哈尔滨工程大学学报2024，Vol.45Issue(6)：1058-1065,8.DOI:10.11990/jheu.202201013
粗糙度和轴向运动对艉轴承混合润滑性能的影响
Influence of roughness and axial movement on the mixed lubrication performance of stern bearing
摘要
Abstract
To solve the key problem of the abnormal wear state of a stern bearing when the hull of a large ship is deformed during navigation,this paper explores the influence of wear surface roughness changes and axial move-ments on the hybrid lubrication performance of the stern bearing.A mixed lubrication model coupling the bearing's axial movement and surface roughness is established,the distribution of bearing lubrication characteristics is ob-tained through numerical simulations,and the influence of axial movement and roughness on the mixed lubrication characteristics of the bearing is analyzed to validate the lubrication model.The calculation results show that the oil film thickness decreases nonlinearly along the axial direction under the coupling effect of axial movement and jour-nal misalignment.The oil film and contact pressures exhibit local peaks,and the bearing bush appears to have large local deformation.The increase in axial speed will enhance the hydrodynamic lubrication effect on the bear-ing,and the increase in the misalignment angle enables the axial movement to strongly influence lubrication charac-teristics.The greater the roughness,the stronger the load-carrying capacity and the more serious the contact situa-tion,which will accelerate the local wear of the bearing.关键词
船舶艉轴承/混合润滑/轴向运动/粗糙度/局部接触/轴颈倾斜/润滑性能/数值模型Key words
ship stern bearing/mixed lubrication/axial movement/roughness/local contact/journal misalign-ment/lubrication performance/numerical model分类
交通工程引用本文复制引用
杨琨,张涛,韩冰..粗糙度和轴向运动对艉轴承混合润滑性能的影响[J].哈尔滨工程大学学报,2024,45(6):1058-1065,8.基金项目
国家自然科学基金项目(52071241) （52071241）
船舶运输控制系统国家工程研究中心开放课题. （）
