Uncertainty reaction force model of ship stern bearing based on random theory and improved transition matrix method

IF 0.7 Q4 ENGINEERING, OCEAN

Ocean Systems Engineering-An International Journal Pub Date : 2016-06-25 DOI:10.12989/OSE.2016.6.2.191

Sheng Zhang, Z. Liu

引用次数: 0

Abstract

Stern bearing is a key component of marine propulsion plant. Its environment is diverse, working condition changeable, and condition severe, so that stern bearing load is of strong time variability, which directly affects the safety and reliability of the system and the normal navigation of ships. In this paper, three affecting factors of the stern bearing load such as hull deformation, propeller hydrodynamic vertical force and bearing wear are calculated and characterized by random theory. The uncertainty mathematical model of stern bearing load is established to research the relationships between factors and uncertainty load of stern bearing. The validity of calculation mathematical model and results is verified by examples and experiment yet. Therefore, the research on the uncertainty load of stern bearing has important theoretical significance and engineering practical value.

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基于随机理论和改进过渡矩阵法的舰船艉轴承不确定性反力模型

尾轴轴承是舰船推进装置的关键部件。其环境多样，工况多变，工况严峻，使艉轴承载荷具有较强的时变性，直接影响到系统的安全可靠性和船舶的正常航行。本文采用随机理论对影响尾轴承载的三个因素船体变形、螺旋桨水动力垂直力和轴承磨损进行了计算和表征。建立了船艉承载不确定性数学模型，研究了影响船艉承载不确定性的因素之间的关系。通过算例和实验验证了计算数学模型和结果的有效性。因此，对艉轴承不确定载荷的研究具有重要的理论意义和工程实用价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ocean Systems Engineering-An International Journal ENGINEERING, OCEAN-

自引率

22.20%

发文量

期刊介绍： The OCEAN SYSTEMS ENGINEERING focuses on the new research and development efforts to advance the understanding of sciences and technologies in ocean systems engineering. The main subject of the journal is the multi-disciplinary engineering of ocean systems. Areas covered by the journal include; * Undersea technologies: AUVs, submersible robot, manned/unmanned submersibles, remotely operated underwater vehicle, sensors, instrumentation, measurement, and ocean observing systems; * Ocean systems technologies: ocean structures and structural systems, design and production, ocean process and plant, fatigue, fracture, reliability and risk analysis, dynamics of ocean structure system, probabilistic dynamics analysis, fluid-structure interaction, ship motion and mooring system, and port engineering; * Ocean hydrodynamics and ocean renewable energy, wave mechanics, buoyancy and stability, sloshing, slamming, and seakeeping; * Multi-physics based engineering analysis, design and testing: underwater explosions and their effects on ocean vehicle systems, equipments, and surface ships, survivability and vulnerability, shock, impact and vibration; * Modeling and simulations; * Underwater acoustics technologies.