船舶艉轴承动态工况润滑特性分析  

Analysis of Lubrication Characteristics of Ship Stern Bearing under Dynamic Conditions

作　　者：张天勇[1] 朱汉华[1] 范世东[1] 

机构地区：[1]武汉理工大学能源与动力工程学院,武汉430063

出　　处：《船舶工程》2010年第1期29-32,68,共5页Ship Engineering

基　　金：国家自然科学基金面上项目(50675162);湖北省自然科学基金重点项目(2008CDA027);高等学校学科创新引智计划项目(B08031)共同资助

摘　　要：将平均流量Reynolds方程与G-T接触理论相结合,建立了船舶在动态工况下综合考虑轴系艉轴承的载荷、转速变化及表面粗糙度影响的混合润滑与接触问题的数学模型.通过编写相应的数值求解程序,分析了启动和变工况运行两个动态过程对艉轴承的润滑油膜压力、油膜厚度及表面粗糙峰承载量等润滑参数的影响.该方法能够准确而快捷地对各种船舶艉轴承的润滑性能做出预测和评估,从而对艉轴承的设计与失效分析提供一种有效的途径.A mixed lubrication and contact problem model for predicting the performance of the ship stern bearing under dynamic conditions with provision for load, speed and surface roughness is established by combining the flow Reynolds equation and the G-T contact theory. By programming the corresponding numerical procedures, this paper has analyzed lubrication parameters such as film pressure, film thickness, surface roughness peak load and so on under start-up and unstable conditions. This method is capable accurately and quickly to lubrication performance prediction and evaluation for various kinds of ship stern journal bearings. So it provides the design and failure analysis with an effective approach.

关 键 词：船舶艉轴承 动态工况 润滑 表面粗糙度 

分 类 号：U664.21[交通运输工程—船舶及航道工程]