubber stern tube bearing. Firstly, an integrated experiment platform is designed and developed to examine the stick-slip and frictional noise behaviours of the stern tube bearing rubber material online. Secondly, the simulation experiments are conducted to research the adhesion friction force and deformation behaviours of stern tube bearing rubber material during the wear process, and reveals the stick-slip mechanism. Meanwhile, the frictional vibration and noise signals are collected online, and combine with the fluid-solid coupling numerical simulation of the water-lubricated rubber stern tube bearing, the key characteristics of the frictional vibration and noise can be found. Thirdly, the mapping relations between the frictional noise and stick-slip behaviours are investigated to reveal the generation mechanism of frictional noise, and gain its key factors. Finally, we can obtain the methods of decreasing or avoiding the frictional noise of water-lubricated rubber stern tube bearing using reducing its stick-slip behaviours for increasing the mute level, survivability and concealment performance of the underwater vehicles.