考虑轴承安装误差的船舶尾轴轴承润滑特性研究

IF 3.1 3区 工程技术 Q2 ENGINEERING, MECHANICAL Lubricants Pub Date : 2023-11-06 DOI:10.3390/lubricants11110478
Taiwei Yang, Hanhua Zhu, Shidong Fan, Jie Wu, Junlang Yuan, Liangyan Zheng
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引用次数: 0

摘要

推进轴系统的安装质量直接影响轴承的润滑状态。轴系安装的质量不仅关系到船舶建造的进度,而且关系到轴系的安全性、稳定性和可靠性。本文以船舶轴系滑动轴承为研究对象,建立了考虑安装误差的滑动轴承流体动力润滑模型,解决了船舶尾轴轴承安装误差问题。采用有限差分法和超松弛迭代法求解,探讨了轴承安装误差对轴承润滑特性参数的影响。尾轴轴承的安装误差会导致尾轴轴承两端的膜压力在轴向上增加,导致轴承的润滑状态下降。尾轴轴承的两端容易发生润滑不良和磨损故障。随着尾轴轴承安装误差的增大,尾轴轴承最小油膜厚度减小,最大油膜压力增大,并且随着安装误差的增大,尾轴尾部轴承对垂直安装误差的敏感性大于侧向安装误差,尾轴前部轴承对侧向安装误差的敏感性大于垂直安装误差。艉后轴承和艉前轴承两端的横向和垂直膜力的敏感性大于中间部分;轴承的安装误差对轴承的润滑特性有重大影响。
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Research on Lubrication Characteristics of Ship Stern Bearings Considering Bearing Installation Errors
The installation quality of a propulsion shaft system directly affects the lubrication statuses of the bearings. The quality of the shaft system installation not only affects the progress of ship construction, but also the safety, stability, and reliability of the shaft system. This article takes sliding bearings in ship shafting as the research object and establishes a hydrodynamic lubrication model of sliding bearings while considering installation errors to address the issue of installation errors of ship stern bearings. The finite difference method and super-relaxation iteration method are used to solve the problem, and the influences of bearing installation errors on bearing lubrication characteristic parameters are explored. An installation error of the stern bearing can lead to an increase in the film pressure at both ends of the stern bearing in the axial direction, leading to a decrease in the lubrication status of the bearing. Poor lubrication and wear faults of the stern bearing are prone to occur at both ends of the stern bearing. As the installation error of the stern bearing increases, the minimum film thickness of the stern bearing decreases and the maximum film pressure increases, and as the installation error increases, the sensitivity of the aft stern bearing to the vertical installation error is greater than that of the lateral installation error, and the sensitivity of the fore stern bearing to the lateral installation error is greater than that of the vertical installation error. The sensitivity of the lateral and vertical film forces at both ends of the aft stern bearing and the fore stern bearing is greater than that of the middle part; the installation error of bearings has a significant impact on the lubrication characteristics of bearings.
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来源期刊
Lubricants
Lubricants Engineering-Mechanical Engineering
CiteScore
3.60
自引率
25.70%
发文量
293
审稿时长
11 weeks
期刊介绍: This journal is dedicated to the field of Tribology and closely related disciplines. This includes the fundamentals of the following topics: -Lubrication, comprising hydrostatics, hydrodynamics, elastohydrodynamics, mixed and boundary regimes of lubrication -Friction, comprising viscous shear, Newtonian and non-Newtonian traction, boundary friction -Wear, including adhesion, abrasion, tribo-corrosion, scuffing and scoring -Cavitation and erosion -Sub-surface stressing, fatigue spalling, pitting, micro-pitting -Contact Mechanics: elasticity, elasto-plasticity, adhesion, viscoelasticity, poroelasticity, coatings and solid lubricants, layered bonded and unbonded solids -Surface Science: topography, tribo-film formation, lubricant–surface combination, surface texturing, micro-hydrodynamics, micro-elastohydrodynamics -Rheology: Newtonian, non-Newtonian fluids, dilatants, pseudo-plastics, thixotropy, shear thinning -Physical chemistry of lubricants, boundary active species, adsorption, bonding
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